FEATURES

20μs max CONVERSION TIME

SINGLE +5V SUPPLY OPERATION

PIN-COMPATIBLE WITH 16-BIT ADS7813

EASY-TO-USE SERIAL INTERFACE

0.3 DIP-16 AND SO-16

±0.5LSB max INL AND DNL

72dB min SINAD

USES INTERNAL OR EXTERNAL

REFERENCE

MULTIPLE INPUT RANGES

35mW max POWER DISSIPATION

NO MISSING CODES

50μW POWER DOWN MODE

APPLICATIONS

DATA ACQUISITION SYSTEMS

INDUSTRIAL CONTROL

TEST EQUIPMENT

DIGITAL SIGNAL PROCESSING

DESCRIPTION

The ADS7812 is a low-power, single +5V supply, 12-bit

sampling analog-to-digital converter. It contains a complete

12-bit capacitor-based SAR A/D with a sample/hold, clock,

reference, and serial data interface.

The converter can be configured for a variety of input ranges

including ±10V, ±5V, 0V to 10V, and 0.5V to 4.5V. A high

impedance 0.3V to 2.8V input range is also available (input

impedance > 10MΩ). For most input ranges, the input

voltage can swing to +16.5V or –16.5V without damage to

the converter.

A flexible SPI compatible serial interface allows data to be

synchronized to an internal or external clock. The ADS7812

is specified at a 40kHz sampling rate over the –40°C to

+85°C temperature range. It is available in a 0.3 DIP-16 or

an SO-16 package.