AD7760

2.5 MSPS, 24-Bit, 100 dB Sigma-Delta ADC with On-Chip Buffer
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Product Details

The AD7760 is a high performance, 24-bit Σ-Δ analog-to-digital converter (ADC). It combines wide input bandwidth and high speed with the benefits of Σ-Δ conversion to achieve a performance of 100 dB SNR at 2.5 MSPS, making it ideal for high speed data acquisition. Wide dynamic range combined with significantly reduced antialiasing requirements simplify the design process. An integrated buffer to drive the reference, a differential amplifier for signal buffering and level shifting, an overrange flag, internal gain and offset registers, and a low-pass digital FIR filter make the AD7760 a compact, highly integrated data acquisition device requiring minimal peripheral component selection. In addition, the device offers programmable decimation rates, and the digital FIR filter can be adjusted if the default characteristics are not appropriate for the application. The AD7760 is ideal for applications demanding high SNR without a complex front-end signal processing design.

The differential input is sampled at up to 40 MSPS by an analog modulator. The modulator output is processed by a series of low-pass filters, with the final filter having default or user-programmable coefficients. The sample rate, filter corner frequencies, and output word rate are set by a combination of the external clock frequency and the configuration registers of the AD7760. 

The reference voltage supplied to the AD7760 determines the analog input range. With a 4 V reference, the analog input range is ±3.2 V differential biased around a common mode of 2 V. This common-mode biasing can be achieved using the on-chip differential amplifier, further reducing the external signal conditioning requirements. 

The AD7760 is available in an exposed paddle, 64-lead TQFP and is specified over the industrial temperature range from −40°C to +85°C. 

Applications

  • Data acquisition systems
  • Vibration analysis
  • Instrumentation

Product Lifecycle

checked 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

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Product Details

The EVAL-AD7760EDZ is a fully featured evaluation Kit for the AD7760. This board operates in stand alone mode or in conjunction with the Converter Evaluation and Development board, EVAL-CED1Z . When operated with the Converter Evaluation and Development board, software is provided enabling the user to perform detailed analysis of the ADC's performance. This software includes the technical note describing the operation and set up of the evaluation board in standalone operation or when operated with the Converter Evaluation and Development board.

Documentation

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Tools & Simulations

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Design Tools

Product Recommendations

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AD7760 Companion Parts

Recommended Driver Amplifiers

  • For low power, low frequency, small package , we recommend the AD8519 .
  • For low noise and high frequency, try the AD8021 or the dual AD8022. , we recommend the AD8021 or the AD8022 .
  • For low noise, low power and low frequency , we recommend the OP184 .
  • For high frequency and low power , we recommend the AD8031 .
  • For low power and 5V single supply , we recommend the AD8605, AD8615 or the AD8655 .
  • For low noise and low power applications , we recommend the ADA4841-1 .

Recommended Voltage Reference

  • For high precision, ultralow noise and high output source and sink current , we recommend the ADR431 or the ADR434 .

Design Resources

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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.

AD7760 Material Declaration
PCN-PDN Information Quality And Reliability Symbols and Footprints

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AD7760 Discussions

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Reviews

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Overview

2 Reviews
2 out of 2 (100%) customers recommend this product.
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Most Helpful Review

by ganigangi
I am challenging around for selecting an excellent A2D for my Precision High sample rate application From AD, this device (AD7760 avl from 2006) has very good features but @ 2013 I think it needs re_evaluation and adding some features to it 1- adding an inverting LOW NOISE + HIGH SPEED + DC PRECISION amp to it to remove external AD8021 inverting .... or redesigning to simply accept single ended and differential inputs 2- adding internal resistor network for DIFF/DIFF amp ( for now, we need external 0.1% matched resistor to achieve good CMRR , etc...) 3- redesigning internal modulator to achieve 10MSPS and 100db SNR @ 5MHZ ( for replacing 18 and 20 bit SAR A2D ) 4- providing internal REF with 2PPM/C 5- providing a SMALL PCB that includes all external parts and designed and routed properly to achieve highest performance of this device and the customers like me, can use that and , jump a head 6- for some other high precision and layout sensitive devices it would be very attractive to buy a ready to use module not some IC+CAP+RES+L+ sch design + pcb design and route and test and verify and redesign and repeat .... and a total headache !!!) REGARDS

All Reviews

by ganigangi, 26 Oct 13
AD7760 pre eval
I am challenging around for selecting an excellent A2D for my Precision High sample rate application From AD, this device (AD7760 avl from 2006) has very good features but @ 2013 I think it needs re_evaluation and adding some features to it 1- adding an inverting LOW NOISE + HIGH SPEED + DC PRECISION amp to it to remove external AD8021 inverting .... or redesigning to simply accept single ended and differential inputs 2- adding internal resistor network for DIFF/DIFF amp ( for now, we need external 0.1% matched resistor to achieve good CMRR , etc...) 3- redesigning internal modulator to achieve 10MSPS and 100db SNR @ 5MHZ ( for replacing 18 and 20 bit SAR A2D ) 4- providing internal REF with 2PPM/C 5- providing a SMALL PCB that includes all external parts and designed and routed properly to achieve highest performance of this device and the customers like me, can use that and , jump a head 6- for some other high precision and layout sensitive devices it would be very attractive to buy a ready to use module not some IC+CAP+RES+L+ sch design + pcb design and route and test and verify and redesign and repeat .... and a total headache !!!) REGARDS
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by ANDI, 8 Jun 13
AD7760
Very good ADC, stable and reliable (though still in beta)
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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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Evaluation Boards Pricing displayed is based on 1-piece.
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.