®
ADS
783
2
ADS7832
2
ADS
783
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: 8.5
µ
s
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
A1
Address
Latch and
Decoder
Calibration
Microcontroller
and Memory
Clock
Control
Logic
CS
RD
WR
SFR
AIN0
AIN1
AIN2
AIN3
Analog
Multiplexer
Capacitor Array
Sampling ADC
Three-State
Input/Output
BUSY
8-Bit
Data Bus
V
REF
+
V
REF
–
International Airport Industrial Park • Mailing Address: PO Box 11400, Tucson, AZ 85734 • Street Address: 6730 S. Tucson Blvd., Tucson, AZ 85706 • Tel: (520) 746-1111 • Twx: 910-952-1111
Internet: http://www.burr-brown.com/ • FAXLine: (800) 548-6133 (US/Canada Only) • Cable: BBRCORP • Telex: 066-6491 • FAX: (520) 889-1510 • Immediate Product Info: (800) 548-6132
©
1996 Burr-Brown Corporation
PDS-1332B
Printed in U.S.A. April, 1998
BURR-BROWN [ BURR-BROWN CORPORATION ]
