12 - 1
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
VARIABLE GAIN AMPLIFIERS - DIGITAL - SMT
12
HMC627LP5 / 627LP5E
v10.0410
Functional Diagram
Electrical Specications, TA = +25° C, 50 Ohm System Vdd = +5V, Vs= +5V
The HMC627LP5(E) is ideal for:
• Cellular/3G Infrastructure
• WiBro / WiMAX / 4G
• Microwave Radio & VSAT
• Test Equipment and Sensors
• IF & RF Applications
-11.5 to 20 dB Gain Control in 0.5 dB Steps
Power-up State Selection
High Output IP3: +36 dBm
TTL/CMOS Compatible
Serial, Parallel, or latched Parallel Control
±0.25 dB Typical Gain Step Error
Single +5V Supply
32 Lead 5x5mm SMT Package: 25mm2
The HMC627LP5(E) is a digitally controlled variable
gain amplier which operates from 50 MHz to 1 GHz,
and can be programmed to provide anywhere from
11.5 dB attenuation, to 20 dB of gain, in 0.5 dB steps.
The HMC627LP5(E) delivers noise gure of 4.3 dB
in its maximum gain state, with output IP3 of up to
+36 dBm in any state. The dual mode gain control
interface accepts either three wire serial input or 6
bit parallel word. The HMC627LP5(E) also features a
user selectable power up state and a serial output for
cascading other Hittite serially controlled components.
The HMC627LP5(E) is housed in a RoHS compliant
5x5 mm QFN leadless package, and requires no
external matching components.
Parameter Min. Typ. Max. Min. Typ. Max. Units
50 - 350 350 - 1000 MHz
Gain (Maximum Gain State) 18 20 15 17.5 dB
Gain Control Range 31.5 31.5 dB
Input Return Loss 18 17
Output Return Loss 20 12 12 dB
Gain Accuracy: (Referenced to Maximum Gain State)
All Gain States
50 MHz -100MHz, 250 MHz - 350 MHz
± (0.2 + 3% of Gain Setting) Max
100 MHZ - 250 MHz
± (0.1 + 2% of Gain Setting) Max
± (0.3 + 3% of Gain Setting) Max dB
Output Power for 1 dB Compression 18 20 16 20 dBm
Output Third Order Intercept Point
(Two-Tone Input Power= 0 dBm Each Tone) 33 36 33 36 dBm
Noise Figure 4.3 4.3 dB
Switching Characteristics tRISE, tFall (10 / 90% RF) 170
70
170
70 ns
tON, tOFF (Latch Enable to 10 / 90% RF)
Supply Current (Idd) 90 110 90 110 mA
Typical Applications Features
General Description
0.5 dB LSB GaAs MMIC 6-BIT DIGITAL
VARIABLE GAIN AMPLIFIER, 50 MHz - 1 GHz
12 - 2
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
VARIABLE GAIN AMPLIFIERS - DIGITAL - SMT
12
Input Return Loss [1]
(Only Major States are Shown)
Normalized Attenuation vs. Frequency
(Only Major States are Shown)
Maximum Gain vs. Frequency [1]
Output Return Loss [1]
(Only Major States are Shown)
Input Return Loss [2]
(Only Major States are Shown)
0
5
10
15
20
25
0 0.5 1 1.5 2 2.5 3 3.5 4
+25 C
-40 C
+85 C
GAIN (dB)
FREQUENCY (GHz)
[2]
[1]
-40
-35
-30
-25
-20
-15
-10
-5
0
0 0.5 1 1.5 2 2.5 3 3.5 4
RETURN LOSS (dB)
FREQUENCY (GHz)
I.L, .5, 2, 4dB
1dB 16dB
8dB
31.5dB
-40
-35
-30
-25
-20
-15
-10
-5
0
0 0.5 1 1.5 2 2.5 3 3.5 4
RETURN LOSS (dB)
FREQUENCY (GHz)
31.5 dB
I.L.
