1FEATURES

2· Drop-In Replacement for the ADS774

· Complete Sampling ADC with Reference,

Clock, and Microprocessor Interface

· Fast Acquisition and Conversion: 8.5ms 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

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 for the 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 8.5ms 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 include a 28-pin

SO, and 0.3in-wide or 0.6in-wide 28-pin DIPs(1).