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PCM1865 - 产品图解：
PCM1865-具有智能前端的 SW 控制、4 通道音频 ADC
PCM1865-音频ADC-音频转换器-音频
PCM1865-PCM186x 110dB 2ch and 4ch Audio ADCs with Universal Front End
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TI产品 - PCM1865介绍

PCM1865 - 具有智能前端的 SW 控制、4 通道音频 ADC

PCM1865是TI德州仪器公司的一款音频ADC产品，PCM1865是具有智能前端的 SW 控制、4 通道音频 ADC，本站介绍了PCM1865的封装应用图解、特点和优点、功能等，并给出了与PCM1865相关的TI元器件型号供参考。

PCM1865 - 具有智能前端的 SW 控制、4 通道音频 ADC - 音频ADC - 音频转换器 - 德州仪器

产品特性
  • Universal Analog Mic Input, 2.1VRMS Full Scale
    • 8 Analog Inputs with MUX and PGA
    • Analog pre-mix function before PGA/MUX
    • Single Ended, Pseudo-Differential or Differential Inputs with Mic Bias
    • 4x Digital Microphone Inputs
  • Up to 4 Mono ADC channels (PCM1865)
  • Hardware Control (PCM1861)
  • I2C or SPI Control (PCM1863/5)
  • H/W Programmable Gain Amplifier
    • Fixed Mic Pregain select : 20, 32dB (Analog)
  • S/W Programmable Gain Amplifier
    • Integrated High Performance Audio PLL
    • Single 3.3V Supply for Analog and Digital
      • Additional 1.8V Core and Interface for lower power consumption
    • Power Dissipation at 3.3V: <85mW (PCM1861/3),<145mW (PCM1865)
    • 'Energysense' Audio Content Detector - for auto system wakeup and sleep
    • Master or Slave Audio Interface:
    • Mixer functionality:
      • Digital Mixer to mix ADC outputs and I2S synchronous inputs
      • Zero Crossing PGA Gain changes
    • Automatic PGA Clipping Suppression control
    • PCB-footprint compatibility across all 3 devices
    产品应用
    • Home Theater and TV
    • Automotive Head Units
    • Bluetooth® Speaker
    • Microphone Array Processors
    产品说明

    The PCM186x family of audio front-end devices takes a new approach to audio-function integration to ease compliance with European Ecodesign legislation while enabling high-performance end products. With no need for a 5-volt supply or an external programmable-gain amplifier, smaller, smarter products are feasible at reduced cost.

    The PCM186x's highly flexible audio front end supports input levels from small-mV microphone inputs to 2.1VRMS line Inputs without external resistor dividers. The PCM186x family integrates many system-level functions that assist or replace some DSP functions.

    All these features are available using a single 3.3V power supply. An integrated bandgap voltage reference provides excellent PSRR, so that a dedicated analog 3.3V rail may not be required.

    产品器件信息
    ORDER NUMBER PACKAGEBODY SIZE
    PCM1861TSSOP (30)7.80mm × 4.40mm
    PCM1863
    PCM1865
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