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HMC470LP3 / HMC470LP3E

1dB LSB 5-Bit Digital Attenuator SMT, DC - 3 GHz

Product Details

Data Sheet
Application Notes
Package Layout
S-Parameters
Tape & Reel
ECCN: EAR99

Quality & Reliability

Environmental Data Sheet
Qualification Test Reports

Press & Media

Designer & Eval Kits
Product Press Release
Freq. (GHz) Function Loss (dB) Atten. Range (dB) IIP3 (dBm) Control Input (Vdc) Package
DC - 3 5-Bit Digital 1.3 1 to 31 45 TTL / CMOS LP3

Features

• 1 dB LSB Steps to 31 dB
• Single Control Line Per Bit
• TTL/CMOS Compatible Control
• ±0.3 dB Typical Step Error
• Single +5V Supply
• 16 Lead 3x3mm QFN Package: 9 mm²
• Included in the
HMC-DK004 Designer’s Kit

Typical Applications

• Cellular; UMTS/3G Infrastructure
• ISM, MMDS, WLAN, WiMAX
• Microwave Radio & VSAT
• Test Equipment and Sensors

Functional Diagram

HMC470LP3 Functional Diagram

General Description

The HMC470LP3(E) is a broadband 5-bit GaAs IC digital attenuator in low cost lead-less 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 GHz, the insertion loss is less than 1.5 dB typical.


The attenuator bit values are 1 (LSB), 2, 4, 8, and 16 dB for a total attenuation of 31 dB. Attenuation accuracy is excellent at ±0.3 dB typical step error with an IIP3 of +45 dBm. Five TTL/CMOS control inputs are used to select each attenuation state. A single Vdd bias of +5V is required.