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LM98722 - 产品图解:
LM98722-具有 LVDS/CMOS 输出和集成 CCD/CIS 传感器定时发送器的 3 通道 16 位 45 MSPS AFE
LM98722-CCD/CMOS信号调节-模拟前端(AFE)-数据转换器
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TI产品 - LM98722介绍
LM98722 - 具有 LVDS/CMOS 输出和集成 CCD/CIS 传感器定时发送器的 3 通道 16 位 45 MSPS AFE

LM98722是TI公司的一款CCD/CMOS信号调节产品,LM98722是具有 LVDS/CMOS 输出和集成 CCD/CIS 传感器定时发送器的 3 通道 16 位 45 MSPS AFE,本页介绍了LM98722的产品说明、应用、特性等,并给出了与LM98722相关的TI元器件型号供参考。

LM98722 - 具有 LVDS/CMOS 输出和集成 CCD/CIS 传感器定时发送器的 3 通道 16 位 45 MSPS AFE - CCD/CMOS信号调节 - 模拟前端(AFE) - TI公司(Texas Instruments,德州仪器)

产品特性
  • LVDS/CMOS Outputs
  • LVDS/CMOS/Crystal Clock Source with PLL Multiplication
  • Integrated Flexible Spread Spectrum Clock Generation
  • CDS or S/H Processing for CCD or CIS sensors
  • Independent Gain/Offset Correction for Each Channel
  • Automatic per-Channel Gain and Offset Calibration
  • Programmable Input Clamp Voltage
  • Flexible CCD/CIS Sensor Timing Generator
产品应用
  • Multi-Function Peripherals
  • High-speed Currency/Check Scanners
  • Flatbed or Handheld Color Scanners
  • High-speed Document Scanners
  • Key Specifications:
    • Maximum Input Level:
      • 1.2-V or 2.4-V Modes (Both with + or - Polarity Option)
    • ADC Resolution: 16-Bit
    • ADC Sampling Rate: 45 MSPS
    • INL: +18/-25 LSB (typ)
    • Channel Sampling Rate: 22.5/22.5/15 MSPS (1ch/2ch/3ch)
    • PGA Gain Steps: 256 Steps
    • PGA Gain Range: 0.64 to 8.3x
    • Analog DAC Resolution: +/-9 Bits
    • Analog DAC Range: +/-307 mV or +/-614 mV
    • Digital DAC Resolution: +/-6 Bits
    • Digital DAC Range: -2048 LSB to + 2016 LSB
    • SNR: -74dB (at 0dB PGA Gain)
    • Power Dissipation: 630 mW (LVDS)
    • Operating Temp: 0 to 70°C
    • Supply Voltage: 3.3-V Nominal (3.0-V to 3.6-V Range)
产品说明

The LM98722 is a fully integrated, high performance 16-Bit, 45 MSPS signal processing solution for digital color copiers, scanners, and other image processing applications. High-speed signal throughput is achieved with an innovative architecture utilizing Correlated Double Sampling (CDS), typically employed with CCD arrays, or Sample and Hold (S/H) inputs (for higher speed CCD or CMOS image sensors). The signal paths utilize 8 bit Programmable Gain Amplifiers (PGA), a +/-9-Bit offset correction DAC and independently controlled Digital Black Level correction loops for each input. The PGA and offset DAC are programmed independently allowing unique values of gain and offset for each of the three analog inputs. The signals are then routed to a 45-MHz high performance analog-to-digital converter (ADC). The fully differential processing channel shows exceptional noise immunity, having a very low noise floor of -74dB. The 16-bit ADC has excellent dynamic performance making the LM98722 transparent in the image reproduction chain.

A very flexible integrated Spread Spectrum Clock Generation (SSCG) modulator is included to assist with EM compliance and reduce system costs.

Device Information
ORDER NUMBERPACKAGEBODY SIZE
LM98722TSSOP (56)14.0 mm x 6.10 mm
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