ADS7817 Datasheet, PDF (1/15 Pages) Burr-Brown (TI) – 12-Bit Differential Input Micro Power Sampling ANALOG-TO-DIGITAL CONVERTER

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ADS7817
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ADS7817
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12-Bit Differential Input Micro Power Sampling
ANALOG-TO-DIGITAL CONVERTER
FEATURES
q BIPOLAR INPUT RANGE
q TRUE DIFFERENTIAL INPUT
q 200kHz SAMPLING RATE
q MICRO POWER: 2.3mW at 200kHz
q POWER DOWN: 3µA Max
q AVAILABLE IN MSOP-8 PACKAGE
q SERIAL INTERFACE
q AC COMMON-MODE REJECTION
APPLICATIONS
q TRANSDUCER INTERFACE
q BATTERY OPERATED SYSTEMS
q REMOTE DATA ACQUISITION
q ISOLATED DATA ACQUISITION
q AC MOTOR CONTROL
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.
V_REF
+In
–In
S/H Amp
SAR
CDAC
Comparator
Control
Serial
Interface
D_OUT
DCLOCK
CS/SHDN
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©_{1997 Burr-Brown Corporation}
PDS-1369B
Printed in U.S.A., May, 2000