FEATURES
SINGLE SUPPLY: 2.7V to 5V
4-CHANNEL INPUT MULTIPLEXER
UP TO 200kHz SAMPLING RATE
FULL 12-BIT PARALLEL INTERFACE
±1LSB INL AND DNL
NO MISSING CODES
72dB SINAD
LOW POWER: 2mW
SSOP-28 PACKAGE

APPLICATIONS
DATA ACQUISITION
TEST AND MEASUREMENT
INDUSTRIAL PROCESS CONTROL
MEDICAL INSTRUMENTS
LABORATORY EQUIPMENT

DESCRIPTION
The ADS7842 is a complete, 4-channel, 12-bit Analog-to-
Digital Converter (ADC). It contains a 12-bit, capacitorbased,
Successive Approximation Register (SAR) ADC with
a sample-and-hold amplifier, interface for microprocessor
use, and parallel, 3-state output drivers. The ADS7842 is
specified at a 200kHz sampling rate while dissipating only
2mW of power. The reference voltage can be varied from
100mV to VCC with a corresponding LSB resolution from
24μV to 1.22mV. The ADS7842 is tested down to 2.7V
operation.
Low power, high speed, and an onboard multiplexer make
the ADS7842 ideal for battery-operated systems such as
portable, multi-channel dataloggers and measurement equipment.
The ADS7842 is available in an SSOP-28 package
and is tested over the –40°C to +85°C temperature range.