HMC1010LP4E - Hittite Microwave Corporation

For price, delivery and to place orders: Hittite Microwave Corporation, 20 Alpha Road, Chelmsford, MA 01824

Phone: 978-250-3343 Fax: 978-250-3373 Order On-line at www.hittite.com

Application Support: Phone: 978-250-3343 or apps@hittite.com

POWER DETECTORS - SMT

11 - 1

HMC1010LP4E

General Description

Features

Functional Diagram

The HMC1010LP4E Power Detector is designed for

RF power measurement, and control applications

for frequencies up to 3.9 GHz. The detector provides

an accurate RMS representation of any RF/IF input

signal. The output is a temperature compensated

monotonic, representation of real signal power, mea-

sured with an input sensing range of 60 dB.

The HMC1010LP4E is ideally suited to those wide

bandwidth, wide dynamic range applications, requir-

ing repeatable measurement of real signal power,

especially where RF/IF wave shape and/or crest factor

change with time.

The integration bandwidth of the HMC1010LP4E is

digitally programmable with the use of input pins SCI1-

4 with a range of more than 4 decades. This allows

the user to dynamically set the operation bandwidth

providing the capability of handling different types of

modulations on the same platform.

The HMC1010LP4E features an internal OP-AMP at

output stage, which provides for slope & intercept ad-

justments and enables controller application.

±1 dB Detection Accuracy to 3.9 GHz

Input Dynamic Range: -50 dBm to +10 dBm

RF Signal Wave shape & Crest Factor Independent

Digitally Programmable Integration Bandwidth

+5V Operation from -40°C to +85°C

Excellent Temperature Stability

Power-Down Mode

24 Lead 4x4mm SMT Package: 16mm

Typical Applications

The HMC1010LP4E is ideal for:

• Log –> Root-Mean-Square (RMS) Conversion

• Received Signal Strength Indication (RSSI)

• Transmitter Signal Strength Indication (TSSI)

• RF Power Amplier Efficiency Control

• Receiver Automatic Gain Control

• Transmitter Power Control

RMS POWER DETECTOR

DC - 3.9 GHz

v03.0511

Electrical Specications, TA = +25 °C, Vcc = 5V

Parameter Typ. Typ. Typ. Typ. Typ. Typ. Typ. Units

Dynamic Range (±1dB Error) [2]

Input Frequency 100 900 1900 2200 2700 3500 3900 MHz

Differential Input Conguration [1] 59 64 62 62 59 49 45 dB

Deviation vs Temperature: (Over full temperature range -40 °C to 85 °C).

Deviation is measured from reference, which is the same WCDMA input at 25 °C.

[1] Differential Input Interface with 1:1 Balun Transformer (over full input frequency range) 1dB

[2] With WCDMA 4 Carrier (TM1-64 DPCH)

For price, delivery and to place orders: Hittite Microwave Corporation, 20 Alpha Road, Chelmsford, MA 01824

Phone: 978-250-3343 Fax: 978-250-3373 Order On-line at www.hittite.com

Application Support: Phone: 978-250-3343 or apps@hittite.com

POWER DETECTORS - SMT

11 - 2

Electrical Specications II,

TA = +25 °C, Vcc = 5V, Sci4 = Sci1 = 0V, Sci3 = Sci2 = 5V, Unless Otherwise Noted

HMC1010LP4E

v03.0511

RMS POWER DETECTOR

DC - 3.9 GHz

-4

-3

-2

-1

-60 -50 -40 -30 -20 -10 0 10

CDMA2000 4 carriers

LTE DOWN

WCDMA 4 carriers

WCDMA single carrier

ERROR (dB)

INPUT POWER (dBm)

RMSOUT vs. Pin with Different

Modulations @ 1900 MHz [1]

RMSOUT Error vs. Pin with Different

Modulations @ 1900 MHz [1]

0.5

1.5

2.5

3.5

-60 -50 -40 -30 -20 -10 0 10

Ideal

CDMA2000 4 carriers

LTE DOWN

WCDMA 4 carriers

WCDMA single carrier

RMSOUT (V)

INPUT POWER (dBm)

[1] Data was taken at Sci4=Sci1=0V, Sci3=Sci2=5V, shortest integration time is for SCI=0000, allowed longest integration time is for SCI=1100

Parameter Typ. Typ. Typ. Typ. Typ. Typ. Typ. Units

Input Frequency 100 900 1900 2200 2700 3500 3900 MHz

Modulation Deviation (Output deviation from reference, which is measured with CW input at equivalent input signal power)

WCDMA 4 Carrier (TM1-64 DPCH) at +25 °C 0.1 0.1 0.1 0.1 0.1 0.2 0.2 dB

WCDMA 4 Carrier (TM1-64 DPCH) at +85 °C 0.1 0.1 0.1 0.1 0.1 0.1 0.2 dB

WCDMA 4 Carrier (TM1-64 DPCH) at -40 °C 0.1 0.1 0.1 0.1 0.1 0.1 0.2 dB

Logarithmic Slope and Intercept [1]

Logarithmic Slope 36.4 36.6 3 7. 3 3 7. 8 39 43.3 47.7 mV/dB

Logarithmic Intercept -70.1 - 69.1 - 6 7.6 -66.3 - 63.1 -55 -51 dBm

Max. Input Power at ±1dB Error 4 10 10 10 654dBm

Min. Input Power at ±1dB Error -55 -54 -52 -52 -49 -44 -41 dBm

[1] With WCDMA 4 Carrier (TM1-64 DPCH)

For price, delivery and to place orders: Hittite Microwave Corporation, 20 Alpha Road, Chelmsford, MA 01824

Phone: 978-250-3343 Fax: 978-250-3373 Order On-line at www.hittite.com

Application Support: Phone: 978-250-3343 or apps@hittite.com

POWER DETECTORS - SMT

11 - 3

Electrical Specications III,

TA = +25 °C, Vcc = 5V, Sci4 = Sci1 = 0V, Sci3 = Sci2 = 5V, Unless Otherwise Noted

