POWER DETECTORS - SMT
7
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For price, delivery, and to place orders, please contact Hittite Microwave Corporation:
20 Alpha Road, Chelmsford, MA 01824 Phone: 978-250-3343 Fax: 978-250-3373
Order On-line at www.hittite.com
The HMC612LP4(E) Logarithmic Detector/Controller is
ideal for converting input signals with frequencies in the
50 Hz to 3 GHz range, to a proportional DC voltage at
its output. The HMC612LP4(E) employs a successive
compression technology which delivers extremely high
dynamic range and conversion accuracy over a wide
input frequency range. As the input signal is increased,
successive ampli ers move into saturation one by one
creating an accurate approximation of the logarithm
function. The output of a series of square law detectors
is summed, converted into voltage domain and buff-
ered to drive the LOGOUT output. For detection mode,
the LOGOUT pin is shorted to the VSET input and will
provide a nominal logarithmic slope of 19 mV/dB and an
intercept of -99 dBm. The HMC612LP4(E) can also be
used in the controller mode where an external voltage
is applied to the VSET pin, to create an AGC or APC
feedback loop.
General Description
HMC612LP4 / 612LP4E
Features
Functional Diagram
Wide Input Bandwidth: 50 Hz to 3 GHz
Wide Dynamic Range: Up to 74 dB
High Accuracy: ±1 dB with 60 dB Range Up to 0.9 GHz
Supply Voltage: +2.7V to +5.5V
Excellent Stability over Temperature
Power-Down Mode
Compact 4x4mm Leadless SMT Package
Typical Applications
The HMC612LP4(E) is ideal for IF and RF applica-
tions in:
• Cellular/PCS/3G
• WiMAX, WiBro, WLAN, Fixed Wireless & Radar
• Power Monitoring & Control Circuitry
• Receiver Signal Strength Indication (RSSI)
• Automatic Gain & Power Control
Electrical Speci cations, TA = +25C[1]
Parameter Typ. Typ. Typ. Typ. Typ. Typ. Typ. Typ. Typ. Typ. Typ. Typ. Units
Input Frequency 0.00005 0.0001 0.001 0.01 0.1 1 10 100 900 1900 2500 3000 MHz
±3 dB Dynamic Range 75 75 75 75 74 74 74 74 72 64 60 55 dB
±3 dB Dynamic Range Center -30 -30 -30 -31 -33 -34 -34 dBm
±3 dB Dynamic Range Center -45 -44.5 -45.5 -45 -45 dBV
±1 dB Dynamic Range 68 67 68 67 65 68 66 66 64 55 52 45 dB
Output Slope 19.7 19.7 19.6 19.6 19.8 19.7 19.8 19.8 19.4 19.4 19.8 20.8 mV/dB
Output Intercept -94.5 -93.9 -93.8 -94.8 -92.5 -91.3 -86.4 dBm
Output Inte r c ept -110 -110.2 -110 .6 -110 .6 -110 .0 dBV
Tem perature
Sensitivity @ -43 dBV Input [2] -9.9 -11.9 -11.3 -11.3 -11.3 mdBV/°C
Tem perature
Sensitivity @ -30 dBm Input [2] -12.5 -12.2 -11.7 -11.2 -11.7 -12.1 -13.4 mdBm/°C
[1] Detector mode measurements; LOGOUT (Pin 17) is shorted to VSET (Pin 18).
