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    首页产品索引ADS7890

    ADS7890

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    具有 Ref 引脚的 2.7V-5.25V 数字 5V 模拟 14 位 1.25MSP 串行 ADC

    制造商:TI

    中文数据手册

    产品信息

    描述The ADS7890 is a 14-bit 1.25-MSPS A-to-D converter with 2.5-V internal reference. The device includes acapacitor based SAR A/D converter with inherent sample and hold. The device offers a 14-bit serial SPI or DSPcompatible interface. The device has a pseudo-differential input stage. The –IN swing of ±200 mV is useful to compensate for ground voltage mismatch between the ADC and sensorand also to cancel common-mode noise. The device operates at lower power when used at lower conversionrates because of the nap feature. The device is available in a 48-pin TQFP package.特性1.25 MHz Sample Rate, 14-Bit Resolution Zero Latency Unipolar, Pseudo Differential Input, Range: 0 V to 2.5 V SPI™ Compatible Serial Interface 77.5 dB SNR and –95 dB THD at 0.5 MHz I/P Power Dissipation 45 mW at 1.25 MSPS Nap Mode (10 mW Power Dissipation) Power Down (10 µW) Internal Reference Internal Reference Buffer 48-Pin TQFP Package APPLICATIONS Optical Networking (DWDM, MEMS Based Switching) Spectrum Analyzers High Speed Data Acquisition Systems High Speed Close-Loop Systems TelecommunicationSPI is a trademark of Motorola, Inc.

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