Parameter Conditions Min Typ. Max Units

Differential Input Conguration

Input Network Return Loss up to 2.5 GHz [1] > 10 dB

Input Resistance between IN+ and IN- Between pins 3 and 4 150 

Input Voltage Range VDIFFIN = VIN+ - VIN- 1.6 V

RMSOUT Output

Output Voltage Range 0.4 to 2.9 V

Source/Sink Current Compliance RMSOUT held at VCC/2 8 / -0.524 mA

Output Slew Rate (rise / fall) Sci4=Sci3=Sci2=Sci1=0V, Cofs=1nF 17.92 / 1.41 106 V/s

VSET Input (Negative Feedback Terminal)

Input Voltage Range For control applications with nominal

slope/intercept settings 0.4 to 2.9 V

Input Resistance 5M

SCI1-4 Inputs, ENX Logic Input (Power Down Control)

Input High Voltage 0.7xVcc V

Input Low Voltage 0.3xVcc V

Input High Current 1A

Input Low Current 1A

Input Capacitance 0.5 pF

Power Supply

Supply Voltage 4.5 55.5 V

Supply Current with no input power 40 mA typical at -40 °C,

54.5 mA typical at 85 °C 47. 5 mA

Supply Current with Pin = 0 dBm 42 mA typical at -40 °C,

57 mA typical at 85 °C 50 mA

Standby Mode Supply Current 5 mA

[1] Performance of differential input conguration is limited by the balun. Baluns used is M/A-COM ETC1-1-13 specied over 4.5 to 3000 MHz

HMC1010LP4E

v03.0511

RMS POWER DETECTOR

DC - 3.9 GHz

For price, delivery and to place orders: Hittite Microwave Corporation, 20 Alpha Road, Chelmsford, MA 01824

Phone: 978-250-3343 Fax: 978-250-3373 Order On-line at www.hittite.com

Application Support: Phone: 978-250-3343 or apps@hittite.com

POWER DETECTORS - SMT

11 - 4

RMSOUT & Error vs. Pin @ 100 MHz [1][2]

0.4

0.8

1.2

1.6

2.4

2.8

3.2

-4

-3

-2

-1

-60 -50 -40 -30 -20 -10 0 10

ERR +25 C

ERR +85 C

ERR -40 C

Ideal

LOGOUT +25 C

LOGOUT +85 C

LOGOUT -40 C

RMSOUT (V)

ERROR (dB)

INPUT POWER (dBm)

RMSOUT & Error vs. Pin @ 1900 MHz [1][2]

0.4

0.8

1.2

1.6

2.4

2.8

3.2

-4

-3

-2

-1

-60 -50 -40 -30 -20 -10 0 10

ERR +25 C

ERR +85 C

ERR -40 C

Ideal

LOGOUT +25 C

LOGOUT +85 C

LOGOUT -40 C

RMSOUT (V)

ERROR (dB)

INPUT POWER (dBm)

RMSOUT & Error vs. Pin @ 900 MHz [1][2]

RMSOUT & Error vs. Pin @ 2200 MHz [1][2]

0.4

0.8

1.2

1.6

2.4

2.8

3.2

-4

-3

-2

-1

-60 -50 -40 -30 -20 -10 0 10

ERR +25 C

ERR +85 C

ERR -40 C

Ideal

LOGOUT +25 C

LOGOUT +85 C

LOGOUT -40 C

RMSOUT (V)

ERROR (dB)

INPUT POWER (dBm)

0.4

0.8

1.2

1.6

2.4

2.8

3.2

-4

-3

-2

-1

-60 -50 -40 -30 -20 -10 0 10

ERR +25 C

ERR +85 C

ERR -40 C

Ideal

LOGOUT +25 C

LOGOUT +85 C

LOGOUT -40 C

RMSOUT (V)

ERROR (dB)

INPUT POWER (dBm)

RMSOUT & Error vs. Pin @ 2700 MHz [1][2]

0.4

0.8

1.2

1.6

2.4

2.8

3.2

-4

-3

-2

-1

-60 -50 -40 -30 -20 -10 0 10

ERR +25 C

ERR +85 C

ERR -40 C

Ideal

LOGOUT +25 C

LOGOUT +85 C

LOGOUT -40 C

RMSOUT (V)

ERROR (dB)

INPUT POWER (dBm)

RMSOUT & Error vs. Pin @ 3500 MHz [1][2]

0.4

0.8

1.2

1.6

2.4

2.8

3.2

-4

-3

-2

-1

-60 -50 -40 -30 -20 -10 0 10

ERR +25 C

ERR +85 C

ERR -40 C

Ideal

LOGOUT +25 C

LOGOUT +85 C

LOGOUT -40 C

RMSOUT (V)

ERROR (dB)

INPUT POWER (dBm)

[1] Data was taken at Sci4=Sci1=0V, Sci3=Sci2=5V, shortest integration time is for SCI=0000, allowed longest integration time is for SCI=1100

[2] WCDMA 4 carriers input waveform

HMC1010LP4E

v03.0511

RMS POWER DETECTOR

DC - 3.9 GHz

For price, delivery and to place orders: Hittite Microwave Corporation, 20 Alpha Road, Chelmsford, MA 01824

Phone: 978-250-3343 Fax: 978-250-3373 Order On-line at www.hittite.com

Application Support: Phone: 978-250-3343 or apps@hittite.com

POWER DETECTORS - SMT

11 - 5

RMSOUT & Error vs. Pin @ 3900 MHz [1][2] Intercept vs. Frequency [1][2]

Slope vs. Frequency [1][2]

0.4

0.8

1.2

1.6

2.4

2.8

3.2

-4

-3

-2

-1

-60 -50 -40 -30 -20 -10 0 10

ERR +25 C

ERR +85 C

ERR -40 C

Ideal

LOGOUT +25 C

LOGOUT +85 C

LOGOUT -40 C

RMSOUT (V)

ERROR (dB)

INPUT POWER (dBm)

-80

-75

-70

-65

-60

-55

-50

-45

-40

0 500 1000 1500 2000 2500 3000 3500 4000

+25C

+85C

-40C

FREQUENCY (MHz)

INTERCEPT (dBm)

0 500 1000 1500 2000 2500 3000 3500 4000

+25C

+85C

-40C

FREQUENCY (MHz)

SLOPE (mV/dB)

[1] Data was taken at Sci4=Sci1=0V, Sci3=Sci2=5V, shortest integration time is for SCI=0000, allowed longest integration time is for SCI=1100

