ADS1211
器件描述：24-Bit ANALOG-TO-DIGITAL CONVERTER
器件厂商：BURR-BROWN [Burr-Brown Corporation]
文件大小：557.27KB，共41页
Sponsor by e络盟器件资料摘要：
®
1 ADS1210, 1211
®
ADS1210
ADS1211
24-Bit ANALOG-TO-DIGITAL CONVERTER
FEATURES
l DELTA-SIGMA A/D CONVERTER
l 23 BITS EFFECTIVE RESOLUTION AT 10Hz
AND 20 BITS AT 1000Hz
l DIFFERENTIAL INPUTS
l PROGRAMMABLE GAIN AMPLIFIER
l FLEXIBLE SPI COMPATIBLE SSI
INTERFACE WITH 2-WIRE MODE
l PROGRAMMABLE CUT-OFF FREQUENCY
UP TO 15.6kHz
l INTERNAL/EXTERNAL REFERENCE
l ON CHIP SELF-CALIBRATION
l ADS1211 INCLUDES 4 CHANNEL MUX
DESCRIPTION
The ADS1210 and ADS1211 are precision, wide
dynamic range, delta-sigma analog-to-digital converters
with 24-bit resolution operating from a single +5V
supply. The differential inputs are ideal for direct
connection to transducers or low level voltage sig-
nals. The delta-sigma architecture is used for wide
dynamic range and to guarantee 22 bits of no missing
code performance. An effective resolution of 23 bits
is achieved through the use of a very low-noise input
amplifier at conversion rates up to 10Hz. Effective
resolutions of 20 bits can be maintained up to a
sample rate of 1kHz through the use of the unique
Turbo modulator mode of operation. The dynamic
range of the converters is further increased by provid-
ing a low-noise programmable gain amplifier with a
gain range of 1 to 16 in binary steps.
The ADS1210 and ADS1211 are designed for high
resolution measurement applications in smart trans-
mitters, industrial process control, weigh scales, chro-
matography and portable instrumentation. Both con-
verters include a flexible synchronous serial interface
which is SPI compatible and also offers a two-wire
control mode for low cost isolation.
The ADS1210 is a single channel converter and is
offered in both 18-pin DIP and 18-lead SOIC pack-
ages. The ADS1211 includes a 4 channel input multi-
plexer and is available in 24-pin DIP, 24-lead SOIC,
and 28-lead SSOP packages.
APPLICATIONS
l INDUSTRIAL PROCESS CONTROL
l INSTRUMENTATION
l BLOOD ANALYSIS
l SMART TRANSMITTERS
l PORTABLE INSTRUMENTS
l WEIGH SCALES
l PRESSURE TRANSDUCERS
ADS1211 Only ADS1210/11
ADS1210
ADS1211
ADS1210
ADS1211
ADS1211
PGA
+2.5V
Reference
+3.3V Bias
Generator
Clock Generator
Serial Interface
Second-Order
∆∑
Modulator
Instruction Register
Command Register
Data Output Register
Offset Register
Full-Scale Register
Third-Order
Digital Filter
Micro Controller
Modulator Control
AGND AV
DD
REF
OUT
REF
IN
V
BIAS
X
IN
X
OUT
MODEDSYNC CS DRDY
A
IN
P
A
IN
N
SCLK
DGND
DV
DD
SDIO
SDOUT
MUX
A
IN
1P
A
IN
1N
A
IN
2P
A
IN
2N
A
IN
3P
A
IN
3N
A
IN
4P
A
IN
4N
©
1996 Burr-Brown Corporation PDS-1284E Printed in U.S.A. May, 2000
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/ • Cable: BBRCORP • Telex: 066-6491 • FAX: (520) 889-1510 • Immediate Product Info: (800) 548-6132
1 ADS1210, 1211
®
ADS1210
ADS1211
24-Bit ANALOG-TO-DIGITAL CONVERTER
FEATURES
l DELTA-SIGMA A/D CONVERTER
l 23 BITS EFFECTIVE RESOLUTION AT 10Hz
AND 20 BITS AT 1000Hz
l DIFFERENTIAL INPUTS
l PROGRAMMABLE GAIN AMPLIFIER
l FLEXIBLE SPI COMPATIBLE SSI
INTERFACE WITH 2-WIRE MODE
l PROGRAMMABLE CUT-OFF FREQUENCY
UP TO 15.6kHz
l INTERNAL/EXTERNAL REFERENCE
l ON CHIP SELF-CALIBRATION
l ADS1211 INCLUDES 4 CHANNEL MUX
DESCRIPTION
The ADS1210 and ADS1211 are precision, wide
dynamic range, delta-sigma analog-to-digital converters
with 24-bit resolution operating from a single +5V
supply. The differential inputs are ideal for direct
connection to transducers or low level voltage sig-
nals. The delta-sigma architecture is used for wide
dynamic range and to guarantee 22 bits of no missing
code performance. An effective resolution of 23 bits
is achieved through the use of a very low-noise input
amplifier at conversion rates up to 10Hz. Effective
resolutions of 20 bits can be maintained up to a
sample rate of 1kHz through the use of the unique
Turbo modulator mode of operation. The dynamic
range of the converters is further increased by provid-
ing a low-noise programmable gain amplifier with a
gain range of 1 to 16 in binary steps.
The ADS1210 and ADS1211 are designed for high
resolution measurement applications in smart trans-
mitters, industrial process control, weigh scales, chro-
matography and portable instrumentation. Both con-
verters include a flexible synchronous serial interface
which is SPI compatible and also offers a two-wire
control mode for low cost isolation.
The ADS1210 is a single channel converter and is
offered in both 18-pin DIP and 18-lead SOIC pack-
ages. The ADS1211 includes a 4 channel input multi-
plexer and is available in 24-pin DIP, 24-lead SOIC,
and 28-lead SSOP packages.
APPLICATIONS
l INDUSTRIAL PROCESS CONTROL
l INSTRUMENTATION
l BLOOD ANALYSIS
l SMART TRANSMITTERS
l PORTABLE INSTRUMENTS
l WEIGH SCALES
l PRESSURE TRANSDUCERS
ADS1211 Only ADS1210/11
ADS1210
ADS1211
ADS1210
ADS1211
ADS1211
PGA
+2.5V
Reference
+3.3V Bias
Generator
Clock Generator
Serial Interface
Second-Order
∆∑
Modulator
Instruction Register
Command Register
Data Output Register
Offset Register
Full-Scale Register
Third-Order
Digital Filter
Micro Controller
Modulator Control
AGND AV
DD
REF
OUT
REF
IN
V
BIAS
X
IN
X
OUT
MODEDSYNC CS DRDY
A
IN
P
A
IN
N
SCLK
DGND
DV
DD
SDIO
SDOUT
MUX
A
IN
1P
A
IN
1N
A
IN
2P
A
IN
2N
A
IN
3P
A
IN
3N
A
IN
4P
A
IN
4N
©
1996 Burr-Brown Corporation PDS-1284E Printed in U.S.A. May, 2000
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/ • Cable: BBRCORP • Telex: 066-6491 • FAX: (520) 889-1510 • Immediate Product Info: (800) 548-6132