HMC742LP5E
v05.0610
0.5 dB LSB GaAs MMIC 6-BIT DIGITAL
VARIABLE GAIN AMPLIFIER, 70 MHz - 4 GHz
Typical Applications
The HMC742LP5E is ideal for:
• Cellular/3G Infrastructure
• WiBro / WiMAX / 4G
Features
-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
• Microwave Radio & VSAT
• Test Equipment and Sensors
• IF & RF Applications
0.25 dB Typical Gain Step Error
Single +5V Supply
32 Lead 5x5mm SMT Package: 25mm2
Functional Diagram
General Description
The HMC742LP5E is a digitally controlled variable
gain amplifier 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 figure 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.
12
Electrical Specifications, TA = +25° C, 50 Ohm System Vdd = +5V, Vs= +5V
Min.
Typ.
Max.
Min.
Typ.
Max.
Units
MHz
dB
Parameter
70 - 1000
500 - 4000
Gain (Maximum Gain State)
12
9
31.5
12
Gain Control Range
Input Return Loss
Output Return Loss
31.5
dB
15
14
dB
10
dB
70 MHz - 350 MHz
(0.3 + 5% of relative gain setting) Max
Gain Accuracy: (Referenced to Maximum Gain State)
All Gain States
(0.3 + 4% of relative gain setting) Max
dB
350 MHz - 1000 MHz
(0.3 + 6% of relative gain setting) Max
Output Power for 1 dB Compression
21.5
40
4
22
39
dBm
dBm
dB
Output Third Order Intercept Point
(Two-Tone Output Power= 12 dBm Each Tone)
Noise Figure (Max Gain State)
4.5
Switching Characteristics tRISE, tFall (10 / 90% RF)
tON, tOFF (Latch Enable to 10 / 90% RF)
70
170
70
170
ns
ns
Supply Current (Amplifier)
130
1.0
150
2.0
190
3.0
130
1.0
150
2.0
190
3.0
mA
mA
Supply Current (Controller) Idd
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
12 - 1