[2] Measured from TA = -45C to TA = +85C, Vdd1, Vdd2 = 5V
75 dB LOGARITHMIC
DETECTOR / CONTROLLER, 50 Hz - 3000 MHz
v01.0108
POWER DETECTORS - SMT
7
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For price, delivery, and to place orders, please contact Hittite Microwave Corporation:
20 Alpha Road, Chelmsford, MA 01824 Phone: 978-250-3343 Fax: 978-250-3373
Order On-line at www.hittite.com
Electrical Speci cations, (continued)
Parameter Conditions Min. Typ. Max. Units
LOGOUT Interface
Output Voltage Range 0 Vcc - 0.15 V
Output Rise Time/Fall Time @ -15 dBm From 0% to 90% 19/100 ns
VSET Interface
Input Impedance 30 k
Input Voltage Range 0.6 to 1.9 V
Power Down (EN) Interface
Voltage Range for Normal Mode 0 0.2 x Vcc V
Voltage Range for Powerdown Mode 0.8 x Vcc Vcc V
Threshold Voltage Vcc /2 V
Power Supply (Vcc1, Vcc2)
Operating Voltage Range 2.7 5.5 V
Supply Current in Normal Mode 30 mA
Supply Current in Power Down Mode 1mA
[1] Vdd1 = Vdd2 = 5V
Parameter Condition
Vdd1 = Vdd2 +5V
Input Zo - w/ 68  Term Resistor at IN+ 50 
TA+25 C
Fin 900 MHz
IN- Port connected to ground through a 10 F capacitor
Test Conditions
LOGOUT Voltage & Error
vs. Input Signal, Fin = 100 Hz
LOGOUT Voltage & Error
vs. Input Signal, Fin = 50 Hz
Vdd1 = Vdd2 = 5V
HMC612LP4 / 612LP4E
v01.0108 75 dB LOGARITHMIC
DETECTOR / CONTROLLER, 50 Hz - 3000 MHz
0.2
0.6
1
1.4
1.8
2.2
2.6
-3
-2
-1
0
1
2
3
-90 -80 -70 -60 -50 -40 -30 -20 -10 0
Ideal
Logout (+25c)
Logout (+85c)
Logout (-45c)
ERR (+25c)
ERR (+85c)
ERR (-45c)
LOGOUT (V)
ERROR (dB)
dBV
0.2
0.6
1
1.4
1.8
2.2
2.6
-3
-2
-1
0
1
2
3
-90 -80 -70 -60 -50 -40 -30 -20 -10 0
Ideal
Logout (+25c)
Logout (+85c)
Logout (-45c)
ERR (+25c)
ERR (+85c)
ERR (-45c)
LOGOUT (V)
ERROR (dB)
dBV
POWER DETECTORS - SMT
7
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For price, delivery, and to place orders, please contact Hittite Microwave Corporation:
20 Alpha Road, Chelmsford, MA 01824 Phone: 978-250-3343 Fax: 978-250-3373
Order On-line at www.hittite.com
LOGOUT Voltage & Error
vs. Input Signal, Fin = 100 kHz
LOGOUT Voltage & Error
vs. Input Signal, Fin = 1 kHz
Vdd1 = Vdd2 = 5V
LOGOUT Voltage & Error
vs. Input Power, Fin = 1 MHz
LOGOUT Voltage & Error
vs. Input Power, Fin = 10 MHz
LOGOUT Voltage & Error
vs. Input Power, Fin = 100 MHz
HMC612LP4 / 612LP4E
v01.0108 75 dB LOGARITHMIC
DETECTOR / CONTROLLER, 50 Hz - 3000 MHz
0.2
0.6
1
1.4
1.8
2.2
2.6
-3
-2
-1
0
1
2
3
-70 -60 -50 -40 -30 -20 -10 0 10
Ideal
LOGOUT +25C
LOGOUT +85C
LOGOUT -45C
ERR +25C
ERR +85C
ERR -45C
LOGOUT (V)
ERROR (dB)
INPUT POWER (dBm)
0.2
0.6
1
1.4
1.8
2.2
2.6
-3
-2
-1
0
1
2
3
-70 -60 -50 -40 -30 -20 -10 0 10
Ideal
LOGOUT +25C
LOGOUT +85C
LOGOUT -45C
ERR +25C
ERR +85C
ERR -45C
LOGOUT (V)
ERROR (dB)
INPUT POWER (dBm)
0.2
0.6
1
1.4
1.8
2.2
2.6
-3
-2
-1
0
1
2
3
-70 -60 -50 -40 -30 -20 -10 0 10
Ideal
LOGOUT +25C
LOGOUT +85C
LOGOUT -45C
