Alternative Parts
AD7124-8
Lower power and lower noise, completed signal chain integration with diagnostic features for functional safety, easier evaluation and reduced design time
Overview
Features and Benefits
- 8-/10-Channel, High Resolution Σ-Δ ADCs
- 24-Bit Resolution
- Factory-Calibrated
- Single Conversion Cycle Setting
- Programmable Gain Front End
- Simultaneous 50 Hz and 60 Hz Rejection
- VREF Select ™ Allows Absolute and Ratiometric Measurement Capability
- Operation Can Be Optimized for
- Analog Performance (CHOP = 0) or - Channel Throughput (CHOP = 1)
Product Details
The AD7708/18 are complete analog front-ends for low frequency measurement applications. The AD7718 contains a 24-bit sigma delta ADC with PGA and can be configured as 4/5 fully-differential input channels or 8/10 pseudo-differential input channels. Two pins on the device are configurable as analog inputs or reference inputs. The AD7708 is a 16-bit version of the AD7718. Inputs signal ranges from 20mV to 2.56V can be directly converted using these ADCs. Signals can be converted directly from a transducer without the need for signal conditioning.Product Categories
Markets and Technologies
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)2/14/2015PDF152 kB
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AN-609: Chopping on Sigma-Delta ADCs (Rev. 0)2/14/2015PDF232 kB
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AN-608: Input Buffers on Sigma-Delta ADCs (Rev. 0)2/14/2015PDF284 kB
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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)2/14/2015PDF76 K
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AN-389: Using Sigma-Delta Converters-Part 22/14/2015PDF590 kB
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AN-388: Using Sigma-Delta Converters-Part 12/14/2015PDF590 kB
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AN-347: Shielding and Guarding2/14/2015PDF688 kB
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AN-311: How to Reliably Protect CMOS Circuits Against Power Supply Overvoltaging3/8/2008PDF217 kB
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AN-607: Selecting a Low Bandwidth (<15 kSPS) Sigma-Delta ADC (Rev. E)10/12/2006PDF222 kB
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AN-615: Peak-to-Peak Resolution Versus Effective Resolution (Rev. 0)12/21/2004PDF70 kB
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AN-611: 50 Hz/60Hz Rejection on Sigma-Delta ADCs (Rev. 0)8/15/2003PDF360 kB
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AN-665: Channel Switching Using Σ-Δ ADCs (Rev. 0)8/15/2003PDF84 kB
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AN-101: Cross Plot Generator Allows Quick A/D Converter Evaluation12/12/2002PDF280 kB
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AN-397: Electrically Induced Damage to Standard Linear Integrated Circuits:11/18/2002PDF149 kB
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AN-283: Sigma-Delta ADCs and DACs9/24/2002PDF1699 kB
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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 ADCs6/1/2002PDF117K
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Part 1: Circuit Suggestions Using Features and Functionality of New Sigma-Delta ADCs10/1/2001PDF91 K
Software & Systems Requirements
Evaluation Software
Tools & Simulations
Design Tools
Sigma-Delta ADC Tutorial
An interactive illustration showing the behavior of an idealized sigma-delta A/D converter.
Product Recommendations
AD7718 Companion Parts
Recommended Digital Isolators * For optocoupler alternatives, see our digital isolator selection tables
- For isolated USB designs in healthcare and industrial control: ADUM4160.
- For process control applications: ADUM1400, ADUM1200.
- For cost sensitive designs: ADUM7440, ADUM7441, ADUM7442.
- For digital isolators with integrated isolated power: ADUM5401, ADUM5402, ADUM5403.
Recommended Voltage References
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.
PCN-PDN Information
Support & Discussions
AD7718 Discussions
RE: AD7718: input voltage changes when I connect to a loadcell directly
14 week(s) ago in Precision ADCs
Sample & Buy
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Evaluation Boards
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Pricing displayed is based on 1-piece. The USA list pricing shown is for budgetary use only, shown in United States dollars (FOB USA per unit), and is subject to change. International prices may vary due to local duties, taxes, fees and exchange rates.