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
HMC742LP5E
v05.0610
Functional Diagram
Electrical Specications, TA = +25° C, 50 Ohm System Vdd = +5V, Vs= +5V
The HMC742LP5E is ideal for:
• Cellular/3G Infrastructure
• WiBro / WiMAX / 4G
• Microwave Radio & VSAT
• Test Equipment and Sensors
• IF & RF Applications
-19.5 to 12 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 HMC742LP5E is a digitally controlled variable
gain amplier which operates from 70 MHz to 4
GHz, and can be programmed to provide from -19.5
dB attenuation, to 12 dB of gain, in 0.5 dB steps.
The HMC742LP5E 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 HMC742LP5E also features a
user selectable power up state and a serial output for
cascading other serially controlled Hittite components.
The HMC742LP5E is housed in an RoHS compliant
5x5 mm QFN leadless package, and requires minimal
external components.
Parameter Min. Typ. Max. Min. Typ. Max. Units
70 - 1000 500 - 4000 MHz
Gain (Maximum Gain State) 12 9 dB
Gain Control Range 31.5 31.5 dB
Input Return Loss 15 12 dB
Output Return Loss 14 10 dB
Gain Accuracy: (Referenced to Maximum Gain State)
All Gain States
70 MHz - 350 MHz
± (0.3 + 5% of relative gain setting) Max
350 MHz - 1000 MHz
± (0.3 + 6% of relative gain setting) Max
± (0.3 + 4% of relative gain setting) Max dB
Output Power for 1 dB Compression 21.5 22 dBm
Output Third Order Intercept Point
(Two-Tone Output Power= 12 dBm Each Tone) 40 39 dBm
Noise Figure (Max Gain State) 4 4.5 dB
Switching Characteristics tRISE, tFall (10 / 90% RF) 70
170
70
170
ns
ns
tON, tOFF (Latch Enable to 10 / 90% RF)
Supply Current (Amplier) 130 150 190 130 150 190 mA
Supply Current (Controller) Idd 1.0 2.0 3.0 1.0 2.0 3.0 mA
Typical Applications Features
General Description
0.5 dB LSB GaAs MMIC 6-BIT DIGITAL
VARIABLE GAIN AMPLIFIER, 70 MHz - 4 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
HMC742LP5E
v05.0610
0.5 dB LSB GaAs MMIC 6-BIT DIGITAL
VARIABLE GAIN AMPLIFIER, 70 MHz - 4 GHz
Input Return Loss
Relative Gain Setting
(Referenced to Maximum Gain State)
Maximum Gain vs. Temperature
Output Return Loss
Bit Error vs. Frequency Bit Error vs. Relative Gain
70 to 1000 MHz Tuning
5
7
9
11
13
15
17
0 0.2 0.4 0.6 0.8 1
+25 C
+85 C
-40 C
GAIN (dB)
FREQUENCY (GHz)
-40
-30
-20
-10
0
0 0.2 0.4 0.6 0.8 1
RETURN LOSS (dB)
FREQUENCY (GHz)
16dB
31.5dB
0dB
-40
-30
-20
-10
0
0 0.2 0.4 0.6 0.8 1
RETURN LOSS (dB)
FREQUENCY (GHz)
0dB
31.5dB
-40
-30
-20
-10
0
0 0.2 0.4 0.6 0.8 1
RELATIVE GAIN (dB)
FREQUENCY (GHz)
8dB 16dB
31.5dB
-2
-1
0
1
2
3
4
0 0.2 0.4 0.6 0.8 1
BIT ERROR (dB)
FREQUENCY (GHz)
31.5dB
16dB
-1
0
1
2
3
0 8 16 24 32
BIT ERROR (dB)
RELATIVE GAIN SETTING (dB)
0.5, 0.7, 0.9GHz
0.1, 0.3GHz
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
HMC742LP5E
v05.0610
0.5 dB LSB GaAs MMIC 6-BIT DIGITAL
VARIABLE GAIN AMPLIFIER, 70 MHz - 4 GHz
Relative Phase vs. Frequency Step Error vs. Frequency
Noise Figure vs. Temperature [1] Output P1dB vs. Temperature
