Custom Design

Sample Requests

Submit Inquiry

My Subscription

HMC472LP4 / HMC472LP4E

0.5dB LSB 6-Bit Digital Attenuator SMT, DC - 3.8 GHz

Product Details

Data Sheet
Application Notes
Package Layout
Tape & Reel

Quality & Reliability

Environmental Data Sheet
Qualification Test Reports

Press & Media

Designer & Eval Kits
Product Press Release

Life Cycle Status

Last Time Buy

Product Change Notification

Replacement Product(s)


Freq. (GHz) Function Loss (dB) Atten. Range (dB) IIP3 (dBm) Control Input (Vdc) Package
DC - 3.8 6-Bit Digital 1.5 0.5 to 31.5 45 TTL / CMOS LP4


• 0.5 dB LSB Steps to 31.5 dB
• Single Control Line Per Bit
• TTL/CMOS Compatible Control
• ±0.25 dB Typical Step Error
• Single +5V Supply
• 24 Lead 4x4 mm QFN
   Package: 16 mm²

• Included in the
HMC-DK004 Designer’s Kit

Typical Applications

• Cellular; UMTS/3G Infrastructure
• Microwave Radio & VSAT
• Test Equipment and Sensors

Functional Diagram

HMC472LP4 Functional Diagram

General Description

The HMC472LP4(E) is a broadband 6-bit GaAs IC digital attenuator in a low cost leadless surface mount package. This single positive control line per bit digital attenuator incorporates off chip AC ground capacitors for near DC operation, making it suitable for a wide variety of RF and IF applications. Covering DC to 3.8 GHz, the insertion loss is less than 2 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 ±0.25 dB typical step error with an IIP3 of +45 dBm. Six TTL/CMOS control inputs are used to select each attenuation state. A single Vdd bias of +5V is required.