N ANALOG
-
W DEVICES
FEA TURES
Precision
Sample-and-Hold
with 16-Channel
Multiplexer
III
.
16 Single-Ended
or 8
Differential
Mode Control
True 12-Bit Precision: Nonlinearity
Channels with Switchable
QO.005%
OBS
~
High Speed: 1OilS Acquisition Time to 0.01%
Complete and Calibrated: No Additional Parts Required
Small, Reliable: 32 Pin Hermetic Metal DIP
Versatile: Simple Interface to Popular Analog to Digital
Converters
High Differential Input Impedance
(101擄0)
and Common
Mode Rejection (8OdB)
Fully Protected Multiplexer Inputs
PRODUCT DESCRIPTION
The AD362 is a complete, precision 16-channel data acquisi-
tion system analog input section in hybrid integrated circuit
form. Large-scale linear integrated circuitry, thick- and thin-
film technology and active laser trimming gives the AD362
extensive applications versatility along with full 12-bit
accuracy.
The AD362 contains two 9-channel multiplexers, a differential
amplifier, a sample-and-hold with high-speed output amplifier,
a channel address latch and control logic. The multiplexers may
be connected to the differential amplifier in either an 8-chan-
nel differential or 16-channel single-ended configuration. A
unique featUre of the AD362 is an internal user-controllable
analog switch that connects the multiplexers in either a single-
ended or differential mode. This allows a single device to per-
form in either mode without hard-wire programming and per-
mits a mixtUre of single-ended and differential sources to be
interfaced by dynamically switching the input mode control.
The sample-and-hold mode control is designed to connect
direcdy to the "StatUs" output of an analog to digital con-
verter so that a convert command to the ADC will automati-
cally put the sample-and-hold into the "Hold" mode. A
precision hold capacitor is included with each AD362. The
AD362 output amplifier is capable of driving the unbuffered
analog input of most high-speed, 12-bit successive-approxima-
tion ADCs. Interface is thereby reduced to two simple con-
nections with no additional components required.
When used with a 12-bit, 2S-microsecond ADC such as the
ADS72, ADS74 or AD ADC80, system throughput rate is as
high as 30kHz at full rated accuracy. The AD362KD is specified
for operation over a 0 to +70擄C temperatUre range while the
OLE
TE
AD362SD operates to specification from -55擄C to + 125擄C.
Processing to MIL-STD-883 , Class B is available for the
AD362SD. Both grades are packaged in a hermetic, elec-
trostatically shielded 32-pin metal dual-in-line package.
PRODUCT HIGHLIGHTS
1. The AD362, when used with a precision analog to digital
converter, forms a complete, accurate, high-speed data
acquisition system.
2. The 16-input channels may be configured in single-ended,
differential or a mixtUre of both modes. Mode switching is
provided by a user-controllable internal analog switch.
3. Multiplexers, differential amplifier, sample-and-hold and
high-speed output buffer provide complete analog inter-
facing capabilities.
4. Internal channel address latches are provided to facilitate
interfacing the AD362 to data, address or control buses.
5. All grades of the AD362 are hermetically sealed in rugged
metal DIP packages.
6. A precision hold capacitor is provided with each AD362.
7. The AD362SD is specified over the entire military tem-
peratUre range, -55擄C to +12SoC. Processing to MIL-STD-
883, Class B is available.
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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 parents or other rights of third
parties which may result from its use. No license is granted by implica-
tion or otherwise under any patent or patent rights of Analog Devices.
Route 1 Industrial Park; P.O. Box 280; Norwood, Mass. 02062
Tel: 617/329-4700
TWX: 710/394-6577
West Coast
Mid-West
Texas
714/842-1717
312/894-3300
214/231.5094
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