BurrBrown Products

from Texas Instruments

FEATURES

APPLICATIONS

DESCRIPTION

REF−

+IN

REF+

SDI

SCLK

SDO

CDAC

SAR

COMPARATOR

OUTPUT

LATCH

and

3−STATE

DRIVER

CONVERSION

and

CONTROL

LOGIC

−IN

+IN1

+IN0

COM

NC

OSC

_

+

ADS8328

ADS8327

FS/CS

CONVST

EOC/INT/CDI

ADS8327

ADS8328

SLAS415A – APRIL 2006 – REVISED MAY 2006

LOW POWER, 16-BIT, 500-kHz, SINGLE/DUAL UNIPOLAR INPUT, ANALOG-TO-DIGITAL

CONVERTERS WITH SERIAL INTERFACE

•

Communications

•

2.7-V to 5.5-V Analog Supply, Low Power:

•

Transducer Interface

– 10.6 mW (+VA = 2.7 V, +VBD = 1.8 V)

•

Medical Instruments

•

500-kHz Sampling Rate

•

Magnetometers

•

Excellent DC Performance

•

Industrial Process Control

– ±1.2 LSB Typ, ±2 LSB Max INL

•

Data Acquisition Systems

– ±0.6 LSB Typ, ±1 LSB Max DNL

•

Automatic Test Equipment

– 16-Bit NMC Over Temperature

– ±0.5 mV Max Offset Error at 2.7 V

– ±1 mV Max Offset Error at 5 V

The ADS8327 is a low power, 16-bit, 500-ksps

•

analog-to-digital converter with a unipolar input. The

91 dB SNR, 101 dB SFDR, –98 dB THD

device includes a 16-bit capacitor-based SAR A/D

converter with inherent sample and hold.

•

Built-In Conversion Clock (CCLK)

•

1.65 V to 5.5 V I/O Supply

The ADS8328 is based on the same core and

includes a 2-to-1 input MUX with programmable

– SPI/DSP Compatible Serial

option of TAG bit output. Both the ADS8327 and

– SCLK up to 50 MHz

ADS8328 offer a high-speed, wide voltage serial

•

Comprehensive Power-Down Modes:

interface and are capable of chain mode operation

when multiple converters are used.

– Deep Powerdown

– Nap Powerdown

These converters are available in a 16-lead TSSOP

package and are fully specified for operation over the

– Auto Nap Powerdown

industrial -40°C to +85°C temperature range.

•

•

Software Reset

Low Power, High-Speed SAR Converter Family

•

Global CONVST (Independent of CS)

Type/Speed

500 kHz

1 MHz

•

Programmable Status/Polarity EOC/INT

Single

ADS8327

ADS8329

16 Bit Pseudo-Diff

Dual

ADS8328

ADS8330

•

16-Pin TSSOP Package

•

Multi-Chip Daisy Chain Mode

•

Programmable TAG Bit Output

•

Manual/Auto Channel Select Mode (ADS8328)

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.