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ADS1211U-1K bảng dữ liệu(PDF) 1 Page - Texas Instruments |
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ADS1211U-1K bảng dữ liệu(HTML) 1 Page - Texas Instruments |
1 / 50 page ADS1210 ADS1211 24-Bit ANALOG-TO-DIGITAL CONVERTER FEATURES q DELTA-SIGMA A/D CONVERTER q 23 BITS EFFECTIVE RESOLUTION AT 10Hz AND 20 BITS AT 1000Hz q DIFFERENTIAL INPUTS q PROGRAMMABLE GAIN AMPLIFIER q FLEXIBLE SPI™-COMPATIBLE SSI INTERFACE WITH 2-WIRE MODE q PROGRAMMABLE CUT-OFF FREQUENCY UP TO 15.6kHz q INTERNAL/EXTERNAL REFERENCE q ON-CHIP SELF-CALIBRATION q ADS1211 INCLUDES 4-CHANNEL MUX DESCRIPTION The ADS1210 and ADS1211 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 23 bits is achieved through the use of a very low-noise input amplifier at conversion rates up to 10Hz. Effective resolu- tions 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 providing 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 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. The ADS1210 is a single-channel converter and is offered in both 18-pin DIP and 18-lead SOIC packages. The ADS1211 includes a 4-channel input multiplexer and is available in 24- pin DIP, 24-lead SOIC, and 28-lead SSOP packages. APPLICATIONS q INDUSTRIAL PROCESS CONTROL q INSTRUMENTATION q BLOOD ANALYSIS q SMART TRANSMITTERS q PORTABLE INSTRUMENTS q WEIGH SCALES q PRESSURE TRANSDUCERS ADS12 10 ADS1 211 ADS1 210 ADS1211 ADS1 211 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 MODE DSYNC ADS1211 Only ADS1210/11 CS DRDY A INP A INN SCLK DGND DV DD SDIO SDOUT MUX A IN1P A IN1N A IN2P A IN2N A IN3P A IN3N A IN4P A IN4N SBAS034B – JANUARY 1996 – REVISED SEPTEMBER 2005 www.ti.com 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 © 1996-2005, Texas Instruments Incorporated 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. |
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Mô tả tương tự - ADS1211U-1K |
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