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Burr-Brown Corporation - 500kHz/ 12-Bit/ 6-Channel Simultaneous Sampling ANALOG-TO-DIGITAL CONVERTER

Numéro de référence ADS7864YB
Description 500kHz/ 12-Bit/ 6-Channel Simultaneous Sampling ANALOG-TO-DIGITAL CONVERTER
Fabricant Burr-Brown Corporation 
Logo Burr-Brown Corporation 





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ADS7864YB fiche technique
ADS7864
ADS7864
SBAS141
500kHz, 12-Bit, 6-Channel
Simultaneous Sampling
ANALOG-TO-DIGITAL CONVERTER
FEATURES
q 6 SIMULTANEOUS SAMPLING CHANNELS
q FULLY DIFFERENTIAL INPUTS
q 2µs TOTAL THROUGHPUT PER CHANNEL
q GUARANTEED NO MISSING CODES
q PARALLEL INTERFACE
q 1MHz EFFECTIVE SAMPLING RATE
q LOW POWER: 50mW
q 6X FIFO
APPLICATIONS
q MOTOR CONTROL
q MULTI-AXIS POSITIONING SYSTEMS
q 3-PHASE POWER CONTROL
DESCRIPTION
The ADS7864 is a dual 12-bit, 500kHz Analog-to-
Digital (A/D) converter with 6 fully differential input
channels grouped into three pairs for high speed simul-
taneous signal acquisition. Inputs to the sample-and-
hold amplifiers are fully differential and are main-
tained differential to the input of the A/D converter.
This provides excellent common-mode rejection of
80dB at 50kHz which is important in high noise
environments.
The ADS7864 offers a parallel interface and control
inputs to minimize software overhead. The output data
for each channel is available as a 16-bit word (address
and data). The ADS7864 is offered in a TQFP-48
package and is fully specified over the –40°C to +85°C
operating range.
HOLDA
CH A0+
CH A0–
HOLDB
CH B0+
CH B0–
HOLDC
CH C1+
CH C1–
REFIN
REFOUT
CH A1+
CH A1–
CH B1+
CH B1–
CH C1+
CH C1–
S/H
Amp
S/H
Amp
S/H
Amp
MUX
S/H
Amp
S/H
Amp
S/H
Amp
MUX
SAR
CDAC
COMP
Internal
2.5V
Reference
CDAC
COMP
SAR
Interface
A2
A1
Conversion
and
Control
A0
BYTE
CLOCK
CS
RD
BUSY
RESET
FIFO
Registers
Channel/
16 Data Output
International Airport Industrial Park • Mailing Address: PO Box 11400, Tucson, AZ 85734 • Street Address: 6730 S. Tucson Blvd., Tucson, AZ 85706 • Tel: (520) 746-1111
Twx: 910-952-1111 • Cable: BBRCORP • Telex: 066-6491 • FAX: (520) 889-1510 • Immediate Product Info: (800) 548-6132
http://www.burr-brown.com/
http://www.ti.com/
Copyright © 2000, Texas Instruments Incorporated
PDS-11581A
ADS7864Printed in U.S.A. September, 2000
®

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