ADS7824
器件描述：4 Channel, 12-Bit Sampling CMOS A/D Converter
器件厂商：BURR-BROWN [Burr-Brown Corporation]
文件大小：344.14KB，共16页
Sponsor by e络盟器件资料摘要：
1
®
ADS7824
CDAC
6kΩ
Internal
+2.5V Ref
Clock
BUSY
DATACLK
SDATA
D7-D0
BYTE
R/C
CS
PWRD
Successive Approximation Register
and Control Logic
Serial
Data
Out
or
Parallel
Data
Out
Comparator
Buffer
Continuous Conversion Channel
REF
CAP
A0CONTC A1
40kΩ
AIN
2
40kΩ
AIN
1
40kΩ
AIN
0
40kΩ
AIN
3
20kΩ 8kΩ
20kΩ 8kΩ
20kΩ 8kΩ
20kΩ 8kΩ
8
4 Channel, 12-Bit Sampling CMOS A/D Converter
FEATURES
l 25µs max SAMPLING AND CONVERSION
l SINGLE +5V SUPPLY OPERATION
l PIN-COMPATIBLE WITH 16-BIT ADS7825
l PARALLEL AND SERIAL DATA OUTPUT
l 28-PIN 0.3" PLASTIC DIP AND SOIC
l ±0.5 LSB max INL AND DNL
l 50mW max POWER DISSIPATION
l 50µW POWER DOWN MODE
l ±10V INPUT RANGE, FOUR CHANNEL
MULTIPLEXER
l CONTINUOUS CONVERSION MODE
ADS7824
DESCRIPTION
The ADS7824 can acquire and convert 12 bits to
within ±0.5 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 ADS7824 is a
low-power 12-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 ADS7824
is available in a plastic 0.3" DIP and in a SOIC, both
fully specified for operation over the industrial –40°C
to +85°C range.
®
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
ADS7824
ADS7824
www.burr-brown.com/databook/ADS7824.html
©
1996 Burr-Brown Corporation PDS-1303B Printed in U.S.A. October, 1997
®
ADS7824
CDAC
6kΩ
Internal
+2.5V Ref
Clock
BUSY
DATACLK
SDATA
D7-D0
BYTE
R/C
CS
PWRD
Successive Approximation Register
and Control Logic
Serial
Data
Out
or
Parallel
Data
Out
Comparator
Buffer
Continuous Conversion Channel
REF
CAP
A0CONTC A1
40kΩ
AIN
2
40kΩ
AIN
1
40kΩ
AIN
0
40kΩ
AIN
3
20kΩ 8kΩ
20kΩ 8kΩ
20kΩ 8kΩ
20kΩ 8kΩ
8
4 Channel, 12-Bit Sampling CMOS A/D Converter
FEATURES
l 25µs max SAMPLING AND CONVERSION
l SINGLE +5V SUPPLY OPERATION
l PIN-COMPATIBLE WITH 16-BIT ADS7825
l PARALLEL AND SERIAL DATA OUTPUT
l 28-PIN 0.3" PLASTIC DIP AND SOIC
l ±0.5 LSB max INL AND DNL
l 50mW max POWER DISSIPATION
l 50µW POWER DOWN MODE
l ±10V INPUT RANGE, FOUR CHANNEL
MULTIPLEXER
l CONTINUOUS CONVERSION MODE
ADS7824
DESCRIPTION
The ADS7824 can acquire and convert 12 bits to
within ±0.5 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 ADS7824 is a
low-power 12-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 ADS7824
is available in a plastic 0.3" DIP and in a SOIC, both
fully specified for operation over the industrial –40°C
to +85°C range.
®
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
ADS7824
ADS7824
www.burr-brown.com/databook/ADS7824.html
©
1996 Burr-Brown Corporation PDS-1303B Printed in U.S.A. October, 1997