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AD7693:  16-Bit, ±0.5 LSB, 500 kSPS PulSAR® Differential A/D Converter in MSOP/QFN

The AD7693 is a 16-bit, successive approximation analog-to-digital converter (ADC) that operates from a single power supply, VDD. It contains a low power, high speed, 16-bit sampling ADC with no missing codes, an internal conversion clock, and a versatile serial interface port. The reference voltage, VREF, is applied externally and can be set up to the supply voltage, VDD. On the CNV ...More

AD7693:  16-Bit, ±0.5 LSB, 500 kSPS PulSAR® Differential A/D Converter in MSOP/QFN

Product Description

The AD7693 is a 16-bit, successive approximation analog-to-digital converter (ADC) that operates from a single power supply, VDD. It contains a low power, high speed, 16-bit sampling ADC with no missing codes, an internal conversion clock, and a versatile serial interface port. The reference voltage, VREF, is applied externally and can be set up to the supply voltage, VDD. On the CNV rising edge, it samples the voltage difference between the IN+ and IN− pins. The voltages on these pins swing in opposite phase between 0 V and VREF about VREF/2.

Its power scales linearly with throughput.

Using the SDI input, the SPI-compatible serial interface also features the ability to daisy-chain several ADCs on a single 3-wire bus and provides an optional busy indicator. It is compatible with 1.8 V, 2.5 V, 3 V, or 5 V logic, using the separate VIO supply.

The AD7693 is housed in a 10-lead MSOP or a 10-lead QFN (LFCSP) with operation specified from −40°C to +85°C.

Applications

  • Battery-powered equipment
  • Data acquisitions
  • Seismic data acquisition systems
  • DVMs Instrumentation
  • Medical instruments

    • Data Sheet, Rev. 0, 12/06

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    • 16-bit resolution with no missing codes
    • Throughput: 500 kSPS
    • INL/DNL: ±0.25 LSB typ, ±0.5 LSB max (±8 ppm of FSR)
    • Dynamic range: 96.5 dB
    • SINAD: 96 dB @ 1 kHz
    • THD: −120 dB @ 1 kHz
    • True differential analog input range: ±VREF 0 V to VREF with VREF up to VDD on both inputs
    • No pipeline delay
    • Single-supply 5 V operation with 1.8 V/2.5 V/3 V/5 V logic interface
    • Serial interface SPI®/QSPI™/MICROWIRE™/DSP compatible
    • Daisy-chain multiple ADCs, selectable busy indicator
    • Power dissipation: 40 nJ/conversion
      40 μW @ 5 V/1 kSPS
      4 mW @ 5 V/100 kSPS
      18 mW @ 5 V/500 kSPS
    • Resolution (Bits): 16bit
    • T-Put Rate: 500kSPS
    • # Chan: 1
    • Supply V: Single(+5)
    • Pwr Diss: 21.5mW
    • Interface: Ser,SPI
    • Ain Range: (2Vref) p-p,Bip (Vref) x 2
    • SNR (dB): 96dB
    • Pkg Type: CSP,SOP

    Functional Block Diagram for AD7693

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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.
    **Sample availability may be better than production availability. Please enter samples into your cart to check sample availability.