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ADS1212PG4 PDF预览

ADS1212PG4

更新时间： 2024-01-29 12:38:23
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49页 1227K
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22-Bit ANALOG-TO-DIGITAL CONVERTER

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ADS1212PG4 数据手册

 浏览型号ADS1212PG4的Datasheet PDF文件第2页浏览型号ADS1212PG4的Datasheet PDF文件第3页浏览型号ADS1212PG4的Datasheet PDF文件第4页浏览型号ADS1212PG4的Datasheet PDF文件第5页浏览型号ADS1212PG4的Datasheet PDF文件第6页浏览型号ADS1212PG4的Datasheet PDF文件第7页 
A
D
S
1
2
1
2
ADS1212  
ADS1213  
A
D
S
1
2
1
3
A
D
S1212  
A
D
S
1
2
1
3
A
D
S1213  
SBAS064B – JANUARY 1996 – REVISED FEBRUARY 2004  
22-Bit ANALOG-TO-DIGITAL CONVERTER  
DESCRIPTION  
FEATURES  
● DELTA-SIGMA A/D CONVERTER  
● 22 BITS NO MISSING CODES  
The ADS1212 and ADS1213 are precision, wide dynamic  
range, delta-sigma Analog-to-Digital (A/D) converters with  
24-bit resolution operating from a single +5V supply. The  
differential inputs are ideal for direct connection to transduc-  
ers or low-level voltage signals. The delta-sigma architec-  
ture is used for wide dynamic range and to ensure 22 bits of  
no-missing-code performance. An effective resolution of 20  
bits is achieved through the use of a very low-noise input  
amplifier at conversion rates up to 10Hz. Effective resolu-  
tions of 16 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 providing a low-noise programmable gain  
amplifier with a gain range of 1 to 16 in binary steps.  
● 20 BITS EFFECTIVE RESOLUTION AT 10Hz  
AND 16 BITS AT 1000Hz  
● LOW POWER: 1.4mW  
● DIFFERENTIAL INPUTS  
● PROGRAMMABLE GAIN AMPLIFIER  
● SPI™ COMPATIBLE SSI INTERFACE  
● PROGRAMMABLE CUTOFF FREQUENCY  
UP TO 6.25kHz  
● INTERNAL/EXTERNAL REFERENCE  
● ON-CHIP SELF-CALIBRATION  
The ADS1212 and ADS1213 are designed for high-resolution  
measurement applications in smart transmitters, industrial  
process control, weigh scales, chromatography and portable  
instrumentation. Both converters include a flexible synchro-  
nous serial interface that is SPI compatible and also offers a  
two-wire control mode for low-cost isolation.  
● ADS1213 INCLUDES 4-CHANNEL MUX  
APPLICATIONS  
● INDUSTRIAL PROCESS CONTROL  
● INSTRUMENTATION  
● BLOOD ANALYSIS  
The ADS1212 is a single channel converter and is offered in  
both DIP-18 and SO-18 packages. The ADS1213 includes a  
4-channel input multiplexer and is available in DIP-24,  
SO-24, and SSOP-28 packages.  
● SMART TRANSMITTERS  
● PORTABLE INSTRUMENTS  
● WEIGH SCALES  
● PRESSURE TRANSDUCERS  
AGND AVDD REFOUT  
REFIN  
VBIAS  
XIN  
XOUT  
+2.5V  
Reference  
+3.3V Bias  
Generator  
Clock Generator  
DGND  
DVDD  
AIN1P  
A
IN1N  
AIN2P  
IN2N  
IN3P  
AIN3N  
IN4P  
Micro Controller  
AIN  
P
Second-Order  
∆∑  
Modulator  
A
Instruction Register  
Command Register  
Data Output Register  
Offset Register  
Third-Order  
Digital Filter  
PGA  
A
MUX  
A
INN  
Full-Scale Register  
A
AIN4N  
SCLK  
SDIO  
Modulator Control  
Serial Interface  
SDOUT  
DSYNC  
CS  
MODE DRDY  
ADS1213 Only  
ADS1212, 1213  
PATENTS PENDING  
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of  
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.  
All trademarks are the property of their respective owners.  
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.  
Copyright © 1996-2004, Texas Instruments Incorporated  
www.ti.com  
1234567...49

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