[2] WCDMA 4 carriers input waveform

-4

-3

-2

-1

-60 -50 -40 -30 -20 -10 0 10

100 MHz

900 MHz

1900 MHz

2200 MHz

2700 MHz

3500 MHz

3900 MHz

INPUT POWER (dBm)

ERROR (dB)

RMSOUT vs. Pin with WCDMA

4 Carrier @ +25 °C [1]

RMSOUT Error vs. Pin with WCDMA 4

Carrier @ +25 °C [1]

0.5

1.5

2.5

-70 -60 -50 -40 -30 -20 -10 0 10

100 MHz

900 MHz

1900 MHz

2200 MHz

2700 MHz

3500 MHz

3900 MHz

INPUT POWER (dBm)

RMSOUT (V)

-4

-3

-2

-1

-70 -60 -50 -40 -30 -20 -10 0 10

100 MHz

900 MHz

1900 MHz

2200 MHz

2700 MHz

3500 MHz

3900 MHz

INPUT POWER (dBm)

ERROR (dB)

RMSOUT Error vs. Pin with WCDMA 4

Carrier @ +85 °C wrt +25 °C Response [1]

HMC1010LP4E

v03.0511

RMS POWER DETECTOR

DC - 3.9 GHz

For price, delivery and to place orders: Hittite Microwave Corporation, 20 Alpha Road, Chelmsford, MA 01824

Phone: 978-250-3343 Fax: 978-250-3373 Order On-line at www.hittite.com

Application Support: Phone: 978-250-3343 or apps@hittite.com

POWER DETECTORS - SMT

11 - 6

-4

-3

-2

-1

-70 -60 -50 -40 -30 -20 -10 0 10

100 MHz

900 MHz

1900 MHz

2200 MHz

2700 MHz

3500 MHz

3900 MHz

INPUT POWER (dBm)

ERROR (dB)

RMSOUT Error vs. Pin with WCDMA 4

Carrier @ -40 °C wrt +25 °C Response [1]

[1] Data was taken at Sci4=Sci1=0V, Sci3=Sci2=5V, shortest integration time is for SCI=0000, allowed longest integration time is for SCI=1100

RMSOUT vs. Pin with CW @ +25 °C [1]

RMSOUT Error vs. Pin with CW @ +25 °C [1]

0.5

1.5

2.5

-70 -60 -50 -40 -30 -20 -10 0 10

100 MHz

900 MHz

1900 MHz

2200 MHz

2700 MHz

3500 MHz

3900 MHz

INPUT POWER (dBm)

RMSOUT (V)

-4

-3

-2

-1

-60 -50 -40 -30 -20 -10 0 10

100 MHz

900 MHz

1900 MHz

2200 MHz

2700 MHz

3500 MHz

3900 MHz

INPUT POWER (dBm)

ERROR (dB)

Reading Error for WCDMA 4 Carrier wrt

CW Response @ +25 °C [1]

RMSOUT vs. Pin w/ CW & WCDMA 4 Carrier

(TM1-64 DPCH) @ 1900 MHz & +25 °C [1]

-1

-0.8

-0.6

-0.4

-0.2

0.2

0.4

0.6

0.8

-70 -60 -50 -40 -30 -20 -10 0 10

100 MHz

900 MHz

1900 MHz

2200 MHz

2700 MHz

3500 MHz

3900 MHz

INPUT POWER (dBm)

ERROR (dB)

0.5

1.5

2.5

-70 -60 -50 -40 -30 -20 -10 0 10

WCDMA

INPUT POWER (dBm)

RMSOUT (V)

RMSOUT vs. Pin w/ CW & WCDMA 4 Carrier

(TM1-64 DPCH) @ 1900 MHz & +85 °C [1]

0.5

1.5

2.5

-70 -60 -50 -40 -30 -20 -10 0 10

WCDMA

INPUT POWER (dBm)

RMSOUT (V)

HMC1010LP4E

v03.0511

RMS POWER DETECTOR

DC - 3.9 GHz

For price, delivery and to place orders: Hittite Microwave Corporation, 20 Alpha Road, Chelmsford, MA 01824

Phone: 978-250-3343 Fax: 978-250-3373 Order On-line at www.hittite.com

Application Support: Phone: 978-250-3343 or apps@hittite.com

POWER DETECTORS - SMT

11 - 7

[1] Data was taken at Sci4=Sci1=0V, Sci3=Sci2=5V, shortest integration time is for SCI=0000, allowed longest integration time is for SCI=1100

-1

-0.8

-0.6

-0.4

-0.2

0.2

0.4

0.6

0.8

-70 -60 -50 -40 -30 -20 -10 0 10

100 MHz

900 MHz

1900 MHz

2200 MHz

2700 MHz

3500 MHz

3900 MHz

INPUT POWER (dBm)

ERROR (dB)

Reading Error for WCDMA 4 Carrier wrt

CW Response @ +85 °C [1]

0.5

1.5

2.5

-70 -60 -50 -40 -30 -20 -10 0 10

WCDMA

INPUT POWER (dBm)

RMSOUT (V)

-1

-0.8

-0.6

-0.4

-0.2

0.2

0.4

0.6

0.8

-70 -60 -50 -40 -30 -20 -10 0 10

100 MHz

900 MHz

1900 MHz

2200 MHz

2700 MHz

3500 MHz

3900 MHz

INPUT POWER (dBm)

ERROR (dB)

RMSOUT vs. Pin w/ CW & WCDMA 4 Carrier

(TM1-64 DPCH) @ 1900 MHz & -40 °C [1]

Reading Error for WCDMA 4 Carrier wrt

CW Response @ -40 °C [1]

Output Response

with SCI = 0000 @ 1900 MHz

0.5

1.5

2.5

-5

-2 0 2 4 6 8 10 12 14 16 18

-20 dBm

0 dBm

RMSOUT (V)

RF ENABLE VOLTAGE (V)

TIME (μs)

RMSOUT

RF ENABLE

OFF

Typical Supply Current vs. Pin, Vcc = 5V

-70 -60 -50 -40 -30 -20 -10 0 10

+25 C

+85 C

-40 C

INPUT POWER (dBm)

SUPPLY CURRENT (mA)

HMC1010LP4E

v03.0511

RMS POWER DETECTOR

DC - 3.9 GHz

For price, delivery and to place orders: Hittite Microwave Corporation, 20 Alpha Road, Chelmsford, MA 01824

