AD7684

16-Bit, 100 kSPS PulSAR®, Differential ADC in MSOP

Data Sheet
Rev. A
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Datasheet
Data Sheet Rev. A
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Overview

Features and Benefits

  • 16-bit resolution with no missing codes
  • Throughput: 100 kSPS
  • INL: ±1 LSB typical, ±3 LSB maximum
  • True differential analog input range: ±VREF
    0 V to VREF with VREF up to VDD on both inputs
  • Single-supply operation: 2.7 V to 5.5 V
  • Standby current: 1 nA
  • Serial interface SPI®-/QSPI-™/MICROWIRE-™/DSP-compatible
  • Power dissipation 
    4 mW @ 5 V 
    1.5 mW @ 2.7 V 
    150 μW @ 2.7 V/10 kSPS
  • 8-lead MSOP package

Product Details

The AD7684 is a 16-bit, charge redistribution, successive approximation, PulSAR® analog-to-digital converter (ADC) that operates from a single power supply, VDD, between 2.7 V to 5.5 V. It contains a low power, high speed, 16-bit sampling ADC with no missing codes, an internal conversion clock, and a serial, SPI-compatible interface port. The part also contains a low noise, wide bandwidth, short aperture delay, track-and-hold circuit. On the CS falling edge, it samples the voltage difference between +IN and –IN pins. The reference voltage, REF, is applied externally and can be set up to the supply voltage. Its power scales linearly with throughput.

The AD7684 is housed in an 8-lead MSOP, with an operating temperature specified from −40°C to +85°C.

Applications

  • Battery-powered equipment
  • Data acquisition
  • Instrumentation
  • Medical instruments
  • Process control

Data Sheet, Rev. A, 10/07

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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.

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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.

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AD7684 Discussions

RE: AD7684 issue (strange behavior)
RE: AD7684 Pre-Processing-Best Methods Approach
RE: ADC with really "True differential input"
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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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Up to two boards can be purchased through Analog.com. To order more than two, please purchase through one of our listed distributors.
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.