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ADS8861IDGS bảng dữ liệu(PDF) 1 Page - Texas Instruments |
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ADS8861IDGS bảng dữ liệu(HTML) 1 Page - Texas Instruments |
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1 / 48 page  GND REF ADS8861 AINP AINM AVDD DVDD DIN SCLK DOUT CONVST 0 V - VREF VCM VREF 0 V 0 V VREF +VREF -VREF VCM VDIFF 0 V - VREF 2.5 V to 5 V 2.7 V to 3.6 V Traditional Input Range ADS8861 Input Range True-Differential Input Range VREF/2 2.7 V to 3.6 V ADS8861 www.ti.com SBAS557A – MAY 2013 – REVISED DECEMBER 2013 16-Bit, 1-MSPS, Serial Interface, microPower, Miniature, True-Differential Input, SAR Analog-to-Digital Converter Check for Samples: ADS8861 1 FEATURES APPLICATIONS 234 • Sample Rate: 1 MHz • Automatic Test Equipment (ATE) • No Latency Output • Instrumentation and Process Controls • Unipolar, True-Differential Input Range: • Precision Medical Equipment –VREF to +VREF • Low-Power, Battery-Operated Instruments • Wide Common-Mode Voltage Range: 0 V to VREF with 90-dB CMRR (min) DESCRIPTION The ADS8861 is a 16-bit, 1-MSPS, true-differential • SPI™-Compatible Serial Interface with input, analog-to-digital converter (ADC). The device Daisy-Chain Option operates with a 2.5-V to 5-V external reference, • Excellent AC and DC Performance: offering a wide selection of signal ranges without – SNR: 96 dB, THD: –115 dB additional input signal scaling. The reference voltage setting is independent of, and can exceed, the analog – INL: ±1.0 LSB (max) supply voltage (AVDD). – DNL: ±1.0 LSB (max), 16-Bit NMC The device offers an SPI-compatible serial interface • Wide Operating Range: that also supports daisy-chain operation for – AVDD: 2.7 V to 3.6 V cascading multiple devices. An optional busy- – DVDD: 2.7 V to 3.6 V indicator bit makes synchronizing with the digital host (Independent of AVDD) easy. – REF: 2.5 V to 5 V (Independent of AVDD) The device supports unipolar, true-differential analog – Operating Temperature: –40°C to +85°C input signals with a differential input swing of –VREF to +VREF. This true-differential analog input structure • Low-Power Dissipation: allows for a common-mode voltage of any value in – 5.5 mW at 1 MSPS the range of 0 V to +VREF (when both inputs are – 0.55 mW at 100 kSPS within the operating input range of –0.1 V to VREF + 0.1 V). – 55 µW at 10 kSPS • Power-Down Current (AVDD): 50 nA Device operation is optimized for very low-power operation. Power consumption directly scales with • Full-Scale Step Settling to 16 Bits: 290 ns speed. This feature makes the ADS8861 excellent for • Packages: MSOP-10 and SON-10 lower-speed applications. 1 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. 2 TINA is a trademark of Texas Instruments Inc.. 3 SPI is a trademark of Motorola Inc. 4 All other trademarks are the property of their respective owners. PRODUCTION DATA information is current as of publication date. Copyright © 2013, Texas Instruments Incorporated Products conform to specifications per the terms of the Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters. |
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