Phone: 978-250-3343 Fax: 978-250-3373 Order On-line at www.hittite.com

Application Support: Phone: 978-250-3343 or apps@hittite.com

POWER DETECTORS - SMT

11 - 8

Output Ripple & Rise/Fall Time

vs. Integration Setting

[Sci4,Sci3,Sci2,Sci1] in Decimal

300

600

900

1200

1500

1800

0.1

100

1000

10000

100000

0123456789101112

Rise Time

Fall Time

Ripple with WCDMA4TM

Ripple with WCDMA1TM

Ripple with 8 Tone (1kHz seperation)

Ripple with 8 Tone (10kHz seperation)

Output Ripple Peak-Peak (mV)

Rise Time & Fall Time (us)

Integration Setting (in Decimal)

Input Return Loss vs. Frequency

-35

-30

-25

-20

-15

-10

-5

0123456

FREQUENCY (GHz)

RETURN LOSS (dB)

Defined in large part by balun:

M/A-Com balun #ETC1-1-113;

4.5 MHz to 3000 MHz

HMC1010LP4E

v03.0511

RMS POWER DETECTOR

DC - 3.9 GHz

For price, delivery and to place orders: Hittite Microwave Corporation, 20 Alpha Road, Chelmsford, MA 01824

Phone: 978-250-3343 Fax: 978-250-3373 Order On-line at www.hittite.com

Application Support: Phone: 978-250-3343 or apps@hittite.com

POWER DETECTORS - SMT

11 - 9

Outline Drawing

NOTES:

1. LEADFRAME MATERIAL: COPPER ALLOY

2. DIMENSIONS ARE IN INCHES [MILLIMETERS].

3. LEAD SPACING TOLERANCE IS NON-CUMULATIVE

4. PAD BURR LENGTH SHALL BE 0.15mm MAXIMUM.

PAD BURR HEIGHT SHALL BE 0.05mm MAXIMUM.

5. PACKAGE WARP SHALL NOT EXCEED 0.05mm.

6. ALL GROUND LEADS AND GROUND PADDLE MUST

BE SOLDERED TO PCB RF GROUND.

7. REFER TO HMC APPLICATION NOTE FOR SUGGESTED PCB LAND PATTERN.

Package Information

Absolute Maximum Ratings

Supply Voltage (Vcc) 5.6V

RF Input Power 16 dBm

Differential Input Voltage 1.6 Vp-p

Channel / Junction Temperature 125 °C

Continuous Pdiss (T = 85°C)

(Derate 34.87 mW/°C above 85°C) 1.39 W

Thermal Resistance (Rth)

(junction to ground paddle) 28.68 °C/W

Storage Temperature -65 to +150 °C

Operating Temperature -40 to +85 °C

ESD Sensitivity (HBM) Class 1B

ELECTROSTATIC SENSITIVE DEVICE

OBSERVE HANDLING PRECAUTIONS

Part Number Package Body Material Lead Finish MSL Rating Package Marking [1]

HMC1010LP4E RoHS-compliant Low Stress Injection Molded Plastic 100% matte Sn MSL1 [2] H1010

XXXX

[1] 4-Digit lot number XXXX

[2] Max peak reow temperature of 260 °C

HMC1010LP4E

v03.0511

RMS POWER DETECTOR

DC - 3.9 GHz

For price, delivery and to place orders: Hittite Microwave Corporation, 20 Alpha Road, Chelmsford, MA 01824

Phone: 978-250-3343 Fax: 978-250-3373 Order On-line at www.hittite.com

Application Support: Phone: 978-250-3343 or apps@hittite.com

POWER DETECTORS - SMT

11 - 10

Pin Number Function Description Interface Schematic

1, 16, 21, 23 Vcc Power Supply. Connect supply voltage to these

pins with appropriate ltering.

2, 5, 6, 8,

11 - 13, 22, 24

Package Base

GND Package bottom has an exposed metal paddle that

must be connected to RF/DC ground.

3, 4 IN+, IN- RF input pins. Connect RF to

IN+ and IN- through a 1:1 balun

7ENX

Disable pin. Connect to GND for normal operation.

Applying voltage V>0.8xVcc will initiate power

saving mode

Pin Descriptions

HMC1010LP4E

v03.0511

RMS POWER DETECTOR

DC - 3.9 GHz

For price, delivery and to place orders: Hittite Microwave Corporation, 20 Alpha Road, Chelmsford, MA 01824

Phone: 978-250-3343 Fax: 978-250-3373 Order On-line at www.hittite.com

Application Support: Phone: 978-250-3343 or apps@hittite.com

POWER DETECTORS - SMT

11 - 11

Pin Descriptions (Continued)

Pin Number Function Description Interface Schematic

9, 10 COFSA,

COFSB

High pass lter capacitor input. Connect a

capacitor between COFSA and COFSB to

determine 3 dB point of input signal high-pass lter.

14 VSET Setpoint input for controller mode. Allows change

of output slope resulting in output power leveling.

15 RMSOUT Logarithmic output that provides an

indication of mean square input power.

17 - 20 SCI1 - SCI4

Digitally Programmable Integration Bandwidth

Control. Input pins that control the internal

integration time constant for RMS calculation. SCI4

is the most signicant bit. Set V>0.8xVcc to enable

and V<0.2xVcc to disable (active high). Shortest

integration time is for SCI=0000, allowed longest

integration time is for SCI=1100 (1101, 1110 and

1111 SCI settings are forbidden states). Each step

changes the integration time by 1 octave.

HMC1010LP4E

v03.0511

RMS POWER DETECTOR

DC - 3.9 GHz

For price, delivery and to place orders: Hittite Microwave Corporation, 20 Alpha Road, Chelmsford, MA 01824

Phone: 978-250-3343 Fax: 978-250-3373 Order On-line at www.hittite.com

Application Support: Phone: 978-250-3343 or apps@hittite.com

POWER DETECTORS - SMT

11 - 12

Application Circuit - Differential Conguration

HMC1010LP4E

v03.0511

RMS POWER DETECTOR

DC - 3.9 GHz

For price, delivery and to place orders: Hittite Microwave Corporation, 20 Alpha Road, Chelmsford, MA 01824

Phone: 978-250-3343 Fax: 978-250-3373 Order On-line at www.hittite.com

Application Support: Phone: 978-250-3343 or apps@hittite.com

POWER DETECTORS - SMT

11 - 13

Evaluation PCB - Differential Conguration

The circuit board used in the application should

use RF circuit design techniques. Signal lines sho-

uld have 50 Ohm impedance while the package

ground leads and exposed paddle should be con-

nected directly to the ground plane similar to that

shown. A sufficient number of via holes should be

used to connect the top and bottom ground planes.

