ADC80MAH-12 Datasheet, PDF (1/4 Pages) Burr-Brown (TI) – Monolithic12-Bit ANALOG-TO-DIGITAL CONVERTER

®
ADC80MAH-12
Monolithic12-Bit
ANALOG-TO-DIGITAL CONVERTER
FEATURES
q INDUSTRY-STANDARD 12-BIT ADC
q MONOLITHIC CONSTRUCTION
q LOW COST
q ±0.012% LINEARITY
q 25µs max CONVERSION TIME
q ±12V OR ±15V OPERATION
q NO MISSING CODES: –25°C to +85°C
q HERMETIC 32-PIN PACKAGE
q PARALLEL OR SERIAL OUTPUTS
q 705mW max DISSIPATION
DESCRIPTION
circuits have been redesigned to allow simplified free-
running operation with internal or external clock.
Data is available in parallel and serial form with
corresponding clock and status signals. All digital
input and output signals are TTL/LSTTL-compatible,
with internal pull-up resistors included on all digital
inputs to eliminate the need for external pull-up resis-
tors on digital inputs not requiring connection. The
ADC80MAH-12 operates equally well with either
±15V or ±12V analog power supplies, and also re-
quires use of a +5V logic power supply. However,
unlike many ADC80-type products, a +5V analog
power supply is not required. It is packaged in a
hermetic 32-pin side-brazed ceramic dual-in-line pack-
age.
The ADC80MAH-12 is a 12-bit single-chip succes-
sive-approximation analog-to-digital converter for low
cost converter applications. It is complete with a
comparator, a 12-bit DAC which includes a 6.3V
reference laser-trimmed for minimum temperature
coefficient, a successive approximation register (SAR),
clock, and all other associated logic functions.
Internal scaling resistors are provided for the selection
of analog input signal ranges of ±2.5V, ±5V, ±10V, 0
to +5V, or 0 to +10V. Gain and offset errors may be
externally trimmed to zero, enabling initial end-point
accuracies of better than ±0.12% (±1/2LSB).
The maximum conversion time of 25µs makes the
ADC80MAH-12 ideal for a wide range of 12-bit
applications requiring system throughput sampling
rates up to 40kHz. In addition, this A/D converter may
be short-cycled for faster conversion speed with re-
duced resolution, and an external clock may be used to
synchronize the converter to the system clock or to
obtain higher-speed operation. The convert command
Clock
Inhibit
External
Clock
Short
Cycle
Comparator
In
20V Range
10V Range
Bipolar
Offset
Clock
Successive
Approximation
Register
Comparator
Clock
Out
Parallel
Data
Output
Serial
Out
12-Bit D/A
Converter
Reference Out
International Airport Industrial Park • Mailing Address: PO Box 11400 • Tucson, AZ 85734 • Street Address: 6730 S. Tucson Blvd. • Tucson, AZ 85706
Tel: [phone] • Twx: 910-952-1111 • Cable: BBRCORP • Telex: 066-6491 • FAX: [phone] • Immediate Product Info: [phone]
©_{1986 Burr-Brown Corporation}
PDS-694A
Printed in U.S.A. October, 1993