Output IP3 vs. TemperaturePsat vs. Temperature
70 to 1000 MHz Tuning
[1] Max Gain State
-20
-10
0
10
20
0 0.2 0.4 0.6 0.8 1
RELATIVE PHASE (DEG)
FREQUENCY (GHz)
31.5dB 8, 16dB
0, 0.5, 1, 2, 4dB
-1
-0.5
0
0.5
1
0 0.2 0.4 0.6 0.8 1
STEP ERROR (dB)
FREQUENCY (GHz)
2, 4dB
0.5, 8, 16dB
0
2
4
6
8
0 0.2 0.4 0.6 0.8 1
+25 C
+85 C
-40 C
NOISE FIGURE (dB)
FREQUENCY (GHz)
18
19
20
21
22
23
24
0 0.2 0.4 0.6 0.8 1
+25 C
+85 C
-40 C
P1dB (dBm)
FREQUENCY (GHz)
12
16
20
24
28
0 0.2 0.4 0.6 0.8 1
+25 C
+85 C
-40 C
Psat (dBm)
FREQUENCY (GHz)
32
36
40
44
48
0 0.2 0.4 0.6 0.8 1
+25 C
+85 C
-40 C
IP3 (dBm)
FREQUENCY (GHz)
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
HMC742LP5E
v05.0610
0.5 dB LSB GaAs MMIC 6-BIT DIGITAL
VARIABLE GAIN AMPLIFIER, 70 MHz - 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. Relative Gain
0.5 to 4.0 GHz Tuning
0
4
8
12
16
0.5 1 1.5 2 2.5 3 3.5 4
+25 C
+85 C
-40 C
GAIN(dB)
FREQUENCY (GHz)
-40
-30
-20
-10
0
0.5 1 1.5 2 2.5 3 3.5 4
RELATIVE GAIN(dB)
FREQUENCY (GHz)
31.5dB
16dB
8dB
-40
-30
-20
-10
0
0.5 1 1.5 2 2.5 3 3.5 4
RETURN LOSS (dB)
FREQUENCY (GHz)
4dB
16dB
31.5dB
0dB
-40
-30
-20
-10
0
0.5 1 1.5 2 2.5 3 3.5 4
RETURN LOSS (dB)
FREQUENCY (GHz)
31.5dB
0dB
-2
-1
0
1
2
3
4
0.5 1 1.5 2 2.5 3 3.5 4
BIT ERROR (dB)
FREQUENCY (GHz)
1dB
31.5dB 8dB
-1
0
1
2
3
0 4 8 12 16 20 24 28 32
BIT ERROR (dB)
RELATIVE GAIN STATE (dB)
1.0, 4.0GHz
2.0, 3.0GHz
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
HMC742LP5E
v05.0610
0.5 dB LSB GaAs MMIC 6-BIT DIGITAL
VARIABLE GAIN AMPLIFIER, 70 MHz - 4 GHz
Relative Phase vs. Frequency Step Error vs. Frequency
Output P1dB vs. Temperature
Psat vs. Temperature Output IP3 vs. Temperature
Noise Figure vs. Frequency [1]
0.5 to 4.0 GHz Tuning
[1] Max Gain State
-30
-20
-10
0
10
20
30
0.5 1 1.5 2 2.5 3 3.5 4
RELATIVE PHASE (DEG)
FREQUENCY (GHz)
8dB
31.5dB 16dB
8dB
-1
-0.5
0
0.5
1
0.5 1 1.5 2 2.5 3 3.5 4
STEP ERROR (dB)
FREQUENCY (GHz)
16dB
0.5, 31.5dB
4, 8dB
0
2
4
6
8
0.5 1 1.5 2 2.5 3 3.5 4
+25 C
+85 C
-40 C
NOISE FIGURE (dB)
FREQUENCY (GHz)
8
13
18
23
28
0.5 1 1.5 2 2.5 3 3.5 4
+25 C
+85 C
-40 C
P1dB (dBm)
FREQUENCY (GHz)
8
13
18
23
28
33
0.5 1 1.5 2 2.5 3 3.5 4
+25 C
+85 C
-40 C
Psat (dBm)
FREQUENCY (GHz)
20
25
30
35
40
45
50
0.5 1 1.5 2 2.5 3 3.5 4
+25 C
+85 C
-40 C
IP3 (dBm)
FREQUENCY (GHz)
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
HMC742LP5E
v05.0610
0.5 dB LSB GaAs MMIC 6-BIT DIGITAL
VARIABLE GAIN AMPLIFIER, 70 MHz - 4 GHz
Serial Control Interface
Parallel Mode
(Direct Parallel Mode & Latched Parallel Mode)
The HMC742LP5E 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
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
Absolute Maximum Ratings
RF Input Power at Max Gain [1] 17.5 dBm (T = +85 °C)
Digital Inputs (Reset, Shift Clock,
Latch Enable & Serial Input) -0.5 to Vdd +0.5V
Bias Voltage (Vdd) 5.6V
Collector 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
[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
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.
