BurrBrown Products

from Texas Instruments

FEATURES

APPLICATIONS

DESCRIPTION

CDAC

_

+

Output

Latches

and

3-State

Drivers

BYTE

16-/8-Bit

Parallel DATA

Output Bus

SAR

Conversion

and

Control Logic

Comparator

Clock

+IN

−IN

REFIN

CONVST

BUSY

CS

RD

RESET

4.096-V

Internal

Reference

REFOUT

ADS8405

SLAS427 – DECEMBER 2004

16-BIT, 1.25-MSPS, UNIPOLAR PSEUDO-DIFFERENTIAL INPUT, MICROPOWER

SAMPLING ANALOG-TO-DIGITAL CONVERTER WITH PARALLEL INTERFACE

•

DWDM

•

•

Instrumentation

•

16-Bit NMC at 1.25 MSPS

•

High-Speed, High-Resolution, Zero Latency

•

±2 LSB INL Max, -1/+1.5 LSB DNL

Data Acquisition Systems

•

86 dB SNR, -90 dB THD at 100 kHz Input

•

Transducer Interface

•

Zero Latency

•

Medical Instruments

•

Internal 4.096-V Reference

•

Communications

•

High-Speed Parallel Interface

•

Single 5-V Analog Supply

•

Wide I/O Supply: 2.7 V to 5.25 V

The ADS8405 is a 16-bit, 1.25-MHz A/D converter

with an internal 4.096-V reference. The device in-

•

Low Power: 155 mW at 1.25 MHz Typ

cludes a 16-bit capacitor-based SAR A/D converter

•

Pin Compatible With ADS8411/8401

with inherent sample and hold. The ADS8405 offers a

•

48-Pin TQFP Package

full 16-bit interface and an 8-bit option where data is

read using two 8-bit read cycles if necessary.

The ADS8405 has a unipolar pseudo-differential in-

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

characterized over the industrial -40

°C to 85°C tem-

perature range.

High Speed SAR Converter Family

Type/Speed

500 kHz

~600 kHz

750 kHz

1 MHz

1.25 MHz

2 MHz

3 MHz

4 MHz

ADS8383

ADS8381

18-Bit Pseudo-Diff

ADS8380 (S)

18-Bit Pseudo-Bipolar, Fully Diff

ADS8382 (S)

16-Bit Pseudo-Diff

ADS8371

ADS8401/05

ADS8411

16-Bit Pseudo-Bipolar, Fully Diff

ADS8402/06

ADS8412

14-Bit Pseudo-Diff

ADS7890 (S)

ADS7891

12-Bit Pseudo-Diff

ADS7886

ADS7881

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 © 2004, 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.