ADS7852_14 Datasheet, PDF (1/19 Pages) Texas Instruments – 12-Bit, 8-Channel, Parallel Output ANALOG-TO-DIGITAL CONVERTER

ADS7852 ®
ADS7852
SBAS111C – JANUARY 1998 – REVISED JULY 2004
12-Bit, 8-Channel, Parallel Output
ANALOG-TO-DIGITAL CONVERTER
FEATURES
q 2.5V INTERNAL REFERENCE
q 8 INPUT CHANNELS
q 500kHz SAMPLING RATE
q SINGLE 5V SUPPLY
q ±1LSB: INL, DNL
q NO MISSING CODES
q 70dB SINAD
q LOW POWER: 13mW
q TQFP-32 PACKAGE
APPLICATIONS
q DATA ACQUISITION
q TEST AND MEASUREMENT
q INDUSTRIAL PROCESS CONTROL
q MEDICAL INSTRUMENTS
DESCRIPTION
The ADS7852 is an 8-channel, 12-bit Analog-to-Digital
(A/D) converter complete with sample-and-hold, internal 2.5V
reference and a full 12-bit parallel output interface. Typical
power dissipation is 13mW at 500kHz throughput rate. The
ADS7852 features both a nap mode and a sleep mode, further
reducing the power consumption to 2mW. The input range is
from 0V to twice the reference voltage. The reference voltage
can be overdriven by an external voltage.
The ADS7852 is ideal for multi-channel applications where
low power and small size are critical. Medical instrumenta-
tion, high-speed data acquisition and laboratory equipment
are just a few of the applications that would take advantage of
the special features offered by the ADS7852. The ADS7852
is available in an TQFP-32 package and is fully specified and
ensured over the –40°C to +85°C temperature range.
A0 A1 A2
AIN0
AIN1
AIN2
AIN3
AIN4
AIN5
AIN6
AIN7
8-Channel
MUX
V_REF
ADS7852
SAR
CDAC
Comparator
Buffer
10kΩ
Internal
+2.5V Ref
Output
Latches
and
3-State
Drivers
3-State
Parallel
Data Bus
CLK
BUSY
WR
CS
RD
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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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