Precision ADS8634SRGER 16-bit Resolution 4-Ch Input Ultra-Low Power SPI Communication 2.7-5.5V Supply On-Chip Reference Compact 24-QFN for Industrial Applications

FEATURES

Selectable input Range:

±10V,±5V,+2.5V, 0V 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: +0.9LSB

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

APPLICATIONS

• IndustrialProcessControls(PLC)

• DataAcquisitionSystems

• High-Speed,Closed-LoopSystems

• DigitalPowerSupplies

DESCRIPTION

The ADS8634 and ADS8638(ADS8634/8)are 12-bit analog-to-digital converters (ADCs) capable of measuring inputs up to +10V at 1MSPS. Using a successive approximation register(SAR) core, these ADCs provide a sample-and-hold front-end with no latency in conversions. The ADS8634 includes an input multiplexer(mux)for measuring up to four inputs.The ADS8638 can measure up to eight inputs

In addition to the input multiplexer, the ADS8634/8 feature aninternal temperature sensor,voltage reference, and a digital comparator for setting alarm thresholds on each input;therefore,aminimal amount of external components are required.A simple SPl-compatible interface provides for communication and control.The digital supply operates from 5V all the way down to 1.8V for direct connection to a wide range of processors andcontrollers.

Ideal fordemanding industrial measurement applications, the ADS8634/8 are fully specified over the extended industrial temperature range of -40°C to +125°C and are available in a small form-factor QFN-24 package.

INFORMATION

Drawing

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