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| TI ADS8317高速数据采集应用方案 | |||||
作者：TI 方案来源：TI 点击数： 更新时间：2007-12-27  |
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TI 16-Bit, High-Speed, 2.7V to 5.5V microPower Sampling ADC The ADS8317 is a 16-bit, sampling, analog-to-digital (A/D) converter specified for a supply voltage range from 2.7V to 5.5V. It requires very little power, even when operating at the full data rate. At lower data rates, the high speed of the device enables it to spend most of its time in the power-down mode. For example, the average power dissipation is less than 0.2mW at a 10kHz data rate. The ADS8317 offers excellent linearity and very low noise and distortion. It also features a synchronous serial (SPI/SSI-compatible) interface and a differential input. The reference voltage can be set to any level within the range of 0.1V to VDD/2. Low power and small size make the ADS8317 ideal for portable and battery-operated systems. It is also an excellent fit for remote data-acquisition modules, simultaneous multichannel systems, and isolated data acquisition. The ADS8317 is available in MSOP-8 and SON-8 packages. The SON package size is the same as a 3x3 QFN package.  FEATURES 2 16 Bits No Missing Codes (Full-Supply Range, High or Low Grade) Very Low Noise: 5LSBPP Excellent Linearity: ±0.8LSB typ, ±1.5LSB max INL +0.7LSB typ, +1.25LSB max DNL ±1mV max Offset ±16LSB typ Gain Error microPower: 10mW at 5V, 250kHz 4mW at 2.7V, 200kHz 2mW at 2.7V, 100kHz 0.2mW at 2.7V, 10kHz MSOP-8 Package(SON-8 package available Q1, 2008; package size same as 3x3 QFN) Pin-Compatible with the ADS8321 Serial (SPI™/SSI) Interface APPLICATIONS Battery-Operated Systems Remote Data Acquisition Isolated Data Acquisition Simultaneous Sampling, Multichannel Systems Industrial Controls Robotics Vibration Analysis  图1.器件方框图.  图2.ADS8317基本的数据采集系统案例. 详情请见: http://focus.ti.com/lit/ds/symlink/ads8317.pdf |
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