The evaluation circuit board shown is available from

Hittite upon request.

List of Materials for Evaluation PCB 128694 [1]

Item Description

J1, J2 PC Mount SMA Connector

TP1 - TP9 DC Pin

C1, C10, C16 100 pF Capacitor, 0402 Pkg.

C3, C4, C6 1000 pF Capacitor, 0402 Pkg.

C2, C5, C11, C17 100 nF Capacitor, 0402 Pkg.

R1 68 Ohm Resistor, 0402 Pkg.

R2, R12 - R15 10 k Resistor, 0402 Pkg.

R3, R9, R10 0 Ohm Resistor, 0402 Pkg.

R6, R7 4.7 k Resistor, 0402 Pkg.

T1 1:1 Balun, M/A-COM ETC1-1-13

U1 HMC1010LP4E

RMS Power Detector

PCB [2] 128691 Evaluation PCB

[1] Reference this number when ordering complete evaluation PCB

[2] Circuit Board Material: Rogers 4350

HMC1010LP4E

v03.0511

RMS POWER DETECTOR

DC - 3.9 GHz

For price, delivery and to place orders: Hittite Microwave Corporation, 20 Alpha Road, Chelmsford, MA 01824

Phone: 978-250-3343 Fax: 978-250-3373 Order On-line at www.hittite.com

Application Support: Phone: 978-250-3343 or apps@hittite.com

POWER DETECTORS - SMT

11 - 14

Application Circuit - Single-Ended Conguration, 900 MHz Tune

Note: For the values of C3, C4, R4, R10, R11, L1, refer to Single-Ended Input Interface in Application Information

HMC1010LP4E

v03.0511

RMS POWER DETECTOR

DC - 3.9 GHz

For price, delivery and to place orders: Hittite Microwave Corporation, 20 Alpha Road, Chelmsford, MA 01824

Phone: 978-250-3343 Fax: 978-250-3373 Order On-line at www.hittite.com

Application Support: Phone: 978-250-3343 or apps@hittite.com

POWER DETECTORS - SMT

11 - 15

Evaluation PCB - Single-Ended Conguration, 900 MHz Tune

The circuit board used in the application should

use RF circuit design techniques. Signal lines sho-

uld have 50 Ohm impedance while the package

ground leads and exposed paddle should be con-

nected directly to the ground plane similar to that

shown. A sufficient number of via holes should be

used to connect the top and bottom ground planes.

The evaluation circuit board shown is available from

Hittite upon request.

Board is congured with single-ended interface

suitable for input signal frequencies at 900 MHz.

Refer to section on tuning single-ended interface in

application information for operating with signals at

other frequencies.

List of Materials for Evaluation PCB 130436 [1]

Item Description

J1, J2 SMA Connector

TP1 - TP9 DC Pin

C1, C3, C10, C16 100 pF Capacitor, 0402 Pkg.

C2, C5, C11, C17 100 nF Capacitor, 0402 Pkg.

C4 5.6 pF Capacitor, 0402 Pkg.

C6 1000 pF Capacitor, 0402 Pkg.

R2, R12 - R15 10 k Resistor, 0402 Pkg.

R3, R5, R9, R10 0 Ohm Resistor, 0402 Pkg.

R4 27 Ohm Resistor, 0402 Pkg.

R6, R7 4.7 k Resistor, 0402 Pkg.

R11 82 Ohm Resistor, 0402 Pkg.

L1 6.8 nH Inductor, 0402 Pkg.

U1 HMC1010LP4E

RMS Power Detector

PCB [3] 128683 Evaluation PCB

[1] Reference this number when ordering complete evaluation PCB

[2] Circuit Board Material: Rogers 4350

HMC1010LP4E

v03.0511

RMS POWER DETECTOR

DC - 3.9 GHz

For price, delivery and to place orders: Hittite Microwave Corporation, 20 Alpha Road, Chelmsford, MA 01824

Phone: 978-250-3343 Fax: 978-250-3373 Order On-line at www.hittite.com

Application Support: Phone: 978-250-3343 or apps@hittite.com

POWER DETECTORS - SMT

11 - 16

Monolithic true-RMS detectors are in-effect analog calculators, calculating the RMS value of the input signal, unlike

other types of power detectors which are designed to respond to the RF signal envelope. At the core of an RMS

detector is a full-wave rectier, log/antilog circuit, and an integrator. The RMS output signal is directly proportional

to the logarithm of the time-average of VIN2. The bias block also contains temperature compensation circuits which

stabilize output accuracy over the entire operating temperature range. The DC offset cancellation circuit actively

cancels internal offsets so that even very small input signals can be measured accurately.

Conguration For The Typical Application

The RF input can be connected in differential conguration, or single-ended conguration: see “RF Input Interface”

section for details on input conguration.

The RMS output signal is typically connected to VSET, through a resistive network providing a Pin -> RMSOUT

transfer characteristic slope of 36.6mV/dBm ( at 900 MHz), however the RMS output can be re-scaled to “magnify”

a specic portion of the input sensing range, and to fully utilize the dynamic range of the RMS output. Refer to the

section under the “log-slope and intercept” heading for details.

Due to part-to-part variations in log-slope and log-intercept, a system-level calibration is recommended to satisfy

absolute accuracy requirements: refer to the “System Calibration” section for more details.

-65 -45 -25 -5 15

IDEAL

MEASURED

INPUT POWER (dBm)

RMSOUT (V)

RMSOUT vs. PIN

Application Information

Principle of Operation

PIN = RMSOUT / [log-slope] + [log-intercept], dBm

HMC1010LP4E

v03.0511

RMS POWER DETECTOR

DC - 3.9 GHz

For price, delivery and to place orders: Hittite Microwave Corporation, 20 Alpha Road, Chelmsford, MA 01824

Phone: 978-250-3343 Fax: 978-250-3373 Order On-line at www.hittite.com

Application Support: Phone: 978-250-3343 or apps@hittite.com

POWER DETECTORS - SMT

11 - 17

RF Input Interface

The IN+ and IN- pins are differential RF inputs, which can be externally congured with differential or single-ended

input. Power match components are placed at these input terminals, along with DC blocking capacitors. The coupling

capacitor values also set the lower spectral boundary of the input signal bandwidth.

