The AD630 is a high precision balanced modulator that combines a flexible commutating architecture with the accuracy and temperature stability afforded by laser wafer trimmed thin film resistors. Its signal processing applications include balanced modulation and demodulation, synchronous detection, phase detection, quadrature detection, phase-sensitive detection, lock-in amplification, and square wave multiplication. A network of on-board applications resistors provides precision closed-loop gains of ±1 and ±2 with 0.05% accuracy (AD630B). These resistors may also be used to accurately configure multiplexer gains of +1, +2, +3, or +4. Alternatively, external feedback may be employed, allowing the designer to implement high gain or complex switched feedback topologies.
|Title||Content Type||File Type|
|AD630: Balanced Modulator/Demodulator Data Sheet (Rev E, 06/2004) (pdf, 313 kB)||Data Sheets|
|AD630: Military Data Sheet (Rev A, 03/2001) (pdf)||Data Sheets|
|AN-924: Digital Quadrature Modulator Gain (pdf, 105 kB)||Application Notes|
|AN-683: Strain Gage Measurement Using an AC Excitation (pdf, 122 kB)||Application Notes|
AN-307: Modem-Circuit Techniques Simplify Instrumentation Designs
(pdf, 890 kB)
A commutating modem circuit, whether an IC or pc-board, can serve as a building block for many measurement-system functions, reducing noise and ensuring the integrity of transmitted data.
AN-306: Synchronous System Measures µΩs
(pdf, 37 kB)
Synchronous Detection Scheme Measures Low Resistances
AN-214: Ground Rules for High Speed Circuits
(pdf, 356 kB)
Layout and Wiring Are Critical in Video Converter Circuits.
AN-349: Keys to Longer Life for CMOS
(pdf, 89 kB)
Here's How CMOS Can be Protected Against Abuse
|AN-308: Commutating Amp Multiplies Precisely (pdf, 40 kB)||Application Notes|
ADI Warns Against Misuse of COTS Integrated Circuits
(pdf, 13 kB)
Invites Customer Participation in Creative Mil/Aero System Solutions
Space Qualified Parts List
(pdf, 93 kB)
This document lists 67 (240+) space level products that are available from Analog Devices. Many of the products listed are state-of-the-art data conversion and signal processing products that were previously only available as commercial or military Class B products. Through our Space Products Group and MIL-PRF-38535 certified Level V (Class S) facility, we are pleased to offer these products to the space marketplace.
|Leading Inside Advertorials: Broadband I/Q Modulator Eases Radio Design (pdf, 69 kB)||Overview|
|ADL5375 Modulator / ADL5382 Demodulator||Overview||HTML|
|RAQs index||Rarely Asked Questions||HTML|
|Glossary of EE Terms||Glossary||HTML|
|Title||Content Type||File Type|
|AD630 SPICE Macro Model||SPICE Models||HTML|
Symbols and Footprints— Analog Devices offers Symbols & Footprints which are compatible with a large set of today’s CAD systems for broader and easier support.
The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Analog Devices, Inc. sales office or authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.