ADC80MAH-12
器件描述：Monolithic12-Bit ANALOG-TO-DIGITAL CONVERTER
器件厂商：BURR-BROWN [Burr-Brown Corporation]
文件大小：46.91KB，共4页
Sponsor by e络盟器件资料摘要：
ADC80MAH-12
Monolithic12-Bit
ANALOG-TO-DIGITAL CONVERTER
FEATURES
l INDUSTRY-STANDARD 12-BIT ADC
l MONOLITHIC CONSTRUCTION
l LOW COST
l ±0.012% LINEARITY
l 25µs max CONVERSION TIME
l ±12V OR ±15V OPERATION
l NO MISSING CODES: –25°C to +85°C
l HERMETIC 32-PIN PACKAGE
l PARALLEL OR SERIAL OUTPUTS
l 705mW max DISSIPATION
DESCRIPTION
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
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.
Bipolar
Offset
Successive
Approximation
Register
Clock
12-Bit D/A
Converter
Clock
Inhibit
External
Clock
Short
Cycle
Comparator
In
20V Range
10V Range
Reference Out
Serial
Out
Comparator
Clock
Out
Parallel
Data
Output
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 • Cable: BBRCORP • Telex: 066-6491 • FAX: (520) 889-1510 • Immediate Product Info: (800) 548-6132
®
©
1986 Burr-Brown Corporation PDS-694A Printed in U.S.A. October, 1993
Monolithic12-Bit
ANALOG-TO-DIGITAL CONVERTER
FEATURES
l INDUSTRY-STANDARD 12-BIT ADC
l MONOLITHIC CONSTRUCTION
l LOW COST
l ±0.012% LINEARITY
l 25µs max CONVERSION TIME
l ±12V OR ±15V OPERATION
l NO MISSING CODES: –25°C to +85°C
l HERMETIC 32-PIN PACKAGE
l PARALLEL OR SERIAL OUTPUTS
l 705mW max DISSIPATION
DESCRIPTION
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
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.
Bipolar
Offset
Successive
Approximation
Register
Clock
12-Bit D/A
Converter
Clock
Inhibit
External
Clock
Short
Cycle
Comparator
In
20V Range
10V Range
Reference Out
Serial
Out
Comparator
Clock
Out
Parallel
Data
Output
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 • Cable: BBRCORP • Telex: 066-6491 • FAX: (520) 889-1510 • Immediate Product Info: (800) 548-6132
®
©
1986 Burr-Brown Corporation PDS-694A Printed in U.S.A. October, 1993