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ADS7825_14 Datasheet, PDF (1/22 Pages) Texas Instruments – 4 Channel, 16-Bit Sampling CMOS A/D Converter | |||
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ADS7825
ADS7825
ADS7825
www.burr-brown.com/databook/ADS7825.html
4 Channel, 16-Bit Sampling CMOS A/D Converter
FEATURES
q 25µs max SAMPLING AND CONVERSION
q SINGLE +5V SUPPLY OPERATION
q PIN-COMPATIBLE WITH 12-BIT ADS7824
q PARALLEL AND SERIAL DATA OUTPUT
q 28-PIN 0.3" PLASTIC DIP AND SOIC
q ±2.0 LSB max INL
q 50mW max POWER DISSIPATION
q 50µW POWER DOWN MODE
q ±10V INPUT RANGE, FOUR CHANNEL
MULTIPLEXER
q CONTINUOUS CONVERSION MODE
DESCRIPTION
The ADS7825 can acquire and convert 16 bits to
within ±2.0 LSB in 25µs max while consuming only
50mW max. Laser-trimmed scaling resistors provide
the standard industrial ±10V input range and channel-
to-channel matching of ±0.1%. The ADS7825 is a
low-power 16-bit sampling A/D with a four channel
input multiplexer, S/H, clock, reference, and a
parallel/serial microprocessor interface. It can be con-
figured in a continuous conversion mode to sequen-
tially digitize all four channels. The 28-pin ADS7825
is available in a plastic 0.3" DIP and in a SOIC, both
fully specified for operation over the industrial â40°C
to +85°C range.
SBAS045
AIN0
AIN1
AIN2
AIN3
40kâ¦
20kâ¦
40kâ¦
20kâ¦
40kâ¦
20kâ¦
40kâ¦
20kâ¦
Continuous Conversion
Channel
CONTC
A0
A1
R/C
Clock
8kâ¦
Successive Approximation Register
and Control Logic
CS
PWRD
CDAC
8kâ¦
8kâ¦
8kâ¦
CAP
REF
Buffer
6kâ¦
Internal
+2.5V Ref
Comparator
Serial
Data
Out
or
Parallel
Data
8
Out
BUSY
DATACLK
SDATA
D7-D0
BYTE
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/ ⢠FAXLine: (800) 548-6133 (US/Canada Only) ⢠Cable: BBRCORP ⢠Telex: 066-6491 ⢠FAX: (520) 889-1510 ⢠Immediate Product Info: (800) 548-6132
©1996 Burr-Brown Corporation
PDS-11304B
®
APriDnteSd in7U8.S2.A5. October, 1997
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