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Burr-Brown Corporation - 12-Bit 800kHz Sampling CMOS ANALOG-to-DIGITAL CONVERTER

Numéro de référence ADS7819U
Description 12-Bit 800kHz Sampling CMOS ANALOG-to-DIGITAL CONVERTER
Fabricant Burr-Brown Corporation 
Logo Burr-Brown Corporation 





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ADS7819U fiche technique
®
FPOADS7819
ADS7819
ADS7819
12-Bit 800kHz Sampling CMOS
ANALOG-to-DIGITAL CONVERTER
FEATURES
q 1.25µs THROUGHPUT TIME
q STANDARD ±2.5V INPUT RANGE
q 70dB min SINAD WITH 250kHz INPUT
q ±3/4 LSB max INL AND ±1 LSB max DNL
q INTERNAL REFERENCE
q COMPLETE WITH S/H, REF, CLOCK, ETC.
q PARALLEL DATA w/ LATCHES
q 28-PIN 0.3" PDIP AND SOIC
DESCRIPTION
The ADS7819 is a complete 12-bit sampling A/D
using state-of-the-art CMOS structures. It contains a
complete 12-bit capacitor-based SAR A/D with inher-
ent S/H, reference, clock, interface for microprocessor
use, and three-state output drivers.
The ADS7819 is specified at an 800kHz sampling
rate, and guaranteed over the full temperature range.
Laser-trimmed scaling resistors provide a ±2.5V input
range and inherent overvoltage protection up to ±25V.
The 28-pin ADS7819 is available in a plastic 0.3" DIP
and in an SOIC, both fully specified for operation over
the industrial –40°C to +85°C range.
Clock
Successive Approximation Register and Control Logic
575
±2.5V Input
2.5k
Cap
CDAC
Comparator
Output
Latches
and
Three
State
Drivers
BUSY
Three
State
Parallel
Data
Bus
2.5V Ref Out/In
18k
Buffer
4.8k
8.6k
Internal
Ref
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
© 1992 Burr-Brown Corporation
PDS-1193C
Printed in U.S.A. February, 1995

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