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HMC542ALP4 / HMC542ALP4E

0.5dB LSB 6-Bit Digital Attenuator SMT, DC - 4 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
Freq. (GHz) Function Loss (dB) Atten. Range (dB) IIP3 (dBm) Control Input (Vdc) Package
DC - 4 6-Bit Digital, Serial Control 1.2 0.5 to 31.5 45 Serial / CMOS LP4

Features

• 0.5 dB LSB Steps to 31.5 dB
• TTL/CMOS Compatible
   Serial Data Interface
• SPI Compatible Serial Output
• ±0.25 dB Typical Step Error
• Single +5V Supply
• 4x4 mm SMT Package

Typical Applications

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

Functional Diagram

HMC542LP4 Functional Diagram

General Description

The HMC542ALP4(E) is a broadband 6-bit GaAs IC digital attenuator with CMOS compatible serial to parallel drivers in a low cost leadless surface mount package. This serial control 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 4 GHz, the insertion loss is less than 1.5 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 bit serial control words are used to select each attenuation state. A single Vdd bias of +5V is required.


The HMC542ALP4(E) is a replacement for the HMC542LP4(E)