AD7720

PRODUCTION

AD7720

CMOS Sigma-Delta Modulator with 90 dB Dynamic Range

PRODUCTION

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1ku List Price Starting From $16.16

Features

12.5 MHz Master Clock Frequency
0 V to +2.5 V or ±1.25 V Input Range
Single Bit Output Stream
90 dB Dynamic Range

Power Supplies: AVDD, DVDD: +5 V ± 5%
On-Chip 2.5 V Voltage Reference
28-Lead TSSOP

Additional Details

This device is a 7th order sigma-delta modulator that converts the analog input signal into a high speed 1-bit data stream. The part operates from a +5 V supply and accepts a differential input range of 0 V to +2.5 V or ±1.25 V centered about a common-mode bias. The analog input is continuously sampled by the analog modulator, eliminating the need for external sample and hold circuitry. The input information is contained in the output stream as a density of ones. The original information can be reconstructed with an appropriate digital filter.

View All Documentation

Ask a Question

Submit your question below and we will return the best answer from ADI’s knowledge database:

Other places you can find help

Support

Analog Devices Support Portal is a one-stop shop to answer all your ADI questions.

Visit the ADI Support Page

Ask the ADI community for help.

Ask the EngineerZone Community

FAQs

Sales & Ordering FAQs

Part Models 1

1ku List Price Starting From $16.16

Technical Documents 10

AD7720: CMOS Sigma-Delta Modulator with 90 dB Dynamic Range Data Sheet (Rev.0) 10/31/1997

AN-397: Electrically Induced Damage to Standard Linear Integrated Circuits: 11/18/2002

AN-388: Using Sigma-Delta Converters-Part 1 02/14/2015

AN-389: Using Sigma-Delta Converters-Part 2 02/14/2015

AN-283: Sigma-Delta ADCs and DACs 09/24/2002

AN-202: An IC Amplifier User’s Guide to Decoupling, Grounding, and Making Things Go Right for a Change (Rev.B) 02/14/2015

AN-311: How to Reliably Protect CMOS Circuits Against Power Supply Overvoltaging 03/08/2008

Delta-Sigma Rocks RF, As ADC Designers Jump On Jitter 01/12/2006

Part 1: Circuit Suggestions Using Features and Functionality of New Sigma-Delta ADCs 10/01/2001

Part 2: Circuit Suggestions Using Features and Functionality of New Sigma-Delta ADCs 06/01/2002

Design Resources 1

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