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
HMC742HFLP5E
v00.0 211t
Functional Diagram
Electrical Specications, TA = +25° C, 50 Ohm System Vdd = +5V, Vs= +5V
The HMC742HFLP5E is ideal for:
Cellular/3G Infrastructure
WiBro / WiMAX / 4G
Microwave Radio & VSAT
Test Equipment and Sensors
IF & RF Applications
-19 to 12.5 dB Gain Control in 0.5 dB Steps
Power-up State Selection
High Output IP3: +39 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 HMC742HFLP5E is a digitally controlled variable
gain amplier which operates from 0.5 GHz to 4
GHz, and can be programmed to provide from -19
dB attenuation, to 12.5 dB of gain, in 0.5 dB steps.
The HMC742HFLP5E delivers noise gure of 4 dB
in its maximum gain state, with output IP3 of up to
+39 dBm in any state. The dual mode gain control
interface accepts either a three-wire serial input or a 6
bit parallel word. The HMC742HFLP5E also features a
user selectable power up state and a serial output for
cascading other serially controlled Hittite components.
The HMC742HFLP5E is housed in an RoHS compliant
5x5 mm QFN leadless package, and requires minimal
external components.
Parameter Min. Typ. Max. Min. Typ. Max. Units
Frequency Range 500 - 2700 2700-4000 MHz
Gain (Maximum Gain State) 12.5 9dB
Gain Control Range 31.5 31.5 dB
Input Return Loss 14 12 dB
Output Return Loss 10 12 dB
Gain Accuracy: (Referenced to Maximum Gain State)
All Gain States ± (0.3 + 4% of relative gain setting) Max dB
Output Power for 1 dB Compression 21 22 dBm
Output Third Order Intercept Point
(Two-Tone Output Power= 12 dBm Each Tone) 39 38 dBm
Noise Figure (Max Gain State) 44.5 dB
Switching Characteristics tRISE, tFall (10 / 90% RF) 30
60
30
60
ns
ns
tON, tOFF (Latch Enable to 10 / 90% RF)
Supply Current (Amplier) 130 150 175 130 150 175 mA
Supply Current (Controller) Idd 0.12 0.25 0.12 0.25 mA
Typical Applications Features
General Description
0.5 dB LSB GaAs MMIC 6-BIT DIGITAL
VARIABLE GAIN AMPLIFIER, 0.5 - 4 GHz
Designer’s Kit
Available
OBSOLETE
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other
rights of third parties that may result from its use. Specifications subject to change without notice. No
license is granted by implication or otherwise under any patent or patent rights of Analog Devices.
Trademarks and registered trademarks are the property of their respective owners.
For price, delivery, and to place orders: Analog Devices, Inc.,
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106
Phone: 781-329-4700 • Order online at www.analog.com
Application Support: Phone: 1-800-ANALOG-D
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
HMC742HFLP5E
v00.0 211
0.5 dB LSB GaAs MMIC 6-BIT DIGITAL
VARIABLE GAIN AMPLIFIER, 0.5 - 4 GHz
Maximum Gain vs. Frequency
Input Return Loss Output Return Loss
Relative Gain Setting
(Referenced to Maximum Gain State)
Bit Error vs. Frequency Bit Error vs. Attenuation State
0
4
8
12
16
0 0.5 1 1.5 2 2.5 3 3.5 4 4.5
+25 C
+85 C
-40 C
GAIN (dB)
FREQUENCY (GHz)
-40
-30
-20
-10
0
0 0.5 1 1.5 2 2.5 3 3.5 4 4.5
RELATIVE GAIN (dB)
FREQUENCY (GHz)
31.5dB
16dB
8dB
-40
-30
-20
-10
0
0 0.5 1 1.5 2 2.5 3 3.5 4 4.5
RETURN LOSS (dB)
FREQUENCY (GHz)
0dB
-40
-30
-20
-10
0
0 0.5 1 1.5 2 2.5 3 3.5 4 4.5
RETURN LOSS (dB)
FREQUENCY (GHz)
-2
-1
0
1
2
3
4
0 0.5 1 1.5 2 2.5 3 3.5 4 4.5
BIT ERROR (dB)
FREQUENCY (GHz)
31.5dB 16dB
-1.5
-1
-0.5
0
0.5
1
1.5
0 4 8 12 16 20 24 28 32
BIT ERROR (dB)
ATTENUATION STATE (dB)
0.7 GHz
2.0 GHz
4.0 GHz
3.0 GHz
OBSOLETE
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other
rights of third parties that may result from its use. Specifications subject to change without notice. No
license is granted by implication or otherwise under any patent or patent rights of Analog Devices.
Trademarks and registered trademarks are the property of their respective owners.
