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ADS1213E Datasheet(PDF) 1 Page - Burr-Brown (TI) |
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ADS1213E Datasheet(HTML) 1 Page - Burr-Brown (TI) |
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1 / 49 page  22-Bit ANALOG-TO-DIGITAL CONVERTER FEATURES q DELTA-SIGMA A/D CONVERTER q 22 BITS NO MISSING CODES q 20 BITS EFFECTIVE RESOLUTION AT 10Hz AND 16 BITS AT 1000Hz q LOW POWER: 1.4mW q DIFFERENTIAL INPUTS q PROGRAMMABLE GAIN AMPLIFIER q SPI™ COMPATIBLE SSI INTERFACE q PROGRAMMABLE CUTOFF FREQUENCY UP TO 6.25kHz q INTERNAL/EXTERNAL REFERENCE q ON-CHIP SELF-CALIBRATION q ADS1213 INCLUDES 4-CHANNEL MUX DESCRIPTION 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. 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. 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. APPLICATIONS q INDUSTRIAL PROCESS CONTROL q INSTRUMENTATION q BLOOD ANALYSIS q SMART TRANSMITTERS q PORTABLE INSTRUMENTS q WEIGH SCALES q PRESSURE TRANSDUCERS ADS12 12 ADS1 213 ADS1212 ADS1 213 ADS1213 ADS1212 ADS1213 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 CS DRDY A INP A INN SCLK DGND DV DD SDIO SDOUT MUX ADS1213 Only ADS1212, 1213 A IN1P A IN1N A IN2P A IN2N A IN3P A IN3N A IN4P A IN4N PATENTS PENDING www.ti.com Copyright © 1996-2004, 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. SBAS064B – JANUARY 1996 – REVISED FEBRUARY 2004 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. |
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