-40
-35
-30
-25
-20
-15
-10
-5
0
0 0.5 1 1.5 2 2.5 3 3.5 4
RETURN LOSS (dB)
FREQUENCY (GHz)
2, 4 dB
I.L, 0.5 dB
1 dB
16 dB
8, 31.5 dB
-35
-30
-25
-20
-15
-10
-5
0
0 0.5 1 1.5 2 2.5 3 3.5 4
NORMALIZED ATTENUATION (dB)
FREQUENCY (GHz)
16 dB
31.5 dB
8 dB
[1] Tested with broadband bias tee on RF ports and C1 = 10,000pF
[2] C1, C6 and C8 = 100pF, L1 = 270nF
Output Return Loss [2]
(Only Major States are Shown)
-40
-35
-30
-25
-20
-15
-10
-5
0
0 0.5 1 1.5 2 2.5 3 3.5 4
RETURN LOSS (dB)
FREQUENCY (GHz)
31.5 dB
I.L
0.5, 2, 4, 8 dB
1, 16 dB
HMC627LP5 / 627LP5E
v10.0410
0.5 dB LSB GaAs MMIC 6-BIT DIGITAL
VARIABLE GAIN AMPLIFIER, 50 MHz - 1 GHz
12 - 3
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
VARIABLE GAIN AMPLIFIERS - DIGITAL - SMT
12
Step Error vs. Frequency [2]
(Only Major States are Shown)
Bit Error vs. Frequency [2]
(Only Major States are Shown) Bit Error vs. Attenuation State [2]
Normal Relative Phase vs. Frequency [2]
(Only Major States are Shown)
-2
-1.5
-1
-0.5
0
0.5
1
1.5
2
0 0.5 1 1.5 2 2.5 3 3.5 4
BIT ERROR (dB)
FREQUENCY (GHz)
31.5 dB
31.5 dB
-1
-0.8
-0.6
-0.4
-0.2
0
0.2
0.4
0.6
0.8
1
0 4 8 12 16 20 24 28 32
BIT ERROR (dB)
ATTENUATION STATE (dB)
800 MHz
2.4 GHz
FREQUENCY'S: 400, 800, 1200, 1600, 2000, 2400 MHz
-40
-20
0
20
40
60
80
0 0.5 1 1.5 2 2.5 3 3.5 4
RELATIVE PHASE (deg)
FREQUENCY (GHz)
31.5 dB
16 dB
8 dB
0.5 - 4 dB
-1
-0.8
-0.6
-0.4
-0.2
0
0.2
0.4
0.6
0.8
1
0 0.5 1 1.5 2 2.5 3 3.5 4
STEP ERROR (dB)
FREQUENCY (GHz)
2 dB
2, 4, 8 dB
0.5, 1, 31.5 dB 16 dB
[1] Tested with broadband bias tee on RF ports and C1 = 10,000pF
[2] C1, C6 and C8 = 100pF, L1 = 270nF
[3] C1, C6, C8 = 3300pF; C3, C4 & C5 = 330pF; L1 = 560nH
HMC627LP5 / 627LP5E
v10.0410
0.5 dB LSB GaAs MMIC 6-BIT DIGITAL
VARIABLE GAIN AMPLIFIER, 50 MHz - 1 GHz
Maximum Gain vs. Frequency[3]
0
5
10
15
20
25
0.05 0.1 0.15 0.2 0.25 0.3 0.35
GAIN (dB)
FREQUENCY (GHz)
Normalized Attenuation vs. Frequency [3]
-35
-30
-25
-20
-15
-10
-5
0
0.05 0.1 0.15 0.2 0.25 0.3 0.35
NORMALIZED ATTENUATION (dB)
FREQUENCY (GHz)
31.5 dB
16 dB
8 dB
12 - 4
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
VARIABLE GAIN AMPLIFIERS - DIGITAL - SMT
12
Step Error vs. Frequency [3]
Input Return Loss [3] Output Return Loss [3]
Normal Relative Phase vs. Frequency [3]
Bit Error vs. Frequency [3] Bit Error vs. Attenuation State [3]
-40
-20
0
20
40
60
80
0.05 0.1 0.15 0.2 0.25 0.3 0.35
RELATIVE PHASE (deg)
FREQUENCY (GHz)
31.5 dB
16 dB
8 dB
-40
-35
-30
-25
-20
-15
-10
-5
0
0.05 0.1 0.15 0.2 0.25 0.3 0.35
RETURN LOSS (dB)
FREQUENCY (GHz)
31.5 dB
I. L
-2
-1.5
-1
-0.5
0
0.5
1
1.5
2
0.05 0.1 0.15 0.2 0.25 0.3 0.35
BIT ERROR (dB)
FREQUENCY (GHz)
31.5 dB
8, 16 dB
0.5, 1, 2, 4 dB
-2
-1.5
-1
-0.5
0
0.5
1
1.5
2
0 4 8 12 16 20 24 28 32
BIT ERROR (dB)
ATTENUATION STATE (dB)
50 MHz
100, 150, 200, 250, 300, 350 MHz
-40
-35
-30
-25
-20
-15
-10
-5
0
0.05 0.1 0.15 0.2 0.25 0.3 0.35
RETURN LOSS (dB)
FREQUENCY (GHz)
8, 16, 31.5 dB
1 dB
IL, 0.5, 2, 4 dB
-1
-0.8
-0.6
-0.4
-0.2
0
0.2
0.4
0.6
0.8
1
0.05 0.1 0.15 0.2 0.25 0.3 0.35
STEP ERROR (dB)
FREQUENCY (GHz)
8 dB
0.5, 31.5 dB
[3] C1, C6, C8 = 3300pF; C3, C4 & C5 = 330pF; L1 = 560nH
HMC627LP5 / 627LP5E
v10.0410
0.5 dB LSB GaAs MMIC 6-BIT DIGITAL
VARIABLE GAIN AMPLIFIER, 50 MHz - 1 GHz
12 - 5
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
VARIABLE GAIN AMPLIFIERS - DIGITAL - SMT
12
Serial Control Interface
Parallel Mode (Direct Parallel Mode & Latched Parallel Mode)
The HMC627LP5(E) contains a 3-wire SPI compatible digital interface (SERIN, CLK, LE). It is activated when P/S
is kept high. The 6-bit serial word must be loaded MSB rst. The positive-edge sensitive CLK and LE requires
clean transitions. If mechanical switches were used, sufficient debouncing should be provided. When LE is high,
6-bit data in the serial input register is transferred to the attenuator. When LE is high CLK is masked to prevent data
transition during output loading.
