1

FEATURES

DESCRIPTION

APPLICATIONS

CDAC

COMP

SAR

O/P

Drive

I/P

Shift

Reg

ConversionandI/O

ControlLogic

IN+

IN-

REFIN

+VA

+VBD

SDO

SDI

SCLK

CONVST

GND

ADS8318

ADS8318

16-BIT, 500-KSPS, SERIAL INTERFACE MICROPOWER, MINIATURE,

SAR ANALOG-TO-DIGITAL CONVERTER

• 500-kHz Sample Rate

The ADS8318 is a 16-bit, 500-KSPS analog-to-digital

converter. It operates with a 2.048-V to 5.5-V external

• 16-Bit Resolution

reference. The device includes a capacitor based,

• Zero Latency at Full Speed

SAR A/D converter with inherent sample and hold.

• Unipolar, Differential Input, Range: –V

The devices includes a 50-MHz SPI compatible serial

• SPI Compatible Serial Interface with Daisy

interface. The interface is designed to support daisy

Chain Option

chaining or cascading of multiple devices. Also a

• Excellent Performance:

Busy Indicator makes it easy to synchronize with the

digital host.

–

95.2dB SNR Typ at 10-kHz I/P

–

–108dB THD Typ at 10-kHz I/P

The

ADS8318

unipolar

differential

input

range

–

±1.0 LSB Max INL

–

±0.75 LSB Max DNL

Device operation is optimized for very low power

• Low Power Dissipation: 18 mW Typ at 500

operation, and the power consumption directly scales

KSPS

with speed. This feature makes it attractive for lower

• Power Scales Linearly with Speed: 3.6 mW/100

speed applications.

KSPS

It is available in 10-pin MSOP and SON packages.

• Power Dissipation During Power-Down State:

0.25

µW Typ

• 10-Pin MSOP and SON Packages

• Battery Powered Equipments

• Data Acquisition Systems

• Instrumentation and Process Control

• Medical Electronics

• Optical Networking

1

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 © 2008, 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.