ADS8638SRGET 16-Bit 500kSPS 8-Channel SAR ADC with Low Noise High Accuracy SPI Interface Wide Supply Range and Robust Performance for Industrial Apps

ADS8638SRGET 16-Bit 500kSPS 8-Channel SAR ADC with Low Noise High Accuracy SPI Interface Wide Supply Range and Robust Performance for Industrial Apps

FEATURES

Selectable input Range:

  ±10V, ±5V,+2.5V, OV to 10V, orOV to 5V

  Up to ±12V with External Reference

No Latent Conversions Up to 1MSPS

Outstanding Performance:

  12 Bits No Missing Codes

  INL: +O.9LSB

  SNR:71.8dB

Highly integrated:

  4-or 8-Channel input Mux

  Temperature Sensor

  Internal Voltage Reference

  Alarm Thresholds for Each Channel

Low Power:

  14.45mW at 1MSPS

  5.85mW at 0.1MSPS
  Flexible Power-Down Mode

SPi.Compatible Serial Interface

Extended Temperature Range:

  -40'C to +125°C

Small Footprint: 4mm x 4mm QFN Package

DESCRIPTION

The ADS8634 and ADS8638(ADS8634/8)are 12-bitanalog-to-digital converters(ADCs)capable ofmeasuring inputs up to +10V at 1MSPS. Using asuccessive approximation register(SAR) core,theseADCs provide a sample-and-hold front-end with nolatency in conversions.The ADS8634 includes aninput multiplexer(mux)for measuring up to fourinputs. The ADS8638 can measure up to eight inputs

In addition to the input multiplexer,the ADS8634/8feature an internal temperature sensor,voltage reference,and a digital comparator for setting alarm thresholds on eachinput;therefore,a minimal amount of external components are required.ASPl-compatible interface provides for simplecom munication and control.Thedigital supplyoperates from 5V all the way down to 1.8V for direct connection to awide range of processors and controllers.

Ideal for demanding industrial measurement applications,the ADS8634/8 are fully specified overthe extended industrial temperature range of -40*Cto +125°C and are available in a small form-factorQFN-24 package.

APPLICATIONS

• IndustrialProcessControls(PLC)

• DataAcquisitionSystems

• High-Speed,Closed-LoopSystems

• DigitalPowerSupplies

INFORMATION

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