16-Bit, 1 MSPS, 8-Channel
Enhanced Product
Rev. 0 Document Feedback
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FEATURES
Ease of use—16-bit, 1 MSPS complete data acquisition system
High impedance, 8-channel input: >500 MΩ
Differential input voltage range: ±24.576 V maximum
High input common-mode rejection: >100 dB
User-programmable input ranges
Channel sequencer with individual channel gains
On-chip 4.096 V reference and buffer
Auxiliary input—direct interface to PulSAR® ADC inputs
No latency or pipeline delay (SAR architecture)
Serial 4-wire, 1.8 V to 5 V SPI-/SPORT-compatible interface
40-Lead LFCSP package (6 mm × 6 mm)
ENHANCED FEATURES
Supports defense and aerospace applications (AQEC
standard)
Military temperature range (such as −55°C to +105°C)
Controlled manufacturing baseline
One assembly/test site
Enhanced product change notification
Qualification data available on request
APPLICATIONS
Multichannel data acquisition and system monitoring
Process controls
Power line monitoring
Automated test equipment
Instrumentation
GENERAL DESCRIPTION
The ADAS3022-EP is a complete 16-bit, 1 MSPS, successive
approximation–based, analog-to-digital data acquisition system
that is manufactured on Analog Devices, Inc., proprietary iCMOS®
high voltage industrial process technology. The device integrates
an 8-channel, low leakage multiplexer; a high impedance
programmable gain instrumentation amplifier (PGIA) stage with
high common-mode rejection; a precision, low drift 4.096 V
reference and buffer; and a 16-bit charge redistribution analog-
to-digital converter (ADC) with a successive approximation
register (SAR) architecture. The ADAS3022-EP can resolve eight
single-ended inputs or four fully differential inputs up to
±24.576 V when using ±15 V supplies. In addition, the device
can accept the commonly used bipolar differential, bipolar
single-ended, pseudo bipolar, or pseudo unipolar input signals,
as shown in Table 1, thus enabling the use of almost any direct
sensor interface.
The ADAS3022-EP simplifies design challenges by eliminating
signal buffering, level shifting, amplification/attenuation,
common-mode rejection, settling time, and any other analog
signal conditioning challenge while allowing a smaller form
factor, faster time to market, and lower cost.
Additional application and technical information can be found
in the ADAS3022 data sheet.
Table 1. Typical Input Range Selection
Signal (V) Input Range, V
IN
(V)
Differential
±1 ±1.28
±2.5 ±2.56
Single Ended
0 to 1 ±1.28
0 to 2.5 ±2.56
0 to 5 ±5.12
0 to 10 ±10.24