Differential (Diff) Input Interface:

The value of R1 depends on the balun used; if the

balun is 50 on both sides of the SE-Diff conversion,

then

R1 = (150 * RM)/ (150 - RM) Ω, where

RM = the desired power match impedance in ohms

For RM = 50, R1 = 75 ≈ 68

Single-Ended (SE) Input Interface:

Tuned SE-interface for signal frequency = 900 MHz

Use R4 = 27, R11 = 82, C3 = 100 pF, L1=6.8nH, C4=5.6pF, R10 = 0. Refer to application circuit for single-ended

conguration on page 11-14.

[1] CW input waveform.

RMSOUT & Error vs. Pin Using

Tuned SE-Interface: 900 ± 100 MHz [1]

0.4

0.8

1.2

1.6

2.4

2.8

3.2

-4

-3

-2

-1

-60 -50 -40 -30 -20 -10 0 10

ERR 800MHz

ERR 900MHz

ERR 1000MHz

LOGOUT 800MHz

LOGOUT 900MHz

LOGOUT 1000MHz

RMSOUT (V)

ERROR (dB)

INPUT POWER (dBm)

HMC1010LP4E

v03.0511

RMS POWER DETECTOR

DC - 3.9 GHz

For price, delivery and to place orders: Hittite Microwave Corporation, 20 Alpha Road, Chelmsford, MA 01824

Phone: 978-250-3343 Fax: 978-250-3373 Order On-line at www.hittite.com

Application Support: Phone: 978-250-3343 or apps@hittite.com

POWER DETECTORS - SMT

11 - 18

[1] CW input waveform.

[2] Input signal is 1900 MHz CW-tone switched on and off

[3] Measured from RF switching edge to 1dB (input referred) settling of RMSOUT.

RMS Output Interface and Transient Response

The HMC1010LP4 features digital input pins (SCI1-SCI4) that control the internal integration time constant. Output

transient response is determined by the digital integration controls, and output load conditions.

Shortest integration time is for SCI=0000, allowed longest integration time is for SCI=1100 (1101, 1110 and 1111 SCI

settings are forbidden states).

Using larger values of SCI will narrow the operating bandwidth of the integrator, resulting in a longer averaging time-

interval and a more ltered output signal; however it will also slow the power detector’s transient response. A larger

SCI value favors output accuracy over speed. For the fastest possible transient settling times set SCI to 0000. This

conguration will operate the integrator at its widest possible bandwidth, resulting in short averaging time-interval

and an output signal with little ltering. Most applications will choose a SCI setting that maintains balance between

speed and accuracy. Furthermore, error performance over modulation bandwidth is dependent on the SCI setting.

For example modulations with relatively low frequency components and high crest factors may require higher SCI

(integration) settings.

Table 1: Transient Response vs. SCI Setting[2]:

RMSOUT Rise-Time 10% -> 90% (µs) RMSOUT Rise Settling Time (µs)[3] RMSOUT Fall-time 100% -> 10% (µs)

SCI4,3,2,1 Pin = 0

dBm

Pin = -20

dBm

Pin = -40

dBm

Pin = 0

dBm

Pin = -20

dBm

Pin = -40

dBm

Pin = 0

dBm

Pin = -20

dBm

Pin = -40

dBm

0000 0.062 0.038 0.034 0.504 0.546 0.422 1.73 1.73 1.79

0010 0.06 0.045 0.18 0.63 0.63 0.495 5.55 5.55 5.85

0100 0.08 0.06 1.6 2.8 2.65 2.5 22.4 22.3 23.6

0110 1.6 47.7 10.5 11 10 93.5 91 96

1000 717 31 40 45 45 378 372 386

1010 30 70 138 170 184 182 1510 1510 1590

1100 120 300 580 630 770 780 6400 6400 6600

0.4

0.8

1.2

1.6

2.4

2.8

3.2

-4

-3

-2

-1

-60 -50 -40 -30 -20 -10 0 10

ERR 2000MHz

ERR 2100MHz

ERR 2200MHz

LOGOUT 2000MHz

LOGOUT 2100MHz

LOGOUT 2200MHz

RMSOUT (V)

ERROR (dB)

INPUT POWER (dBm)

RMSOUT & Error vs. Pin Using

Tuned SE-Interface: 2100 ± 100 MHz [1]

Please contact Hittite Customer Support for single-ended tuning for other signal frequencies.

A DC bias (Vcc-1.2V) is present on the IN+ and IN- pins, and should not be overridden

Tuned SE-interface for signal frequency = 2100 MHz

Use R4 = 27, R11 = 82, C3 = 100 pF, L1=2.4nH, C4=2pF, R10 = 0. Refer to application circuit for single-ended

conguration on page 11-14.

HMC1010LP4E

v03.0511

RMS POWER DETECTOR

DC - 3.9 GHz

For price, delivery and to place orders: Hittite Microwave Corporation, 20 Alpha Road, Chelmsford, MA 01824

Phone: 978-250-3343 Fax: 978-250-3373 Order On-line at www.hittite.com

Application Support: Phone: 978-250-3343 or apps@hittite.com

POWER DETECTORS - SMT

11 - 19

[1] Measured from 10% to 90%

[2] Measured from RF switching edge to 1dB (input referred) settling of RMSOUT.

[3] Measured from 100% to 10%

Rise Time[1] vs.

SCI Setting over Input Power

Residual Ripple for 2.6 GHz WiMAX OFDM

Advanced 802.16 @ SCI = 0100

Fall Time[3] vs.

SCI Setting over Input Power

Rise Settling Time [2] vs.