For price, delivery, and to place orders: Analog Devices, Inc.,
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106
Phone: 781-329-4700 • Order online at www.analog.com
Application Support: Phone: 1-800-ANALOG-D
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
HMC742HFLP5E
v00.0 211
0.5 dB LSB GaAs MMIC 6-BIT DIGITAL
VARIABLE GAIN AMPLIFIER, 0.5 - 4 GHz
Relative Phase vs. Frequency
(Referenced to Maximum Gain State) Step Attenuation vs. Attenuation State
Output P1dB vs. Temperature
Psat vs. Temperature Output IP3 vs. Temperature
Noise Figure vs. Frequency [1]
[1] Max Gain State
-30
-20
-10
0
10
20
30
40
0 0.5 1 1.5 2 2.5 3 3.5 4 4.5
RELATIVE PHASE (DEG)
FREQUENCY (GHz)
31.5dB 16dB
8dB
-0.5
0
0.5
1
1.5
0 4 8 12 16 20 24 28 32
0.7 GHz
2.0 GHz
3.0 GHz
4.0 GHz
STEP ATTENUATION (dB)
ATTENUATION STATE (dB)
0
2
4
6
8
0 0.5 1 1.5 2 2.5 3 3.5 4 4.5
+25 C
+85 C
-40 C
NOISE FIGURE (dB)
FREQUENCY (GHz)
8
13
18
23
28
0 0.5 1 1.5 2 2.5 3 3.5 4 4.5
+25 C
+85 C
-40 C
P1dB (dBm)
FREQUENCY (GHz)
8
13
18
23
28
0 0.5 1 1.5 2 2.5 3 3.5 4 4.5
+25 C
+85 C
-40 C
Psat (dBm)
FREQUENCY (GHz)
20
25
30
35
40
45
50
0 0.5 1 1.5 2 2.5 3 3.5 4 4.5
+25 C
+85 C
-40 C
IP3 (dBm)
FREQUENCY (GHz)
OBSOLETE
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other
rights of third parties that may result from its use. Specifications subject to change without notice. No
license is granted by implication or otherwise under any patent or patent rights of Analog Devices.
Trademarks and registered trademarks are the property of their respective owners.
For price, delivery, and to place orders: Analog Devices, Inc.,
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106
Phone: 781-329-4700 • Order online at www.analog.com
Application Support: Phone: 1-800-ANALOG-D
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
HMC742HFLP5E
v00.0 211
0.5 dB LSB GaAs MMIC 6-BIT DIGITAL
VARIABLE GAIN AMPLIFIER, 0.5 - 4 GHz
Serial Control Interface
Parallel Mode
(Direct Parallel Mode & Latched Parallel Mode)
The HMC742HFLP5E contains a 3-wire SPI compatible digital interface (SERIN, CLK, LE). The serial control interrface
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 are 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 the input register is loaded with
parallel digital inputs (D0-D5). When LE is high, 6-bit parallel data changes the state of the part per truth table.
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 D0-D5 directly. The LE (Latch
Enable) must be at a logic high at all times to control the attenuator in this manner.
Latched Parallel Mode - The attenuation state is selected using the control voltage inputs D0-D5 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)
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
OBSOLETE
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other
rights of third parties that may result from its use. Specifications subject to change without notice. No
license is granted by implication or otherwise under any patent or patent rights of Analog Devices.
Trademarks and registered trademarks are the property of their respective owners.
For price, delivery, and to place orders: Analog Devices, Inc.,
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106
Phone: 781-329-4700 • Order online at www.analog.com
Application Support: Phone: 1-800-ANALOG-D
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
Absolute Maximum Ratings
RF Input Power at Max Gain [1] 17.5 dBm (T = +85 °C)
Digital Inputs (LE, SERIN, CLK, P/S,
DO-D5, PUP1, PUP2) -0.5 to Vdd +0.5V
Controller Bias Voltage (Vdd) 5.6V
Amplier Bias Voltage (Vcc) 5.5V
Channel Temperature 175 °C
Continuous Pdiss (T = 85 °C)
(derate 13.3 mW/°C above 85 °C) [2] 1.2 W
Thermal Resistance [3] 75.6 °C/W
Storage Temperature -65 to +150 °C
Operating Temperature -40 to +85 °C
ESD Sensitivity (HBM) Class 1A
[1] The maximum RF input power increases by the same amount
the gain is reduced. The maximum input power at any state is no
more than 28 dBm.
[2] This value does not include the RF power dissipation in the
attenuator. The loss in the attenuator depends on the state of
the attenuator. The loss in the attenuator should be included to
determine the total power dissipation in the part.
[3] This value does not include the RF power dissipation in the
attenuator. The thermal resistance at different states of the
attenuator can be determined based on note [2]
ELECTROSTATIC SENSITIVE DEVICE
OBSERVE HANDLING PRECAUTIONS
Bias Voltage
PUP Truth Table
LE PUP1 PUP2 Gain Relative to Maximum
Gain
000 -31.5
010 -24
001 -16
011 Insertion Loss
1X 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.
