®
ADS
781
7
OPA
658
ADS
781
7
ADS7817
For most current data sheet and other product
information, visit www.burr-brown.com
12-Bit Differential Input Micro Power Sampling
ANALOG-TO-DIGITAL CONVERTER
FEATURES
q
BIPOLAR INPUT RANGE
q
TRUE DIFFERENTIAL INPUT
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200kHz SAMPLING RATE
q
MICRO POWER: 2.3mW at 200kHz
q
POWER DOWN: 3
µ
A Max
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AVAILABLE IN MSOP-8 PACKAGE
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SERIAL INTERFACE
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AC COMMON-MODE REJECTION
DESCRIPTION
The ADS7817 is a 12-bit, 200kHz sampling analog-
to-digital converter (A/D) that features a high imped-
ance fully differential analog input. The reference
voltage can be varied from 100mV to 2.5V, with a
corresponding input-referred resolution between 49µV
and 1.22mV.
The differential input, low power, automatic power
down, and small size make the ADS7817 ideal for
direct connection to transducers in battery operated
systems, remote data acquisition, or multi-channel
applications. The ADS7817 is available in a plastic
mini-DIP-8, an SOIC-8, or an MSOP-8 package.
APPLICATIONS
q
TRANSDUCER INTERFACE
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BATTERY OPERATED SYSTEMS
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REMOTE DATA ACQUISITION
q
ISOLATED DATA ACQUISITION
q
AC MOTOR CONTROL
SAR
Control
V
REF
D
OUT
+In
CDAC
–In
S/H Amp
Comparator
Serial
Interface
DCLOCK
CS/SHDN
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 • Internet: http://www.burr-brown.com/ • Cable: BBRCORP • Telex: 066-6491 • FAX: (520) 889-1510 • Immediate Product Info: (800) 548-6132
©
1997 Burr-Brown Corporation
PDS-1369B
Printed in U.S.A., May, 2000
BURR-BROWN [ BURR-BROWN CORPORATION ]
