HMC346LC3B

v06.0514

GaAs MMIC VOLTAGE-VARIABLE

ATTENUATOR, DC - 18 GHz

General Description

Features

Functional Diagram

Wide Bandwidth: DC - 18 GHz

Low Phase Shift vs. Attenuation

30dB Attenuation Range

Simplified Voltage Control

RoHS Compliant 3 x 3 mm SMT Package

Electrical Specifications, TA = +25°C, 50 Ohm system

Typical Applications

The HMC346LC3B is ideal for:

? Test Instrumentation

? Fiber Optics & Broadband_Telecom

? Microwave Radio & VSAT

? Military Radios, Radar, & ECM

The HMC346LC3B is an absorptive Voltage Variable

Attenuator (VVA) in a leadless “Pb free” RoHS

compliant SMT mount ceramic package operating from

DC - 18 GHz. It features an on-chip reference

attenuator for use with an external op-amp to provide

simple single voltage attenuation control, 0 to -3V.

The device is ideal in designs where an analog DC

control signal must control RF signal levels over a

30 dB amplitude range. The HMC346LC3B allows

the use of surface mount manufacturing techniques.

Parameter Min Typical Max Units

Insertion Loss

DC - 10 GHz

DC - 14 GHz

DC - 18 GHz

1.5

2.2

2.8

2.0

2.7

3.5

dB

dB

dB

Attenuation Range DC - 12 GHz

DC - 18 GHz

26

twenty two

30

26

dB

dB

Return Loss DC - 18 GHz 10 dB

Input Power for 0.25 dB Compression (0.5 - 18 GHz)

Min. Atten:

Atten. >2 dB:

+8

-4

dBm

dBm

Input Third Order Intercept (0.5 - 18 GHz)

(Two-tone Input Power = -8 dBm Each Tone)

Min. Atten:

Atten. >2 dB:

+25

+10

dBm

dBm

Switching Characteristics tRISE, tFALL (10/90%_RF):

tON, tOFF (50%_CTL to 10/90%_RF):

28

ns

ns