Custom Design

Sample Requests

Submit Inquiry

My Subscription

Home

HMC939

1 dB LSB 5-Bit Digital Attenuator Chip, 0.1 - 40 GHz

Product Details

Data Sheet
S-Parameters
ECCN: EAR99

Quality & Reliability

Qualification Test Reports
Waffle-Pak & Gel-Pak

Press & Media

Product Press Release
Freq. (GHz) Function Loss (dB) Atten. Range (dB) IIP3 (dBm) Control Input (Vdc) Package
0.1 - 40 5-Bit Digital 3.5 1 to 31 43 0/+3 to +5V Chip

Features

• 1 dB LSB Steps to 31 dB
• Single Positive Control Line Per Bit
• ±1 dB Typical Bit Error
• High Input IP3: +43 dBm
• Die Size: 2.36 x 1.02 x 0.1 mm

Typical Applications

• Fiber Optics & Broadband Telecom
• Microwave Radio & VSAT
• Military Radios, Radar & ECM
• Space

Functional Diagram

General Description

The HMC939 die is a broadband 5-bit GaAs IC digital attenuator MMIC chip. Covering 0.1 to 40 GHz, the insertion loss is less than 5 dB typical. The attenuator bit values are 1.0 (LSB), 2, 4, 8, 16 for a total attenuation of 31 dB. Attenuation accuracy is excellent at less than ±1.0 dB typical step error with an IIP3 of +43 dBm. Five control voltage inputs, toggled between +5V and 0V, are used to select each attenuation state.