16-Bit, 100 kSPS/200 kSPS
BiCMOS A/D Converters
a
AD976/AD976A
FEATURES
FUNCTIONAL BLOCK DIAGRAM
Fast 16-Bit ADC
V
REF
AGND1
ANA
200 kSPS Throughput – AD976A
100 kSPS Throughput – AD976
Single 5 V Supply Operation
Input Range: ؎10 V
100 mW Max Power Dissipation
Choice of External or Internal 2.5 V Reference
High Speed Parallel Interface
On-Chip Clock
4k⍀
2.5V
CAP
REFERENCE
R
AD976/AD976A
4R
V
IN
D15
D0
SWITCHED
CAP ADC
PARALLEL
INTERFACE
4R
3
AGND2
28-Lead Skinny DIP, SSOP or SOIC Packages
CONTROL LOGIC &
INTERNAL CALIBRATION CIRCUITRY
V
CLOCK
DIG
DGND
BYTE
R/C
CS
BUSY
R = 6k⍀ AD976
R = 3k⍀ AD976A
GENERAL DESCRIPTION
PRODUCT HIGHLIGHTS
The AD976/AD976A is a high speed, low power 16-bit A/D
converter that operates from a single 5 V supply. The part con-
tains a successive approximation, switched capacitor ADC, an
internal 2.5 V reference and a high speed parallel interface. The
ADC is factory calibrated to minimize all linearity errors. The
analog full-scale input is the standard industrial range of ±10 V.
1. Fast Throughput.
The AD976/AD976A is a high speed (100 kSPS/200 kSPS
throughput rates respectively), 16-bit ADC based on a
switched capacitor architecture.
2. Single-Supply Operation.
The AD976/AD976A operates from a single 5 V supply and
dissipates only 100 mW max.
The AD976/AD976A is comprehensively tested for ac param-
eters such as SNR and THD, as well as the more traditional
parameters of offset, gain and linearity.
3. Comprehensive DC and AC Specifications.
The AD976/AD976A is factory calibrated and fully tested for
SNR and THD as well as the traditional specifications of
offset, gain and linearity.
The AD976/AD976A is fabricated on Analog Devices’ propri-
etary BiCMOS process, which has high performance bipolar
devices along with CMOS transistors.
4. Complete A/D Solution.
The AD976/AD976A is available in skinny 28-lead DIP, SSOP
and SOIC packages.
The AD976/AD976A offers a highly integrated solution
containing an accurate ADC, reference and on-chip clock.
REV. C
Information furnished by Analog Devices is believed to be accurate and
reliable. However, no responsibility is assumed by Analog Devices for its
use, nor for any infringements of patents or other rights of third parties
which may result from its use. No license is granted by implication or
otherwise under any patent or patent rights of Analog Devices.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781/329-4700
Fax: 781/326-8703
World Wide Web Site: http://www.analog.com
© Analog Devices, Inc., 1999