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5

5 - 210

HMC712LP3CE

GaAs MMIC VOLTAGE-VARIABLE

ATTENUATOR, 5 - 26.5 GHz

v03.0909

General Description

Features

Functional Diagram

Wide Bandwidth: 5 - 26.5 GHz

Excellent Linearity: +28 dBm Input P1dB

Wide Attenuation Range: 28 dB

Absorptive Topology

Singe or Dual Control Operation

16 Lead 3x3mm SMT Package: 9mm2

Typical Applications

The HMC712LP3CE is ideal for:

• Point-to-Point Radio

• VSAT Radio

• Test Instrumentation

• Microwave Sensors

• Military, ECM & Radar

The HMC712LP3CE is an absorptive Voltage Var-

iable Attenuator (VVA) which operates from 5 - 26.5

GHz and is ideal in designs where an analog DC

control signal must be used to control RF signal

levels over a 28 dB amplitude range. It features two

shunt-type attenuators which are controlled by two

analog voltages, Vctrl1 and Vctrl2. Optimum linearity

performance of the attenuator is achieved by first

varying Vctrl1 of the 1st attenuation stage from -3V

to 0V with Vctrl2 fixed at -3V. The control voltage of

the 2nd attenuation stage, Vctrl2, should then be

varied from -3V to 0V, with Vctrl1 fixed at 0V.

The

HMC712LP3CE is housed in a RoHS compliant

3x3 mm QFN leadless package

However, if the Vctrl1 and Vctrl2 pins are connected

together it is possible to achieve the full analog

attenuation range with only a small degradation

in

input

IP3

performance.

Applications

include

AGC circuits and temperature compensation of

multiple gain stages in microwave point-to-point and

VSAT radios.

Parameter

Min.

Typ.

Max.

Units

Insertion Loss

5 - 16 GHz

16 - 24 GHz

24 - 26.5 GHz

3.5

4.5

5.5

dB

dB

dB

Attenuation Range

28

dB

Input Return Loss

12

dB

Output Return Loss

10

dB

Input Power for 1 dB Compression (any attenuation)

28

dBm

Input Third Order Intercept

(Two-tone Input Power = 10 dBm Each Tone)

32

dBm