Power-Up States
Vdd (V) Idd (Typ.) (mA)
+5.0 2
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
HMC742LP5E
v05.0610
0.5 dB LSB GaAs MMIC 6-BIT DIGITAL
VARIABLE GAIN AMPLIFIER, 70 MHz - 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
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
HMC742LP5E
v05.0610
0.5 dB LSB GaAs MMIC 6-BIT DIGITAL
VARIABLE GAIN AMPLIFIER, 70 MHz - 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]
HMC742LP5E RoHS-compliant Low Stress Injection Molded Plastic 100% matte Sn MSL1 [2] H742
XXXX
[1] 4-Digit lot number XXXX
[2] Max peak reow temperature of 260 °C
Package Information
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
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
HMC742LP5E
v05.0610
0.5 dB LSB GaAs MMIC 6-BIT DIGITAL
VARIABLE GAIN AMPLIFIER, 70 MHz - 4 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
HMC742LP5E
v05.0610
0.5 dB LSB GaAs MMIC 6-BIT DIGITAL
VARIABLE GAIN AMPLIFIER, 70 MHz - 4 GHz
Application Circuit
Tuned Frequency 70 - 1000 MHz 500 - 4000 MHz
Evaluation PCB 124694 [1] 124695 [1]
C1 ,C6, C8 (pF) 10000 330
C3, C4 (pF) 1000 100
C2, C5 (pF) 1000 N/A
C9 (pF) 1000 100
C12 (pF) 5600 1000
L1 (nH) 560 47
[1] Reference this number when ordering complete evaluation PCB
Components for Selected Frequencies
12 - 11
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 [2]
Item Description
J1 - J2 PCB Mount SMA Connectors
J3 18 Pin DC Connector
J4 - J6 DC Pin
C1 - C6, C8, C9 Capacitor, 0402 Pkg. [2]
C7 100pF Capacitor. 0402 Pkg.
C11 1000 pF Capacitor, 0402 Pkg.
C12 Capacitor, 0603 Pkg. [2]
C14 2.2 µF Capacitor, CASE A Pkg.
R1 - R14 100 kOhm Resistor, 0402 Pkg.
R15 0 Ohm Resistor, 1206 Pkg.
L1 Inductor, 0603 Pkg. [2]
SW1, SW2 SPDT 4 Position DIP Switch
U1 HMC742LP5E Variable Gain Amplier
PCB [1] 116958 Evaluation PCB
[1] Circuit Board Material: Arlon 25FR, FR4
[2] Please reference Components for Selected Frequencies Table
shown on previous page.
HMC742LP5E
v05.0610
0.5 dB LSB GaAs MMIC 6-BIT DIGITAL
VARIABLE GAIN AMPLIFIER, 70 MHz - 4 GHz
12 - 12
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:
HMC742LP5E
v05.0610
0.5 dB LSB GaAs MMIC 6-BIT DIGITAL
VARIABLE GAIN AMPLIFIER, 70 MHz - 4 GHz
