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首页产品索引ADS8508

ADS8508

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具有串行接口的 12 位 250kHz CMOS 模数转换器,2.5V 内部参考

制造商:TI

中文数据手册

产品信息

描述The ADS8508 is a complete 12-bit sampling analog-to-digital (A/D) converter using state-of-the-art CMOS structures. It contains a complete 12-bit, capacitor-based, successive approximation register (SAR) A/D converter with sample-and-hold, reference, clock, and a serial data interface. Data can be output using the internal clock or can be synchronized to an external data clock. The ADS8508 also provides an output synchronization pulse for ease of use with standard DSP processors. The ADS8508 is specified at a 250-kHz sampling rate over the full temperature range. Precision resistors provide various input ranges including ±10 V and 0 V to 5 V, while the innovative design allows operation from a single +5-V supply with power dissipation under 100 mW. The ADS8508 is available in a 20-pin SO package, fully specified for operation over the industrial -40°C to 85°C temperature range.特性250-kHz SamplingRate 4-V, 5-V, 10-V, ±3.33-V, ±5-V, and ±10-V Input Ranges 73-dB SINAD With 45-kHz Input ±0.45 LSB Max INL ±0.45 LSB Max DNL, 12-Bits No Missing Codes ±1 LSB Bipolar Zero Errors ±0.4 PPM/°C Bipolar Zero Error Drift Six Specified Input Ranges SPI Compatible Serial Output with Daisy-Chain (TAG) Feature 5-V Supply Pin-Compatible With ADS7808 (Low Speed) and 16-Bit ADS8509/7809 Uses Internal or External Reference 70-mW Typ Power Dissipation at 250 KSPS 20-Pin SO Package Simple DSP Interface APPLICATIONS Industrial Process Control Data Acquisition Systems Digital Signal Processing Medical Equipment Instrumentation

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