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ADS808-12 位 70MSPS ADC，具有单端/差动输入、内部/外部参考、灵活时钟、可选择全范围和断电功能
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TI产品 - ADS808介绍

ADS808 - 12 位 70MSPS ADC，具有单端/差动输入、内部/外部参考、灵活时钟、可选择全范围和断电功能

ADS808是TI德州仪器公司的一款高速ADC(>10MSPS)产品，ADS808是12 位 70MSPS ADC，具有单端/差动输入、内部/外部参考、灵活时钟、可选择全范围和断电功能，本站介绍了ADS808的封装应用图解、特点和优点、功能等，并给出了与ADS808相关的TI元器件型号供参考。

ADS808 - 12 位 70MSPS ADC，具有单端/差动输入、内部/外部参考、灵活时钟、可选择全范围和断电功能 - 高速ADC(>10MSPS) - 模数转换器 - 德州仪器

产品描述

The ADS808 is a high-dynamic range, 12-bit, 70MHz, pipelined Analog-to-Digital Converter (ADC). It includes a high-bandwidth linear track-and-hold that has a low jitter of only 0.25ps rms, leading to excellent SNR performance. The clock input can accept a low-level differential sine wave or square wave signal down to 0.5Vp-p, further improving the SNR performance. It also accepts a single-ended clock signal and has flexible threshold levels.

The ADS808 has a 2Vp-p differential input range (1Vp-p • 2 inputs) for optimum signal-to-noise ratio. The differential operation gives the lowest even-order harmonic components. A lower input voltage of 1.5Vp-p or 1Vp-p can also be selected using the internal references, further optimizing SFDR. Alternatively, a single-ended input range can be used by tying the IN\ input to the common-mode voltage, if desired.

The ADS808 also provides an over-range flag that indicates when the input signal has exceeded the converter’s full-scale range. This flag can also be used to reduce the gain of the front-end signal conditioning circuitry. It also employs digital error-correction techniques to provide excellent differential linearity for demanding imaging applications. The ADS808 is available in a small TQFP-48 PowerPAD™ thermally enhanced package.

产品特性

  • DYNAMIC RANGE: SNR: 64dB at 10MHz fIN SFDR: 68dB at 10MHz fIN
  • PREMIUM TRACK-AND-HOLD: Low Jitter: 0.25ps rms Differential or Single-Ended Inputs Selectable Full-Scale Input Range
  • FLEXIBLE CLOCKING: Differential or Single-Ended Accepts Sine or Square Wave Clocking Down to 0.5Vp-p Variable Threshold Level
  • APPLICATIONS
    • BASESTATION WIDEBAND RADIOS: CDMA, GSM, TDMA, 3G, AMPS, and NMT
    • TEST INSTRUMENTATION
    • CCD IMAGING

PowerPAD is a registered trademark of Texas Instruments.

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