ERR +25C
ERR +85C
ERR -45C
LOGOUT (V)
ERROR (dB)
INPUT POWER (dBm)
LOGOUT Voltage & Error
vs. Input Power, Fin = 900 MHz
0.2
0.6
1
1.4
1.8
2.2
2.6
-3
-2
-1
0
1
2
3
-70 -60 -50 -40 -30 -20 -10 0 10
Ideal
LOGOUT +25C
LOGOUT +85C
LOGOUT -45C
ERR +25C
ERR +85C
ERR -45C
LOGOUT (V)
ERROR (dB)
INPUT POWER (dBm)
0.2
0.6
1
1.4
1.8
2.2
2.6
-3
-2
-1
0
1
2
3
-90 -80 -70 -60 -50 -40 -30 -20 -10 0
Ideal
Logout (+25c)
Logout (+85c)
Logout (-45c)
ERR (+25c)
ERR (+85c)
ERR (-45c)
LOGOUT (V)
ERROR (dB)
dBV
0.2
0.6
1
1.4
1.8
2.2
2.6
-3
-2
-1
0
1
2
3
-90 -80 -70 -60 -50 -40 -30 -20 -10 0
Ideal
Logout (+25c)
Logout (+85c)
Logout (-45c)
ERR (+25c)
ERR (+85c)
ERR (-45c)
LOGOUT (V)
ERROR (dB)
dBV
POWER DETECTORS - SMT
7
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For price, delivery, and to place orders, please contact Hittite Microwave Corporation:
20 Alpha Road, Chelmsford, MA 01824 Phone: 978-250-3343 Fax: 978-250-3373
Order On-line at www.hittite.com
Vdd1 = Vdd2 = 5V
LOGOUT Voltage & Error
vs. Input Power, Fin = 1900 MHz
LOGOUT Voltage & Error
vs. Input Power, Fin = 2500 MHz
LOGOUT Slope vs. Frequency, Vcc= 3.3V
LOGOUT Slope
vs. Supply Voltage, TA= +25C
HMC612LP4 / 612LP4E
v01.0108 75 dB LOGARITHMIC
DETECTOR / CONTROLLER, 50 Hz - 3000 MHz
LOGOUT Voltage & Error
vs. Input Power, Fin = 3000 MHz
0.2
0.6
1
1.4
1.8
2.2
2.6
-3
-2
-1
0
1
2
3
-70 -60 -50 -40 -30 -20 -10 0 10
Ideal
LOGOUT +25C
LOGOUT +85C
LOGOUT -45C
ERR +25C
ERR +85C
ERR -45C
LOGOUT (V)
ERROR (dB)
INPUT POWER (dBm)
0.2
0.6
1
1.4
1.8
2.2
2.6
-3
-2
-1
0
1
2
3
-70 -60 -50 -40 -30 -20 -10 0 10
Ideal
LOGOUT +25C
LOGOUT +85C
LOGOUT -45C
ERR +25C
ERR +85C
ERR -45C
LOGOUT (V)
ERROR (dB)
INPUT POWER (dBm)
0.2
0.6
1
1.4
1.8
2.2
2.6
-3
-2
-1
0
1
2
3
-70 -60 -50 -40 -30 -20 -10 0 10
Ideal
LOGOUT +25C
LOGOUT +85C
LOGOUT -45C
ERR +25C
ERR +85C
ERR -45C
LOGOUT (V)
ERROR (dB)
INPUT POWER (dBm)
18
19
20
21
22
23
24
0 500 1000 1500 2000 2500 3000
+25C
+85C
-45C
SLOPE (mV/dB)
FREQUENCY (MHz)
LOGOUT Intercept
vs. Frequency, Vcc= 3.3V
-100
-95
-90
-85
-80
-75
-70
0 500 1000 1500 2000 2500 3000
+25C
+85C
-45C
INTERCEPT (dBm)
FREQUENCY (MHz)
19
20
21
22
23
24
25
2.5 3 3.5 4 4.5 5 5.5
1MHz
10MHz
100MHz
900MHz
1900MHz
2500Hz
3000MHz
SLOPE (mV/dB)
Vcc (Volts)
POWER DETECTORS - SMT
7
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For price, delivery, and to place orders, please contact Hittite Microwave Corporation:
20 Alpha Road, Chelmsford, MA 01824 Phone: 978-250-3343 Fax: 978-250-3373
Order On-line at www.hittite.com
LOGOUT Error vs. Input Power,
Normalized, Fin= 100 MHz [1]
LOGOUT Voltage
vs. Input Power & Frequency
LOGOUT Intercept
vs. Supply Voltage, TA= +25C
Input Return Loss
vs. Frequency, Vcc= 3.3V
[1] This data is relative to the room temperature performance of the HMC612LP4(E)
[2] Intermediate step up to 4 µs on falling-edge when operated beyond linear dynamic range.
