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ADAS3022BCPZ

16-Bit, 1 MSPS, 8-Channel, Data Acquisition System

Analog Devices 

Data Sheet

16-Bit, 1 MSPS, 8-Channel,

Data Acquisition System

ADAS3022

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

LFCSP package (6 mm × 6 mm)

LQFP package (7 mm × 7 mm)

−40°C to +85°C industrial temperature range

APPLICATIONS

Multichannel data acquisition and system monitoring

Process control

Power line monitoring

Automated test equipment

Instrumentation

GENERAL DESCRIPTION

The ADAS3022 is a complete 16-bit, 1 MSPS, successive approxi-

mation based analog-to-digital data acquisition system, which 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 program-

mable 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 successive approximation register (SAR)

architecture. The ADAS3022 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 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.

Table 1. Typical Input Range Selection

Signal

Input Range, VIN

Differential

±1 V

±1.28 V

±2.5 V

±2.56 V

±5 V

±5.12 V

±10 V

±10.24 V

Single Ended1

0 V to 1 V

±1.28 V

0 V to 2.5 V

±2.56 V

0 V to 5 V

±5.12 V

0 V to 10 V

±10.24 V

1 See Figure 60 and Figure 61 in the Analog Inputs section for more

information.

DIFF DIFF TO

PAIR

COM

IN0/IN1

IN2/IN3

IN4/IN5

IN6/IN7

IN0

IN1

IN2

IN3

IN4

IN5

IN6

IN7

COM

AUX+

AUX–

FUNCTIONAL BLOCK DIAGRAM

VDDH AVDD DVDD

VIO RESET

PD

ADAS3022

MUX

PGIA

LOGIC/

INTERFACE

PulSAR

ADC

TEMP

SENSOR

BUF

REF

VSSH AGND DGND REFx

Figure 1.

CNV

BUSY

CS

SCK

DIN

SDO

REFIN

Rev. D

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