ALM-38140
50MHz – 4GHz PIN Diode Variable Attenuator Module
Data Sheet
Description
Avago Technologies’ ALM-38140 is a fully matched
wideband variable attenuator module with high linearity
performance and high dynamic range. The high dynamic
range and low phase shift can be achieved with only one
external inductor place between Linput and Loutput.
ALM-38140 is a fully integrated solution using Avago
Technologies’ low distortion silicon PIN diodes housed in
a miniature 3.8 x 3.8 x 1.0 mm
3
MCOB (Multiple-Chips-On-
Board) package.
This variable attenuator module is easily operated with
a constant voltage, Vsupply = 2.7V and a control voltage,
Vcontrol = 1 – 5V. No external biasing components
needed.
ALM-38140 is ideal for gain control in RF amplifier
circuits.
Features
•
Fully integrated module
•
High dynamic range
•
Excellent Input IP3 performance
•
High Input P1dB compression
•
Low phase shift performance
•
Tape-and-Reel packaging option available
Specifications
Typical Performance at 1.9GHz
•
Attenuation : 39dB
•
Insertion Loss : 3.2dB
•
Input IP3 : 50dBm
•
Input P1dB : > 30dBm
Package Marking
Vcontrol
Loutput
Linput
Applications
•
Broadband system applications; such as CATV, WCDMA,
VSAT, WIMAX, Cellular base station.
•
General purpose voltage controlled attenuator for low
current applications.
•
Temperature compensation circuitry
RF 2
GND
RF 1
38140
WWYY
XXXX
•
Automatic Gain Control
Vsupply
Top View
Bottom View
Note:
Package marking provides orientation and identification
“38140” = Device Part Number
“WWYY” = Work week and year of manufacture
“XXXX” = Last 4 digit of assembly lot number
* RF1 and RF2 can be used either as RF input or RF output as they are
symmetrical.
Attention: Observe precautions for
handling electrostatic sensitive devices.
ESD Machine Model = 300 V
ESD Human Body Model = 900 V
Refer to Avago Application Note A004R:
Electrostatic Discharge, Damage and Control.
AVAGO [ AVAGO TECHNOLOGIES LIMITED ]
