HMC424

Features:

·0.5 dB LSB Steps to 31.5 dB
·Single Control Line Per Bit
·+/- 0.5 dB Typical Bit Error
·Die Size: 0.85 mm x 1.45 mm x 0.1 mm


Application

The HMC424 is ideal for:
• Fiber Optics & Broadband Telecom
• Microwave Radio & VSAT
• Military Radios, Radar, & ECM
• Space Applications


Specifications

Control Voltage (V1 to V6)	Vee - 0.5 Vdc
Bias Voltage (Vee)	-7.0 Vdc
Channel Temperature	150
Thermal Resistance	140 /W
Storage Temperature	-65 to + 150
Operating Temperature	-55 to +85
RF Input Power (0.5 - 13.0 GHz)	+25 dBm

Description

The HMC424 die is a broadband 6-bit GaAs IC digital attenuator MMIC chip. Covering DC to 13 GHz, the insertion loss is less then 4 dB typical. The attenuator bit values are 0.5 (LSB), 1, 2, 4, 8, and 16 dB for a total attenuation of 31.5 dB. Attenuation accuracy is excellent at ± 0.5 dB typical step error with an IIP3 of +32 dBm. Six control voltage inputs, toggled between 0 and -5V, are used to select each attenuation state of HMC424. A single Vee bias of -5V allows operation at frequencies down to DC.