ADS7832 Datasheet, PDF (1/15 Pages) Burr-Brown (TI) – Autocalibrating, 4-Channel, 12-Bit ANALOG-TO-DIGITAL CONVERTER

®
ADS7832
ADS7832
ADS7832
Autocalibrating, 4-Channel, 12-Bit
ANALOG-TO-DIGITAL CONVERTER
FEATURES
q PIN COMPATIBLE TO ADC7802 AND
ADS7803
q SINGLE SUPPLY: +5V OR +3.3V
q LOW POWER: 14mW plus Power Down
q SIGNAL-TO-(NOISE + DISTORTION)
RATIO OVER TEMPERATURE:
69dB min with f_IN = 1kHz
66dB min with f_IN = 50kHz
q FAST CONVERSION TIME: 8.5µs
Including Acquisition (117kHz Sampling
Rate)
q FOUR-CHANNEL INPUT MULTIPLEXER
q AUTOCAL: No offset or Gain Adjust
Required
DESCRIPTION
The ADS7832 is a monolithic CMOS 12-bit analog-
to-digital converter with internal sample/hold and four-
channel multiplexer. It is designed and tested for full
dynamic performance with input signals to 50kHz.
The 5V single-supply requirements and standard CS,
RD, and WR control signals make the part easy to use
in microprocessor applications. Conversion results are
available in two bytes through an 8-bit three-state
output bus.
The ADS7832 is available in a 28-pin plastic DIP and
28-lead PLCC, fully specified for operation over the
industrial –40°C to +85°C temperature range.
A0
Address
Calibration
Latch and
Microcontroller
A1
Decoder
and Memory
Clock
Control
Logic
CS
RD
WR
SFR
AIN0
AIN1
AIN2
AIN3
Analog
Multiplexer
Capacitor Array
Sampling ADC
V_REF+ V_REF–
Three-State
Input/Output
BUSY
8-Bit
Data Bus
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©_{1996 Burr-Brown Corporation}
PDS-1332B
Printed in U.S.A. April, 1998