BurrBrown Products

from Texas Instruments

FEATURES

APPLICATIONS

DESCRIPTION

CDAC

Output

Latches

and

3-State

Drivers

BYTE

16-/8-Bit

ParallelData

OutputBus

SAR

Conversion

and

ControlLogic

Comparator

Clock

+IN

−IN

REFIN

CONVST

BUSY

CS

RD

4.096-V

InternalReference

REFOUT

RESET/PD1

PD2

COMMOUT

½

TempSensor

TEMPOUT

ADS8422

SLAS512B – JUNE 2006 – REVISED DECEMBER 2006

16-BIT, 4-MSPS, PSEUDO-BIPOLAR, FULLY DIFFERENTIAL INPUT, MICROPOWER

SAMPLING ANALOG-TO-DIGITAL CONVERTER WITH PARALLEL INTERFACE,

REFERENCE

• DWDM

• Fully Differential Input with Pseudo-Bipolar

Input Range -4 V to +4 V

• Instrumentation

• High-Speed, High-Resolution, Zero Latency

• 16-Bit NMC at 4 MSPS

Data Acquisition Systems

• 1 LSB INL Typ

• Transducer Interface

• 92dB SNR, -102dB THD Typ with 100-kHz

• Medical Instruments

Input

• Spectrum Analysis

• Internal 4.096-V Reference and Reference

• ATE

Buffer

• REFIN/2 Available for Setting Analog Input

Common-Mode Voltage

The ADS8422 is a 16-bit, 4-MHz A/D converter with

• Zero Latency

an internal 4.096-V reference. The device includes a

• High-Speed Parallel Interface

16-bit capacitor-based multi-bit SAR A/D converter

• Single Supply Operation Capability

with inherent sample and hold. This converter

includes a full 16-bit interface and an 8-bit option

• Low Power: 155 mW at 4 MHz Typ, Flexible

where data is read using two 8-bit read cycles if

Power-Down Scheme

necessary.

• Pin-Out Similar to ADS8412/8402

The ADS8422 has a fully differential, pseudo-bipolar

• 48-Pin 9×9 TQFP Package

input. It is available in a 48-lead TQFP package and

is characterized over the industrial -40

°C to +85°C

temperature range.

TYPE/SPEED

500 kHz

~600 kHz

750 kHz

1 MHz

1.25 MHz

2 MHz

3 MHz

4MHz

ADS8383

ADS8381

ADS8481

18-Bit Pseudo-Diff

ADS8380 (s)

18-Bit Pseudo-Bipolar, Fully Diff

ADS8382 (s)

ADS8482

ADS8370 (s)

ADS8371

ADS8471

ADS8401

ADS8411

16-Bit Pseudo-Diff

ADS8327/28 (s)

ADS8372 (s)

ADS8329/30 (s)

ADS8405

ADS8410 (s)

ADS8472

ADS8402

ADS8412

ADS8422

16-Bit Pseudo-Bipolar, Fully Diff

ADS8406

ADS8413 (s)

14-Bit Pseudo-Diff

ADS7890 (s)

ADS7891

12-Bit Pseudo-Diff

ADS7886

ADS7883

ADS7881

(1)

S: Serial

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas

Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

PRODUCTION DATA information is current as of publication date.

Copyright © 2006, Texas Instruments Incorporated

Products conform to specifications per the terms of the Texas

Instruments standard warranty. Production processing does not

necessarily include testing of all parameters.