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AD7729:  3 V, Dual Sigma-Delta ADC with Auxiliary DAC

Product Details


This monolithic 3 V CMOS device is a low power, two-channel, input port with signal conditioning. The receive path is composed of two, high-performance sigma-delta ADCs with digital filtering. A common bandgap reference feeds the ADCs. A control DAC is included for such functions as AGC. The auxiliary functions can be accessed via the auxiliary port (ASPORT). The maximum output word rate is 270 kHz.

The device is available in a 28-pin TSSOP package and a 28-pin SOIC package.

FEATURES and BENEFITS

  • +3 V Supply Voltage
  • Baseband Serial Port (BSPORT)
  • Differential IRx and QRx
  • Auxiliary D/A Converter
  • Auxiliary Serial Port (ASPORT)
  • On-Chip Voltage Reference
  • Low Power
  • 28-Lead TSSOP/28-Lead SOIC
  • ADC Channels
    - Two 15-Bit Sigma-Delta A/D Converters
    - FIR Digital Filters
    - 64 dB SNR
    - Output Word Rate 270.83 kHz
    - Twos Complement Coding
    - On-Chip Offset Calibration
    - Power-Down Mode

Functional Block Diagram for AD7729

Documentation

Title Content Type File Type
AD7729: Dual Sigma-Delta ADC with Auxiliary DAC Data Sheet (Rev 0, 11/1998) (pdf, 142 kB) Data Sheets PDF
MS-2210: Designing Power Supplies for High Speed ADC  (pdf, 327 kB) Technical Articles PDF
Delta-Sigma Rocks RF, As ADC Designers Jump On Jitter
(Electronic Design, 1/12/06)
Technical Articles HTML
RAQs index Rarely Asked Questions HTML
Glossary of EE Terms Glossary HTML

Design Tools,Models,Drivers & Software

Title Content Type File Type
Sigma-Delta ADC Tutorial
An interactive illustration showing the behavior of an idealized sigma-delta A/D converter.
Utilities and Conversions HTML

Evaluation Kits & Symbols & Footprints

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.

SampleSample & Buy

Price, packaging, availability

AD7729 Model Options
Model Package Pins Temp.
Range
Packing,
Qty
Price*(100-499) Price*1000 pcs RoHS View PCN/ PDN Check Inventory/
Purchase/Sample
AD7729ARU Status: Production 28 ld TSSOP 28 Ind Tube, 50 $11.75 $10.01 N  Material Info PCN Purchase
AD7729ARU-REEL Status: Last Time Buy 28 ld TSSOP 28 Ind Reel, 2500 - $10.01 N  Material Info PCN/PDN Purchase
AD7729ARU-REEL7 Status: Production 28 ld TSSOP 28 Ind Reel, 1000 - $10.01 N  Material Info PCN Purchase
AD7729ARUZ Status: Production 28 ld TSSOP 28 Ind Tube, 50 $10.70 $9.11 Y  Material Info PCN Purchase
AD7729ARUZ-REEL Status: Production 28 ld TSSOP 28 Ind Reel, 2500 - $9.11 Y  Material Info PCN Purchase
AD7729ARUZ-REEL7 Status: Production 28 ld TSSOP 28 Ind Reel, 1000 - $9.11 Y  Material Info PCN Purchase
AD7729ARZ Status: Production 28 ld SOIC - Wide 28 Ind Tube, 27 $10.70 $9.11 Y  Material Info PCN Purchase
AD7729ARZ-RL Status: Production 28 ld SOIC - Wide 28 Ind Reel, 1000 - $9.11 Y  Material Info PCN Purchase
Price Table Help

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.


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