250kHz, 16-Bit, 6-Channel

Simultaneous Sampling

ANALOG-TO-DIGITAL CONVERTERS

FEATURES

q 6 INPUT CHANNELS

q FULLY DIFFERENTIAL INPUTS

q 6 INDEPENDENT 16-BIT ADC

q 4

q TESTED NO MISSING CODES TO 14 BITS

q BUFFERED REFERENCE INPUTS

q LOW POWER: 450mW

q TQFP-64 PACKAGE

APPLICATIONS

q MOTOR CONTROL

q MULTI-AXIS POSITIONING SYSTEMS

q 3-PHASE POWER CONTROL

DESCRIPTION

The ADS8364 includes six, 16-bit, 250KHz ADCs (Analog-to-

Digital converters) with 6 fully differential input channels

grouped into two pairs for high-speed simultaneous signal

acquisition. Inputs to the sample-and-hold amplifiers are fully

differential and are maintained differential to the input of the

ADC. This provides excellent common-mode rejection of

80dB at 50KHz that is important in high-noise environments.

The ADS8364 offers a flexible high-speed parallel interface

with a direct address mode, a cycle, and a FIFO mode. The

output data for each channel is available as a 16-bit word.

ADS8364

SBAS219B – JUNE 2002 – REVISED JULY 2004

www.ti.com

Copyright © 2002-2004, 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.

ADS836

4

®

Interface

Conversion

and

Control

FIFO

Register

6x

EOC

FD

CS

WR

RD

Data

Input/Output

16

RESET

BYTE

CLK

CH A0–

CH A0+

CH A1–

CH A1+

SAR

CDAC

S/H

Amp

Comp

CDAC

Comp

S/H

Amp

CH B0–

CH B0+

HOLDA

CH B1–

CH B1+

SAR

CDAC

S/H

Amp

Comp

CDAC

Comp

S/H

Amp

CH C0–

CH C0+

CH C1–

CH C1+

REF

IN

REF

OUT

SAR

CDAC

S/H

Amp

Comp

CDAC

Comp

S/H

Amp

HOLDB

HOLDC

ADD

A2

A1

A0

Internal

2.5V

Reference

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.

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