Datasheet Analog Devices HMC681A

HMC681ALP5E
v00.0113 VARIABLE GAIN AMPLIFIERS -DIGITAL -SMT 0.5 dB LSB GaAs MMIC 6-BIT DIGITAL VARIABLE GAIN
AMPLIFIER w/ SERIAL CONTROL, DC -1 GHz
Typical Applications Features The HMC681ALP5E is ideal for: +13.5 dB to +45 dB Gain Control in 0.5 dB Steps • IF & RF Applications High Output IP3: +36 dBm • Cellular/3G Infrastructure ±0.25 dB Typical Gain Step Error • WiBro / WiMAX / 4G Single +5V Supply • Microwave Radio & VSAT 32 Lead 5x5 mm SMT Package: 25 mm2 • Test Equipment and Sensors Functional Diagram The HMC681ALP5E is a digitally controlled variable
gain amplifier which operates from DC to 1 GHz,
and can be programmed to provide anywhere from
13.5 dB, to 45 dB of gain, in 0.5 dB steps. The
HMC681ALP5E delivers noise figure of 2.8 dB in its
maximum gain state, with output IP3 of up to +36
dBm in any state. This serially controlled digital VGA
incorporates off chip AC ground capacitors for near
DC operation, making it suitable for a wide variety of
RF and IF applications. The HMC681ALP5E is housed
in a RoHS compliant 5x5 mm QFN leadless package,
and provides the user with a highly integrated solution.
This functionality is also available with parallel control
as the HMC626ALP5E. Electrical Specifications, TA = +25° C, Vdd = Vs= P/S= +5V
Parameter
Gain (Maximum Gain State) Min. Typ. Max. Min. 50 -350 Max. 45 30 Units
MHz
dB 31.5 31.5 dB Input Return Loss 25 30 dB Output Return Loss 20 17 dB Gain Setting Accuracy:
(Referenced to Maximum Gain State)
All Gain States 40 Typ. …