ADS774H Microprocessor-Compatible Sampling CMS Analog-to-Digital Converter | TI.com

ADS774H (NRND)

Microprocessor-Compatible Sampling CMS Analog-to-Digital Converter

 

Not Recommended for New Designs (NRND)

Replaced By ADS774 – The device is an EXACT EQUIVALENT in functionality and parametrics to the compared device.

TI does not recommend using this part in a new design. This product continues to be in production to support existing customers.

Description

The ADS774H is a 12-bit, successive-approximation analog-to-digital converter (ADC) that uses an innovative capacitor array (CDAC) implemented in low-power CMOS technology. This device is a drop-in replacement forthe ADS774, with internal sampling, much lower power consumption, and the ability to operate from a single +5V supply.

The ADS774H is complete with an internal clock, microprocessor interface, three-state outputs, and internal scaling resistors for input ranges of 0V to +10V, 0V to +20V, ±5V, or ±10V. The maximum throughput time is 8.5µs over the full operating temperature range, including both acquisition and conversion.

Complete user control over the internal sampling function facilitates elimination of external sample/hold amplifiers in most existing designs.

The ADS774H requires +5V, with -15V optional. No +15V supply is required. Packages includea 28-pin SO, and 0.3in-wide or 0.6in-wide 28-pin DIPsDIP-28 package is product preview.

Features

  • Drop-In Replacement for the ADS774
  • Complete Sampling ADC with Reference, Clock, and Microprocessor Interface
  • Fast Acquisition and Conversion: 8.5µs Max Over Temperature
  • Eliminates External Sample/Hold in Most Applications
  • Ensured AC and DC Performance
  • Single +5V Supply Operation
  • Low Power: 120mW Max
  • Package Options: SO, 0.6in and 0.3in DIPs(1)
  • APPLICATIONS
    • Medical Instrumentation
    • Data Acquisition Systems
    • Robotics
    • Industrial Control
    • Test Equipment
    • Digital Signal Processing
    • DSP Servo Control

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