When P/S is low, 3-wire SPI interface inputs (SERIN, CLK, LE) are disabled and serial input register is loaded
asynchronously with parallel digital inputs (D0-D5). When Le is high, 6-bit parallel data is transferred to the attenuator.
For all modes of operations, the DVGA state will stay constant while LE is kept low.
Note: The parallel mode is enabled when P/S is set to low.
Direct Parallel Mode - The attenuation state is changed by the Control Voltage Inputs directly. The LE (Latch Enable)
must be at a logic high to control the attenuator in this manner.
Latched Parallel Mode - The attenuation state is selected using the Control Voltage Inputs and set while the LE is in
the Low state. The attenuator will not change state while LE is Low. Once all Control Voltage Inputs are at the desired
states the LE is pulsed. See timing diagram above for reference.
Timing Diagram (Latched Parallel Mode)
HMC627LP5 / 627LP5E
v10.0410
0.5 dB LSB GaAs MMIC 6-BIT DIGITAL
VARIABLE GAIN AMPLIFIER, 50 MHz - 1 GHz
Parameter Typ.
Min. serial period, tSCK 100 ns
Control set-up time, tCS 20 ns
Control hold-time, tCH 20 ns
LE setup-time, tLN 10 ns
Min. LE pulse width, tLEW 10 ns
Min LE pulse spacing, tLES 630 ns
Serial clock hold-time from LE, tCKN 10 ns
Hold Time, tPH. 0 ns
Latch Enable Minimum Width, tLEN 10 ns
Setup Time, tPS 2 ns
12 - 6
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
VARIABLE GAIN AMPLIFIERS - DIGITAL - SMT
12
Absolute Maximum Ratings
RF Input Power [1] 11.5 dBm (T = +85 °C)
Digital Inputs (Reset, Shift Clock,
Latch Enable & Serial Input) -0.5V to Vdd +0.5V
Bias Voltage (Vdd) 5.6V
Collector Bias Voltage (Vcc) 5.5V
Channel Temperature 150 °C
Continuous Pdiss (T = 85 °C)
(derate 9 mW/°C above 85 °C) [1] 0.593 W
Thermal Resistance 110 °C/W
Storage Temperature -65 to +150 °C
Operating Temperature -40 to +85 °C
[1] At max gain settling
ELECTROSTATIC SENSITIVE DEVICE
OBSERVE HANDLING PRECAUTIONS
Bias Voltage
PUP Truth Table
Power-Up States
Vdd (V) Idd (Typ.) (mA)
+5 2
Vs (V) Is (mA)
+5 88
Control Voltage Input Gain
Relative to
Maximum
Gain
D5 D4 D3 D2 D1 D0
High High High High High High 0 dB
High High High High High Low -0.5 dB
High High High High Low High -1 dB
High High High Low High High -2 dB
High High Low High High High -4 dB
High Low High High High High -8 dB
Low High High High High High -16 dB
Low Low Low Low Low Low -31.5 dB
Any combination of the above states will provide a reduction in
gain approximately equal to the sum of the bits selected.
Truth Table
If LE is set to logic LOW at power-up, the logic state of
PUP1 and PUP2 determines the power-up state of the
part per PUP truth table. If the LE is set to logic HIGH
at power-up, the logic state of D0-D5 determines the
power-up state of the part per truth table. The DVGA
latches in the desired power-up state approximately
200 ms after power-up.
Power-On Sequence
The ideal power-up sequence is: GND, Vdd, digital
inputs, RF inputs. The relative order of the digital
inputs are not important as long as they are powered
after Vdd / GND
HMC627LP5 / 627LP5E
v10.0410
0.5 dB LSB GaAs MMIC 6-BIT DIGITAL
VARIABLE GAIN AMPLIFIER, 50 MHz - 1 GHz
LE PUP1 PUP2 Gain Relative to Maximum
Gain
0 0 0 -31.5
0 1 0 -24
0 0 1 -16
0 1 1 Insertion Loss
1 X X 0 to -31.5 dB
Note: The logic state of D0 - D5 determines the
power-up state per truth table shown below when LE
is high at power-up.
