AD7709
16-Bit Sigma Delta ADC with Current Sources, Switchable Reference Inputs and I/O Port
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Overview
Features and Benefits
- 16-Bit Σ-Δ ADC
- Simultaneous 50 Hz and 60 Hz Rejection at 20 Hz Update Rate
- VREF Select™ Allows Absolute and Ratiometric Measurement Capability
- Programmable Gain Front End
- ISOURCE Select™
- 16-Bit No Missing Codes
- 13-Bit p-p Resolution @ 20 Hz, 20 mV Range
- 16-Bit p-p Resolution @ 20 Hz, 2.56 V Range
Product Details
The AD7709 is a complete analog front-end for low frequency measurement applications. The AD7709 contains a 16-bit sigma delta ADC with PGA and can be configured as 2 fully-differential input channels or 4 pseudo-differential input channels. Inputs signal ranges from 20mV to 2.56V can be directly converted using the AD7709. These signals can be converted directly from a transducer without the need for signal conditioning. Other on-chip features include three software configurable current sources, switchable reference inputs, low side power switches and a 4-bit digital I/O port.
Product Categories
Product Lifecycle
Production
At least one model within this product family is in production and available for purchase. The product is appropriate for new designs but newer alternatives may exist.
Evaluation Kits (1)
Documentation & Resources
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AN-610: The PGA on Sigma-Delta ADCs (Rev. A)2/14/2015
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AN-609: Chopping on Sigma-Delta ADCs (Rev. 0)2/14/2015
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AN-608: Input Buffers on Sigma-Delta ADCs (Rev. 0)2/14/2015
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AN-202: An IC Amplifier User’s Guide to Decoupling, Grounding, and Making Things Go Right for a Change (Rev. B)2/14/2015
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AN-389: Using Sigma-Delta Converters-Part 22/14/2015
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AN-388: Using Sigma-Delta Converters-Part 12/14/2015
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AN-311: How to Reliably Protect CMOS Circuits Against Power Supply Overvoltaging3/8/2008
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AN-607: Selecting a Low Bandwidth (<15 kSPS) Sigma-Delta ADC (Rev. E)10/12/2006
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AN-615: Peak-to-Peak Resolution Versus Effective Resolution (Rev. 0)12/21/2004
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AN-611: 50 Hz/60Hz Rejection on Sigma-Delta ADCs (Rev. 0)8/15/2003
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AN-397: Electrically Induced Damage to Standard Linear Integrated Circuits:11/18/2002
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AN-283: Sigma-Delta ADCs and DACs9/24/2002
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Designing Power Supplies for High Speed ADC2/1/2012
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Delta-Sigma Rocks RF, As ADC Designers Jump On Jitter1/12/2006
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Part 2: Circuit Suggestions Using Features and Functionality of New Sigma-Delta ADCs6/1/2002
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Part 1: Circuit Suggestions Using Features and Functionality of New Sigma-Delta ADCs10/1/2001
Tools & Simulations
Design Tool
Sigma-Delta ADC Tutorial
An interactive illustration showing the behavior of an idealized sigma-delta A/D converter.
Design Resources
ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal.View our quality and reliability program and certifications for more information.
| Part Number | Material Declaration | Reliability Data | Pin/Package Drawing | CAD Symbols, Footprints & 3D Models |
|---|---|---|---|---|
| AD7709ARUZ | Material Declaration | Reliability Data | 24-Lead TSSOP | |
| AD7709ARUZ-REEL7 | Material Declaration | Reliability Data | 24-Lead TSSOP | |
| AD7709BRUZ | Material Declaration | Reliability Data | 24-Lead TSSOP | |
| AD7709BRUZ-REEL | Material Declaration | Reliability Data | 24-Lead TSSOP | |
| AD7709BRUZ-REEL7 | Material Declaration | Reliability Data | 24-Lead TSSOP | |
| Wafer Fabrication Data |
PCN-PDN Information
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Sample & Buy
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Buy Now Pricing
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List Pricing
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Lead Times
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Sampling
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