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HMC472LP4 / HMC472LP4E

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

Product Details

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

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Replacement Product(s)

HMC472ALP4E

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

Features

• 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
• ISM, MMDS, WLAN, WiMAX
• 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.