SCI Setting over Input Power

Residual Ripple for 2.6 GHz WiMAX OFDM

Advanced 802.16 @ SCI = 0101

100

1000

10000

100000

0123456789101112

-40 dBm

-20 dBm

0 dBm

INTEGRATION SETTING (IN DECIMAL)

FALL TIME (us)

For increased load drive capability, consider a buffer

amplier on the RMS output. Using an integrating

amplier on the RMS output allows for an alternative

treatment for faster settling times. An external

amplier optimized for transient settling can also

provide additional RMS ltering, when operating

HMC1010LP4E with a lower SCI value.

Following gures show how the peak-to-peak ripple

decreases with higher SCI settings along with the RF

pulse response over different modulations.

0.01

0.1

100

1000

10000

0123456789101112

-40 dBm

-20 dBm

0 dBm

INTEGRATION SETTING (IN DECIMAL)

RISE TIME (us)

0.1

100

1000

10000

100000

0123456789101112

-40 dBm

-20 dBm

0 dBm

INTEGRATION SETTING (IN DECIMAL)

RISE TIME (us)

0.2

0.4

0.6

0.8

1.2

1.4

1.6

1.8

-100

-80

-60

-40

-20

100

0 50 100 150 200 250 300 350 400 450 500

SCI = 0000

SCI = 0100

RMSOUT (V)

RF INPUT VOLTAGE (mV)

TIME (us)

INPUT

RMSOUT

0.2

0.4

0.6

0.8

1.2

1.4

1.6

1.8

-100

-80

-60

-40

-20

100

0 50 100 150 200 250 300 350 400 450 500

SCI = 0000

SCI = 0101

RMSOUT (V)

RF INPUT VOLTAGE (mV)

TIME (us)

INPUT

RMSOUT

HMC1010LP4E

v03.0511

RMS POWER DETECTOR

DC - 3.9 GHz

For price, delivery and to place orders: Hittite Microwave Corporation, 20 Alpha Road, Chelmsford, MA 01824

Phone: 978-250-3343 Fax: 978-250-3373 Order On-line at www.hittite.com

Application Support: Phone: 978-250-3343 or apps@hittite.com

POWER DETECTORS - SMT

11 - 20

Residual Ripple for 2.6 GHz

WiBRO @ SCI = 0100

0.2

0.4

0.6

0.8

1.2

1.4

1.6

1.8

-100

-80

-60

-40

-20

100

0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5

SCI = 0000

SCI = 0100

RMSOUT (V)

RF INPUT VOLTAGE (mV)

TIME (ms)

INPUT

RMSOUT

Residual Ripple for 2.6 GHz

WiBRO @ SCI = 0110

0.2

0.4

0.6

0.8

1.2

1.4

1.6

1.8

-100

-80

-60

-40

-20

100

0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5

SCI = 0000

SCI = 0110

RMSOUT (V)

RF INPUT VOLTAGE (mV)

TIME (ms)

INPUT

RMSOUT

Residual Ripple for 2.6 GHz

LTE Downlink @ SCI = 0100

0.2

0.4

0.6

0.8

1.2

1.4

1.6

1.8

0 0.2 0.4 0.6 0.8 1 1.2 1.4 1.6 1.8 2

SCI = 0000

SCI = 0100

TIME (ms)

RMSOUT (V)

Residual Ripple for 2.6 GHz

LTE Downlink @ SCI = 0110

0.2

0.4

0.6

0.8

1.2

1.4

1.6

1.8

0 0.2 0.4 0.6 0.8 1 1.2 1.4 1.6 1.8 2

SCI = 0000

SCI = 0110

TIME (ms)

RMSOUT (V)

Residual Ripple for 2.6 GHz

WCDMA @ SCI = 0011

0.2

0.4

0.6

0.8

1.2

1.4

1.6

1.8

0 50 100 150 200 250 300 350 400 450 500

SCI = 0000

SCI = 0011

TIME (us)

RMSOUT (V)

Residual Ripple for 2.6 GHz

WCDMA @ SCI = 0100

0.2

0.4

0.6

0.8

1.2

1.4

1.6

1.8

0 50 100 150 200 250 300 350 400 450 500

SCI = 0000

SCI = 0100

TIME (us)

RMSOUT (V)

HMC1010LP4E

v03.0511

RMS POWER DETECTOR

DC - 3.9 GHz

For price, delivery and to place orders: Hittite Microwave Corporation, 20 Alpha Road, Chelmsford, MA 01824

Phone: 978-250-3343 Fax: 978-250-3373 Order On-line at www.hittite.com

Application Support: Phone: 978-250-3343 or apps@hittite.com

POWER DETECTORS - SMT

11 - 21

LOG-Slope and Intercept

The HMC1010LP4 provides for an adjustment of output scale with the use of an integrated operational amplier.

Logslope and intercept can be adjusted to “magnify” a specic portion of the input sensing range, and to fully utilize

the dynamic range of the RMS output.

A log-slope of 37.3 mV/dB (@1900 MHz) is set by connecting RMS Output to VSET through resistor network for ß = 1

(see application schematic).

The log-slope is adjusted by applying the appropriate resistors on the RMS and VSET pins. Log-intercept is adjusted

by applying a DC voltage to the VSET pin.

Optimized slope = ß * log-slope

Optimized intercept = log-intercept – (RFBK /RSET) * VBLINE

RFBK

RFBK // RSHUNT // RSET

ß =

When RFBK=0 to set RMSOUT=VSET, then ß=1/2

If RSET is not populated, then ß = ½ * (RFBK/ (RFBK // RSHUNT)) and intercept is at nominal value.

Example: The logarithmic slope can be simply increased by choosing appropriate RFBK and RSHUNT values while

not populating the RSET resistor on the evaluation board to keep the intercept at nominal value.

Setting RFBK =4.7K and RSHUNT = 2.2K results in an optimized slope of:

Optimized Slope = ß * log_slope = 1.57* 37.3mV / dB

Optimized Slope = 58 mV / dB

HMC1010LP4E

v03.0511

RMS POWER DETECTOR

DC - 3.9 GHz

For price, delivery and to place orders: Hittite Microwave Corporation, 20 Alpha Road, Chelmsford, MA 01824

Phone: 978-250-3343 Fax: 978-250-3373 Order On-line at www.hittite.com

Application Support: Phone: 978-250-3343 or apps@hittite.com

POWER DETECTORS - SMT

11 - 22

Slope Adjustment

0.5

1.5

2.5

3.5

4.5

-70 -60 -50 -40 -30 -20 -10 0 10

High Slope

Nominal

INPUT POWER (dBm)

RMSOUT (V)

Slope = 58 mV/dB

Rset = open

Rfbk = 4.7 Kohm

Rshunt = 2.2 Kohm

Slope = 37.3 mV/dB

Rset = open

Rfbk = 4.7 Kohm

Rshunt = 4.7 Kohm

Example: The logarithmic intercept can also be adjusted by choosing appropriate RFBK, RSHUNT, and RSET values.

