INDUSTRY'S FIRST DIGITALLY CONTROLLED DUAL VGAS: 2× THE FUNCTIONALITY; 1/3 THE SPACE.

Precise gain control, high IP3, low noise–for a wide variety of receiver applications

Why use two individual VGAs when the Analog Devices AD8376 digital VGA gives you dual channels in 67% less space? Analog Devices' industry-leading solution offers 50 dBm output IP3 on just 130 mA of current per channel, providing unparalleled linearity and minimizing distortion. You can maximize signal level prior to the ADC across a broad choice of IFs up to 400 MHz, while reducing your footprint with the AD8376's compact, 5 mm × 5 mm 32-lead LFCSP package. For applications requiring additional gain control range, such as upstream CMTS receivers, ADI's AD8372 VGA offers 41 dB of range in 1 dB steps. more ...

 

Featured Products

Dual- and Single-Channel Digital VGAs
Part # -3 dB BW (MHz) Gain Low End (dB) Gain High End (dB) No. of Channels Noise Figure (dB) Supply Current @
5 V (mA)
Gain Accuracy (dB) OIP3 (dBm) Package Price @ 1K ($U.S.)
AD8376 690 -4 20 2 8.7 260 ±0.2 50 LFCSP 6.49
AD8372 130 -9 32 2 7.8 212 ±0.2 35 LFCSP 6.50
AD8375 690 -4 20 1 8 130 ±0.2 50 LFCSP 4.49
AD8370 700 +25 34 1 7 78 - 35 TSSOP 4.20
AD8369 600 -5 40 1 7 37 ±0.5 19.5 TSSOP 4.20

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Additional Industry-Leading Technology for Receiver Designs:

A/D Converters

Clock Generation and Distribution

Direct Digital Synthesis (DDS)

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Online Simulation and Design Tools:

ADIsimADC: ADC Simulation and Evaluation Tool

ADIsimDDS: Direct Digital Synthesis Simulation and Evaluation Tool

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Press Releases:

Analog Devices Introduces RF Transceivers for Mobile WiMAX Applications, September 2007
The AD9354 and AD9355 RF-to-baseband WiMAX transceivers enable thumb-sized WiMAX terminals, while significantly reducing power and simplifying product design.


1 GSPS Direct Digital Synthesizer With Spur Reduction Channels Offers Improved Dynamic Range, June 2007
New low-power DDS core allows for multiple spur-reduction channels, resulting in improved wideband spurious-free dynamic range (SFDR) performance with output signals up to 400 MHz while consuming less than 1000 mW.


High-Linearity, Fine-Gain-Step, Digitally-Programmable VGAs Enable Next-Generation Base Stations, March 2007
AD8375 and AD8376 digitally-programmable VGAs provide 1-dB step size, high linearity for 2.5G, 3G, 4G, and WiMAX wireless base stations.


Analog Devices Eases Wireless Base Station Design Complexity, March 2007
Two-chip IF receiver for cellular base stations preconfigured to support emerging 3G standards.


Dual-Input Clock Generator Increases System Stability In Networking And Data Communications Applications, January 2007
AD9549 provides extended holdover functionality and jitter cleanup to increase system stability and maximize network uptime.


Analog Devices Introduces Dual 14-Bit Analog-To-Digital Converter For 3G And WiMax Base Stations, December 2006
Supporting sampling rates to 150 MSPS, the dual 14-bit ADC meets the sampling rate requirements for all wireless standards, including WiMAX.

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Application Notes:

AN-807: Multicarrier WCDMA Feasibility (pdf, 992,463 bytes)
The goal of this application note is to determine the feasibility of implementing a multicarrier 3G transceiver and what the major subsystem performances must be.


AN-808: Multicarrier CDMA2000 Feasibility (pdf, 1,572,239 bytes)
The goal of this application note is to determine the feasibility of implementing a multicarrier CDMA2000 transceiver and what the major subsystem performances must be.


AN-737: How ADIsimADC™ Models an ADC (pdf, 291,797 bytes)
Converter modeling has often been overlooked, omitted, or accomplished using an ideal data converter model. With more and more systems using mixed-signal technology, the importance of system modeling is ever increasing. Coupled with shortened design cycles and pressure for fi rst pass success, this drives the continuing importance of complete system modeling. ADIsimADC has been developed to answer this growing need.


AN-826: A 2.4 GHz WiMAX Direct Conversion Transmitter (pdf, 427,904 bytes)
The purpose of this application note is to demonstrate the Analog Devices, Inc. WiMAX 5 V transmit signal chain for applications extending up to 2.7 GHz.


AN-851: A WiMax Double Downconversion IF Sampling Receiver Design (pdf, 268,945 bytes)
This application note describes an intermediate frequency (IF) sampling receiver intended for use in the wireless communica-tion services (WCS) band from 2.3 GHz to 2.36 GHz and the unlicensed ISM band from 2.4 GHz to 2.48 GHz.

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Technical Articles:

Analog/Digital-Converter Clock Optimization: A Test Engineering Perspective
Analog Dialogue: Volume 42 – February 2008
By Rob Reeder, Wayne Green, and Robert Shillito


Data Converter Function Can Help Solve Cost and Size Design Challenges in 3G and 4G Wireless Infrastructure
Analog Dialogue: Volume 41 – October 2007
By Chris Cloninger

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Solutions Bulletins:

Solutions Bulletin Library (All Bulletins)

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Tutorial:

Design and Operation of Automatic Gain Control Loopes for Receivers in Modern Communication Systems
(pdf, 132,539 bytes)

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