Power-Up States
Vdd (V) Idd (Typ.) (mA)
+5.0 0.12
Vs (V) Is (mA)
+5.0 150
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
HMC742HFLP5E
v00.0 211
0.5 dB LSB GaAs MMIC 6-BIT DIGITAL
VARIABLE GAIN AMPLIFIER, 0.5 - 4 GHz
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
OBSOLETE
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other
rights of third parties that may result from its use. Specifications subject to change without notice. No
license is granted by implication or otherwise under any patent or patent rights of Analog Devices.
Trademarks and registered trademarks are the property of their respective owners.
For price, delivery, and to place orders: Analog Devices, Inc.,
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106
Phone: 781-329-4700 • Order online at www.analog.com
Application Support: Phone: 1-800-ANALOG-D
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
HMC742HFLP5E
v00.0 211
0.5 dB LSB GaAs MMIC 6-BIT DIGITAL
VARIABLE GAIN AMPLIFIER, 0.5 - 4 GHz
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 [1]
HMC742HFLP5E RoHS-compliant Low Stress Injection Molded Plastic 100% matte Sn MSL1 [2] H742HF
XXXX
[1] 4-Digit lot number XXXX
[2] Max peak reow temperature of 260 °C
Package Information
OBSOLETE
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other
rights of third parties that may result from its use. Specifications subject to change without notice. No
license is granted by implication or otherwise under any patent or patent rights of Analog Devices.
Trademarks and registered trademarks are the property of their respective owners.
For price, delivery, and to place orders: Analog Devices, Inc.,
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106
Phone: 781-329-4700 • Order online at www.analog.com
Application Support: Phone: 1-800-ANALOG-D
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
Pin Number Function Description Interface Schematic
1AMPIN
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
amplier.
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 - 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
HMC742HFLP5E
v00.0 211
0.5 dB LSB GaAs MMIC 6-BIT DIGITAL
VARIABLE GAIN AMPLIFIER, 0.5 - 4 GHz
OBSOLETE
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other
rights of third parties that may result from its use. Specifications subject to change without notice. No
license is granted by implication or otherwise under any patent or patent rights of Analog Devices.
Trademarks and registered trademarks are the property of their respective owners.
For price, delivery, and to place orders: Analog Devices, Inc.,
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106
Phone: 781-329-4700 • Order online at www.analog.com
Application Support: Phone: 1-800-ANALOG-D
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
HMC742HFLP5E
v00.0 211
0.5 dB LSB GaAs MMIC 6-BIT DIGITAL
VARIABLE GAIN AMPLIFIER, 0.5 - 4 GHz
Application Circuit
OBSOLETE
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other
rights of third parties that may result from its use. Specifications subject to change without notice. No
license is granted by implication or otherwise under any patent or patent rights of Analog Devices.
Trademarks and registered trademarks are the property of their respective owners.
For price, delivery, and to place orders: Analog Devices, Inc.,
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106
Phone: 781-329-4700 • Order online at www.analog.com
Application Support: Phone: 1-800-ANALOG-D
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
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 PCB 124695[1]
Item Description
J1 - J2 PCB Mount SMA Connectors
J3 18 Pin DC Connector
J4 - J6 DC Pin
C1, C6, C8, C9 330pF Capacitor, 0402 Pkg.
C7 100pF Capacitor. 0402 Pkg.
C11 1000 pF Capacitor, 0402 Pkg.
C12 1000 pF Capacitor, 0603 Pkg.
C14 2.2 µF Capacitor, CASE A Pkg.
R1 - R14 100 kOhm Resistor, 0402 Pkg.
R15 0 Ohm Resistor, 1206 Pkg.
L1 47 nH Inductor, 0603 Pkg.
SW1, SW2 SPDT 4 Position DIP Switch
U1 HMC742HFLP5E Variable Gain Amplier
PCB [2] 116958 Evaluation PCB
[1] Reference this number when ordering evaluation PCB
[2] Circuit Board Material: Arlon 25FR
HMC742HFLP5E
v00.0 211
0.5 dB LSB GaAs MMIC 6-BIT DIGITAL
VARIABLE GAIN AMPLIFIER, 0.5 - 4 GHz
OBSOLETE
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other
rights of third parties that may result from its use. Specifications subject to change without notice. No
license is granted by implication or otherwise under any patent or patent rights of Analog Devices.
Trademarks and registered trademarks are the property of their respective owners.
For price, delivery, and to place orders: Analog Devices, Inc.,
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106
Phone: 781-329-4700 • Order online at www.analog.com
Application Support: Phone: 1-800-ANALOG-D
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
Notes:
HMC742HFLP5E
v00.0 211
0.5 dB LSB GaAs MMIC 6-BIT DIGITAL
VARIABLE GAIN AMPLIFIER, 0.5 - 4 GHz
OBSOLETE
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other
rights of third parties that may result from its use. Specifications subject to change without notice. No
license is granted by implication or otherwise under any patent or patent rights of Analog Devices.
Trademarks and registered trademarks are the property of their respective owners.
For price, delivery, and to place orders: Analog Devices, Inc.,
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106
Phone: 781-329-4700 • Order online at www.analog.com
Application Support: Phone: 1-800-ANALOG-D