HMC612LP4 / 612LP4E
v01.0108 75 dB LOGARITHMIC
DETECTOR / CONTROLLER, 50 Hz - 3000 MHz
-35
-30
-25
-20
-15
-10
-5
0
012345
+25 C
+85 C
-45 C
INPUT RETURN LOSS (dB)
FREQUENCY (GHz)
-2
-1.5
-1
-0.5
0
0.5
1
1.5
2
-70 -60 -50 -40 -30 -20 -10 0 10
+85 C
-45 C
RELATIVE ERROR TO 25°C (dB)
INPUT POWER (dBm)
0
0.2
0.4
0.6
0.8
1
1.2
1.4
1.6
1.8
2
2.2
2.4
-70 -60 -50 -40 -30 -20 -10 0 10
1 MHz
10 MHz
100 MHz
900 MHz
1900MHz
2500MHz
3000MHz
LOGOUT (V)
INPUT POWER (dBm)
Fall Time @ 600 MHz Over Power Level Fall Time @ 2400 MHz Over Power Level [2]
0.6
0.8
1
1.2
1.4
1.6
1.8
2
012345678910
0dBm
-5dBm
-10dBm
-15dBm
LOGOUT (Volts)
TIME (us)
0.6
0.8
1
1.2
1.4
1.6
1.8
2
012345678910
0dBm
-5dBm
-10dBm
-15dBm
LOGOUT (Volts)
TIME (us)
-110
-100
-90
-80
-70
-60
-50
2.5 3 3.5 4 4.5 5 5.5
1MHz
10MHz
100MHz
900MHz
1900MHz
2500Hz
3000MHz
INTERCEPT (dBm)
Vcc (Volts)
POWER DETECTORS - SMT
7
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For price, delivery, and to place orders, please contact Hittite Microwave Corporation:
20 Alpha Road, Chelmsford, MA 01824 Phone: 978-250-3343 Fax: 978-250-3373
Order On-line at www.hittite.com
Absolute Maximum Ratings
ELECTROSTATIC SENSITIVE DEVICE
OBSERVE HANDLING PRECAUTIONS
Outline Drawing
Part Number Package Body Material Lead Finish MSL Rating Package Marking [3]
HMC612LP4 Low Stress Injection Molded Plastic Sn/Pb Solder MSL1 [1] H612
XXXX
HMC612LP4E RoHS-compliant Low Stress Injection Molded Plastic 100% matte Sn MSL1 [2] H612
XXXX
[1] Max peak re ow temperature of 235 °C
[2] Max peak re ow temperature of 260 °C
[3] 4-Digit lot number XXXX
Package Information
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.