Setting RFBK = 4.7K, RSHUNT =2.2K, and RSET = 24K results in an optimized slope of:

Optimized Slope = ß * log_slope = 1.67 * 37.3 mV / dB

Optimized Slope = 62 mV / dB

Optimized Intercept = log_intercept –(RFBK/RSET)*VBLINE

Optimized Intercept = log_intercept - 0.196 * VBLINE

Intercept Adjustment

0.5

1.5

2.5

3.5

4.5

-70 -60 -50 -40 -30 -20 -10 0 10

VBLINE = -3.2 V

VBLINE = -1.6 V

VBLINE = -0.8 V

VBLINE = 0 V

VBLINE = +0.8 V

VBLINE = +1.6 V

VBLINE = +3.2 V

INPUT POWER (dBm)

RMSOUT (V)

Rset = 24 Kohm

Rfbk = 4.7 Kohm

Rshunt = 2.2 Kohm

HMC1010LP4E

v03.0511

RMS POWER DETECTOR

DC - 3.9 GHz

For price, delivery and to place orders: Hittite Microwave Corporation, 20 Alpha Road, Chelmsford, MA 01824

Phone: 978-250-3343 Fax: 978-250-3373 Order On-line at www.hittite.com

Application Support: Phone: 978-250-3343 or apps@hittite.com

POWER DETECTORS - SMT

11 - 23

DC Offset Compensation Loop

Internal DC offsets, which are input signal dependant, require continuous cancellation. Offset cancellation is a critical

function needed for maintenance of measurement accuracy and sensitivity. The DC offset cancellation loop performs

this function, and its response is largely dened by the capacitance (COFS) connected between COFSA, COFSB

pins.

COFS sets the loop bandwidth of the DC offset compensations. Higher COFS values are required for measuring

lower RF frequencies. The optimal loop bandwidth setting will allow internal offsets to be cancelled at a minimally

acceptable speed.

DC Offset Cancellation Loop ≈ Bandwidth , Hz

For example: loop bandwidth for DC cancellation with COFS = 1nF, bandwidth is ~62 kHz

Standby Mode

The ENX can be used to force the power detector into a low-power standby mode. As ENX is deactivated, power is

restored to all of the circuits. There is no memory of previous conditions. Coming-out of stand-by, internal integration

and COFS capacitors will require recharging, so if large SCI values have been chosen, the wake-up time will be

lengthened.

Modulation Performance – Crest factor performance

The HMC1010LP4E can detect modulated signals with very high crest factors accurately.

For example, up to 2.7 GHz, a modulated RF signal with a crest factor of 15 dB can be detected with 0.2 dB error.

RMSOUT Error vs.

Crest Factor over Frequency

-1

-0.8

-0.6

-0.4

-0.2

0.2

0.4

0.6

0.8

3 4 5 6 7 8 9 10 11 12 13 14 15

900 MHz error from CW (-22 dBm)

1900 MHz error from CW (-22 dBm)

2700 MHz error from CW (-22 dBm)

3900 MHz error from CW (-22 dBm)

CREST FACTOR (dB)

RMSOUT ERROR (dB)

System Calibration

Due to part-to-part variations in log-slope and log-intercept, a system-level calibration is recommended to satisfy

absolute accuracy requirements. When performing this calibration, choose at least two test points: near the top end

and bottom-end of the measurement range. It is best to measure the calibration points in the regions (of frequency

and amplitude) where accuracy is most important. Derive the log-slope and log-intercept, and store them in non-

volatile memory.

For example if the following two calibration points were measured at 2.2 GHz:

With RMSOUT = 2.321V at Pin= -5 dBm,

and RMSOUT = 0.809V at Pin= -45 dBm

slope calibration constant = SCC

SCC = (-45+5)/(0.809-2.321) = 26.45 dB/V

intercept calibration constant = ICC

ICC = Pin – SCC*RMSOUT = -5 – 26.45 * 2.321 = -66.39 dBm

HMC1010LP4E

v03.0511

RMS POWER DETECTOR

DC - 3.9 GHz

For price, delivery and to place orders: Hittite Microwave Corporation, 20 Alpha Road, Chelmsford, MA 01824

Phone: 978-250-3343 Fax: 978-250-3373 Order On-line at www.hittite.com

Application Support: Phone: 978-250-3343 or apps@hittite.com

POWER DETECTORS - SMT

11 - 24

Now performing a power measurement at -25 dBm:

RMSOUT measures 1.559V

[Measured Pin] = [Measured RMSOUT]*SCC + ICC

[Measured Pin] = 1.559*26.45 – 66.39 = -25.155 dBm

An error of only 0.155 dB

Factory system calibration measurements should be made using an input signal representative of the application. If

the power detector will operate over a wide range of frequencies, choose a central frequency for calibration.

Layout Considerations

• Mount RF input coupling capacitors close to the IN+ and IN- pins.

• Solder the heat slug on the package underside to a grounded island which can draw heat away from the die with

low thermal impedance. The grounded island should be at RF ground potential.

• Connect power detector ground to the RF ground plane, and mount the supply decoupling capacitors close

to the supply pins.

Denitions

• Log-slope: slope of PIN –> RMSOUT transfer characteristic. In units of mV/dB

• Log-intercept: x-axis intercept of PIN –> RMSOUT transfer characteristic. In units of dBm.

• RMS Output Error: The difference between the measured PIN and actual PIN using a line of best t.

[measured_PIN] = [measured_ RMSOUT] / [best-t-slope] + [best-t-intercept], dBm

• Input Dynamic Range: the range of average input power for which there is a corresponding RMS output

voltage with “RMS Output Error” falling within a specic error tolerance.

• Crest Factor: Peak power to average power ratio for time-varying signals.

HMC1010LP4E

v03.0511

RMS POWER DETECTOR

DC - 3.9 GHz