AD7690
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AD7690

18-Bit, 1.5 LSB INL, 400 kSPS PulSAR® Differential ADC in MSOP/QFN

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Info: : PRODUCTION tooltip
Info: : PRODUCTION tooltip
Part Details
Part Models 3
1ku List Price Starting From $23.91
Features
  • 18-bit resolution with no missing codes
  • Throughput: 400 kSPS
  • INL: ±0.75 LSB typ, ±1.5 LSB max
    (±6 ppm of FSR)
  • Dynamic range: 102 dB @ 400 kSPS
  • Oversampled dynamic range: 125 dB @ 1 kSPS
  • Noise-free code resolution: 20 bits @ 1 kSPS
  • Effective resolution: 22.7 bits @ 1 kSPS
  • SINAD: 101.5 dB @ 1 kHz
  • THD: −125 dB @ 1 kHz
  • True differential analog input range:
    ±VREF0 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
Additional Details
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The AD7690 is an 18-bit, successive approximation, analog-to-digital converter (ADC) that operates from a single power supply, VDD. It contains a low power, high speed, 18-bit sampling ADC with no missing codes, an internal conversion clock, and a versatile serial interface port. 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 REF. The reference voltage, REF, is applied externally and can be set up to the supply voltage.

The power of the AD7690 scales linearly with the throughput.

The SPI-compatible serial interface also features the ability, using the SDI input, 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 AD7690 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 acquisition
  • Seismic data acquisition systems
  • DVMs
  • Instrumentation
  • Medical instruments
Part Models 3
1ku List Price Starting From $23.91

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Documentation

Documentation

Part Model Pin/Package Drawing Documentation CAD Symbols, Footprints, and 3D Models
AD7690BCPZRL7
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AD7690BRMZ
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AD7690BRMZ-RL7
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Product Lifecycle

PCN

May 15, 2012

- 10_0006

Halogen Free Material Change for mini SOIC Products

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Part Models

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PCN

May 15, 2012

- 10_0006

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Halogen Free Material Change for mini SOIC Products

Software and Part Ecosystem

Software and Part Ecosystem

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Evaluation Kit

Evaluation Kits 2

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EVAL-AD7690-PMDZ

18-Bit, 400 kSPS PulSAR® ADC PMOD Evaluation Board

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EVAL-AD7690-PMDZ

18-Bit, 400 kSPS PulSAR® ADC PMOD Evaluation Board

18-Bit, 400 kSPS PulSAR® ADC PMOD Evaluation Board

Features and Benefits

  • 18-Bit Analog to Digital Converters
  • 400 kSPS
  • Unipolar, Differential Input
  • Standard SPI PMOD header/pin out
  • Connectable to 3rd Party FPGA and MCU Platforms

Product Detail

The PMOD-compatible evaluation/prototyping board is a small form factor, low-cost analog-to-digital conversion option. When prototyping, this board is used in conjunction with your favorite MCU or FPGA development board which has the SPI PMOD peripheral connector. Direct electrical and physical connection will enable you to quickly develop software for your system.

This board can also be operated as an evaluation board using the System Demonstration Platform (EVAL-SDP-CB1Z) and an adaptor board (SDP-PMD-IB1Z). When operated with the System Demonstration Platform, a LabView software GUI is provided enabling the user to perform analysis of the ADC's performance.

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EVAL-AD7690

AD7690 Evaluation Kit

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EVAL-AD7690

AD7690 Evaluation Kit

Product Detail

The EVAL-AD7690SDZ is a fully featured evaluation kit for the AD7690. This board operates in stand alone mode or in conjunction with the System Development Platform, EVAL-SDP-CB1Z . When operated with the System Development Platform 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 System Development Platform . When operated in standalone mode the ADZS-BRKOUT-EX3 break out board is recommended for access to various control pins

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Tools & Simulations

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