Control Voltage Table
State Vdd = +3V Vdd = +5V
Low 0 to 0.5V @ <1 µA 0 to 0.8V @ <1 µA
High 2 to 3V @ <1 µA 2 to 5V @ <1 µA
12 - 7
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
VARIABLE GAIN AMPLIFIERS - DIGITAL - SMT
12
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 HITTITE APPLICATION NOTE FOR SUGGESTED
LAND PATTERN.
Part Number Package Body Material Lead Finish MSL Rating Package Marking [3]
HMC627LP5 Low Stress Injection Molded Plastic Sn/Pb Solder MSL1 [1] H627
XXXX
HMC627LP5E RoHS-compliant Low Stress Injection Molded Plastic 100% matte Sn MSL1 [2] H627
XXXX
[1] Max peak reow temperature of 235 °C
[2] Max peak reow temperature of 260 °C
[3] 4-Digit lot number XXXX
Package Information
HMC627LP5 / 627LP5E
v10.0410
0.5 dB LSB GaAs MMIC 6-BIT DIGITAL
VARIABLE GAIN AMPLIFIER, 50 MHz - 1 GHz
12 - 8
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
VARIABLE GAIN AMPLIFIERS - DIGITAL - SMT
12
Pin Number Function Description Interface Schematic
1 AMPIN
This pin is DC coupled.
An off chip DC blocking capacitor is required.
29 AMPOUT RF output and DC bias (Vcc) for the output stage of the
amplier.
2, 3, 13,
28, 30 - 32 GND These pins and package bottom
must be connected to RF/DC ground.
4, 12 ATTIN,
ATTOUT
These pins are DC coupled and matched to 50 Ohms.
Blocking capacitors are required. Select value based
on lowest frequency of operation.
5 - 10 ACG1 - ACG6
External capacitors to ground is required. Select value for
lowest frequency of operation. Place capacitor as close to
pins as possible.
11 N/C No Connection
14 SEROUT Serial input data delayed by 6 clock cycles.
15, 16 PUP2, PUP1
18 - 23 D5, D4, D3,
D2, D1, D0
24 P/S
25 CLK
26 SERIN
27 LE
17 Vdd Supply Voltage
Pin Descriptions
HMC627LP5 / 627LP5E
v10.0410
0.5 dB LSB GaAs MMIC 6-BIT DIGITAL
VARIABLE GAIN AMPLIFIER, 50 MHz - 1 GHz
12 - 9
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
VARIABLE GAIN AMPLIFIERS - DIGITAL - SMT
12
Application Circuit
Tuned Frequency 50 -350 MHz 350 - 1000 MHz
Evaluation PCB 121394 118329
C1, C6, C8 3300pF 100pF
C3, C4, C5 330pF 100pF
L1 560nH 270nH
Components for Selected Frequencies
HMC627LP5 / 627LP5E
v10.0410
0.5 dB LSB GaAs MMIC 6-BIT DIGITAL
VARIABLE GAIN AMPLIFIER, 50 MHz - 1 GHz
12 - 10
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
VARIABLE GAIN AMPLIFIERS - DIGITAL - SMT
12
Evaluation PCB
The circuit board used in the application should use
RF circuit design techniques. Signal lines should
have 50 Ohm impedance while the package ground
leads and exposed paddle should be connected
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 Hit-
tite upon request.
List of Materials for Evaluation [3]
Item Description
J1 - J2 PCB Mount SMA Connectors
J3 18 Pin DC Connector
J4 - J6 DC Pin
C1, C3 - C6, C8 Capacitor, 0402 Pkg.[3]
C2, C7. C9 100pF Capacitor. 0402 Pkg.
C11 - C12 1000 pF Capacitor, 0402 Pkg.
C14 2.2 µF Capacitor, CASE A Pkg.
R1 - R14 100 kOhm Resistor, 0402 Pkg.
R15 1.8 Ohm Resistor, 1206 Pkg.
L1 Inductor, 0603 Pkg. [3]
SW1, SW2 SPDT 4 Position DIP Switch
U1 HMC627LP5(E) Variable Gain Amplier
PCB [2] 116958 Evaluation PCB
[1] Reference this number when ordering complete evaluation PCB
[2] Circuit Board Material: Arlon 25FR, FR4
[3] Please reference Components for Selected Frequencies Table
HMC627LP5 / 627LP5E
v10.0410
0.5 dB LSB GaAs MMIC 6-BIT DIGITAL
VARIABLE GAIN AMPLIFIER, 50 MHz - 1 GHz
