ADS7821
器件描述：16-Bit 10ms Sampling CMOS ANALOG-to-DIGITAL CONVERTER
器件厂商：BURR-BROWN [Burr-Brown Corporation]
文件大小：280.05KB，共10页
Sponsor by e络盟器件资料摘要：
1
®
ADS7821
FEATURES
l 100kHz min SAMPLING RATE
l 0 to +5V INPUT RANGE
l 86dB min SINAD WITH 20kHz INPUT
l DNL: 16-bits “No Missing Codes”
l SINGLE +5V SUPPLY OPERATION
l PIN-COMPATIBLE WITH 12-BIT ADS7820
l USES INTERNAL OR EXTERNAL
REFERENCE
l FULL PARALLEL DATA OUTPUT
l 100mW max POWER DISSIPATION
l 28-PIN 0.3" PLASTIC DIP AND SOIC
ADS7821
DESCRIPTION
The ADS7821 is a complete 16-bit sampling A/D
using state-of-the-art CMOS structures. It contains a
complete 16-bit, capacitor-based, SAR A/D with S/H,
reference, clock, interface for microprocessor use, and
three-state output drivers.
The ADS7821 is specified at a 100kHz sampling rate,
and guaranteed over the full temperature range. Laser-
trimmed scaling resistors provide a 0 to +5V input
range, with power dissipation under 100mW.
The 28-pin ADS7821 is available in a plastic 0.3" DIP
and in an SOIC, both fully specified for operation over
the –25°C to +85°C range.
16-Bit 10µs Sampling CMOS
ANALOG-to-DIGITAL CONVERTER
®
Successive Approximation Register and Control Logic
Clock
Output
Latches
and
Three
State
Drivers
Three
State
Parallel
Data
Bus
BUSY
Comparator
BYTE
CS
R/C
CDAC
Internal
+2.5V Ref
Buffer
4kΩ
0 to +5V Input
REF
CAP
5kΩ
20kΩ6.66kΩ
©
1996 Burr-Brown Corporation PDS-1323A Printed in U.S.A. June, 1996
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
ADS7821
ADS7821
®
ADS7821
FEATURES
l 100kHz min SAMPLING RATE
l 0 to +5V INPUT RANGE
l 86dB min SINAD WITH 20kHz INPUT
l DNL: 16-bits “No Missing Codes”
l SINGLE +5V SUPPLY OPERATION
l PIN-COMPATIBLE WITH 12-BIT ADS7820
l USES INTERNAL OR EXTERNAL
REFERENCE
l FULL PARALLEL DATA OUTPUT
l 100mW max POWER DISSIPATION
l 28-PIN 0.3" PLASTIC DIP AND SOIC
ADS7821
DESCRIPTION
The ADS7821 is a complete 16-bit sampling A/D
using state-of-the-art CMOS structures. It contains a
complete 16-bit, capacitor-based, SAR A/D with S/H,
reference, clock, interface for microprocessor use, and
three-state output drivers.
The ADS7821 is specified at a 100kHz sampling rate,
and guaranteed over the full temperature range. Laser-
trimmed scaling resistors provide a 0 to +5V input
range, with power dissipation under 100mW.
The 28-pin ADS7821 is available in a plastic 0.3" DIP
and in an SOIC, both fully specified for operation over
the –25°C to +85°C range.
16-Bit 10µs Sampling CMOS
ANALOG-to-DIGITAL CONVERTER
®
Successive Approximation Register and Control Logic
Clock
Output
Latches
and
Three
State
Drivers
Three
State
Parallel
Data
Bus
BUSY
Comparator
BYTE
CS
R/C
CDAC
Internal
+2.5V Ref
Buffer
4kΩ
0 to +5V Input
REF
CAP
5kΩ
20kΩ6.66kΩ
©
1996 Burr-Brown Corporation PDS-1323A Printed in U.S.A. June, 1996
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
ADS7821
ADS7821