Texas Instruments ADS8344 Handleiding

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16-Bit, 8-Channel Serial Output Sampling

ANALOG-TO-DIGITAL CONVERTER

FEATURES

●PIN FOR PIN WITH ADS7844

●SINGLE SUPPLY: 2.7V to 5V

●8-CHANNEL SINGLE-ENDED OR

4-CHANNEL DIFFERENTIAL INPUT

●UP TO 100kHz CONVERSION RATE

●84dB SINAD

●SERIAL INTERFACE

●QSOP-20 AND SSOP-20 PACKAGES

APPLICATIONS

●DATA ACQUISITION

●TEST AND MEASUREMENT EQUIPMENT

●INDUSTRIAL PROCESS CONTROL

●PERSONAL DIGITAL ASSISTANTS

●BATTERY-POWERED SYSTEMS

DESCRIPTION

The ADS8344 is an 8-channel, 16-bit, sampling

Analog-to-Digital (A/D) converter with a synchronous serial

interface. Typical power dissipation is 10mW at a 100kHz

throughput rate and a +5V supply. The reference voltage

(V

REF

) can be varied between 500mV and V

CC

, providing a

corresponding input voltage range of 0V to V

REF

. The

device includes a shutdown mode that reduces power dissi-

pation to under 15µW. The ADS8344 is tested down to 2.7V

operation.

Low power, high speed, and an on-board multiplexer make

the ADS8344 ideal for battery-operated systems such as

personal digital assistants, portable multi-channel data log-

gers, and measurement equipment. The serial interface also

provides low-cost isolation for remote data acquisition. The

ADS8344 is available in a QSOP-20 or SSOP-20 package

and is ensured over the –40°C to +85°C temperature range.

CDAC

SAR

Comparator

8-Channel

Multiplexer

Serial

Interface

and

Control

CH4

CH5

CH6

CH7

COM

V

REF

CS

SHDN

D

IN

D

OUT

BUSY

DCLK

CH0

CH1

CH2

CH3

4-Channel

Multiplexer

CH0

CH1

CH2

CH3

COM

ADS8343

ADS8341

ADS8345

ADS8344

¤

ADS8344

¤

A

D

S

8

3

4

4

ADS8344

SBAS139E – SEPTEMBER 2000 – REVISED SEPTEMBER 2006

www.ti.com

PRODUCTION DATA information is current as of publication date.

Products conform to specifications per the terms of Texas Instruments

standard warranty. Production processing does not necessarily include

testing of all parameters.

Copyright © 2000-2006, Texas Instruments Incorporated

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.

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Product specificaties