HMC612LP4 / 612LP4E
v01.0108 75 dB LOGARITHMIC
DETECTOR / CONTROLLER, 50 Hz - 3000 MHz
Vcc1, Vcc2 0V to +5.5V
PWD 0V to +5.5V
VSET Input Voltage 0V to +5.5V
LOGOUT Output Current 3 mA
RF Input Power +10 dBm
Junction Temperature 125 °C
Continuous Pdiss (T = 85°C)
(Derate 7.95 mW/°C above 85°C) 0.32 Watts
Thermal Resistance (Rth)
(junction to package base) 126 °C/W
Storage Temperature -65 to +150 °C
Operating Temperature -45 to +85 °C
POWER DETECTORS - SMT
7
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For price, delivery, and to place orders, please contact Hittite Microwave Corporation:
20 Alpha Road, Chelmsford, MA 01824 Phone: 978-250-3343 Fax: 978-250-3373
Order On-line at www.hittite.com
Pin Descriptions
HMC612LP4 / 612LP4E
v01.0108 75 dB LOGARITHMIC
DETECTOR / CONTROLLER, 50 Hz - 3000 MHz
Pin Number Function Description Interface Schematic
1, 6, 7 - 12,
15, 18 - 21 N/C
These pins are not connected internally; however, this
product is speci ed with these pins connected to RF/DC
ground.
2, 5 Vcc1, Vcc2 Bias supply. Connect supply voltage to both pins.
3, 4 INP, INN RF Input pins. Connect RF to INP, and AC couple
INN to ground for single-ended operation.
13 CLPF Loop  lter capacitor for output ripple  ltering.
14 PWD Connect to 0V for normal operation. Applying voltage
>0.8 x Vcc will initiate a power saving shutdown mode.
POWER DETECTORS - SMT
7
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For price, delivery, and to place orders, please contact Hittite Microwave Corporation:
20 Alpha Road, Chelmsford, MA 01824 Phone: 978-250-3343 Fax: 978-250-3373
Order On-line at www.hittite.com
Pin Descriptions
HMC612LP4 / 612LP4E
v01.0108 75 dB LOGARITHMIC
DETECTOR / CONTROLLER, 50 Hz - 3000 MHz
Pin Number Function Description Interface Schematic
16 VSET VSET input in controller mode. Short this
pin to LOGOUT for detector mode.
17 LOGOUT
Logarithmic output that converts the input power
to a DC level in detector mode. Short this pin to
VSET for detector mode.
22, 23 COFSB,
COFSA
External capacitor should be connected to these pins to
reduce system high pass corner frequency for RF signal
detection. Large capacitor is required for detecting low
frequency signals.
Package
Base GND Exposed paddle must be connected to RF and DC ground.
POWER DETECTORS - SMT
7
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For price, delivery, and to place orders, please contact Hittite Microwave Corporation:
20 Alpha Road, Chelmsford, MA 01824 Phone: 978-250-3343 Fax: 978-250-3373
Order On-line at www.hittite.com
HMC612LP4 / 612LP4E
v01.0108 75 dB LOGARITHMIC
DETECTOR / CONTROLLER, 50 Hz - 3000 MHz
Evaluation PCB
The circuit board used in the  nal application should
use RF circuit design techniques. Signal lines
should 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 118980 [1]
Item Description
J1 - J4 PC Mount SMA Connector
J5 - J8 DC Pin
C1, C2 10 µF Capacitor, 0603 Pkg.
C3, C4 0.1 µF Capacitor, 0402 Pkg.
C5, C6, C7 47 µF Capacitor, 0805 Pkg.
R1, R2 6.8 Resistor, 0603 Pkg.
R3, R4, R5 0 Resistor, 0603 Pkg.
R6 49.9 Resistor, 0402 Pkg.
U1 HMC612LP4 / HMC612LP4E
Logarithmic Detector / Controller
PCB [2] 118978 Evaluation PCB
[1] Reference this number when ordering complete evaluation PCB
[2] Circuit Board Material: Rogers 4350
POWER DETECTORS - SMT
7
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For price, delivery, and to place orders, please contact 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 & Evaluation PCB Schematic
Notes
Note 1: The HMC612LP4 & HMC612LP4E evaluation boards are pre-assembled for single-ended input, and detector/RSSI mode.
Note 2: For detector mode, connect high impedance volt meter to the LOGOUT port. VSET is shorted to LOGOUT by R3, as
required for detector mode.
Note 3: For low frequency operation remove R6.
Note 4: Faster rise/fall time remove C6, C7 and C5
HMC612LP4 / 612LP4E
v01.0108 75 dB LOGARITHMIC
DETECTOR / CONTROLLER, 50 Hz - 3000 MHz