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TPA2037D1 固定增益3.2W单声道D类,具有集成 D
发布时间:2009-12-19
浏览次数:494 次

TPA2037D1 固定增益3.2W单声道D类,具有集成 DAC噪声滤波器

The TPA2037D1 is a 3.2 W high efficiency filter-free class-D audio power amplifier (class-D amp) with 6 dB of fixed gain in a 1.21 mm x 1.16 mm wafer chip scale package (WCSP). The device requires only one external component.

Features like 95% efficiency, 1.5 mA quiescent current, 0.1 µA shutdown current, 81-dB PSRR, 20 µV output noise, and improved RF immunity make the TPA2037D1 class-D amplifier ideal for cellular handsets. A start-up time of 4 ms with no audible pop makes the TPA2037D1 ideal for PDA and smart-phone applications.

特性

  • Powerful Mono Class-D Speaker Amplifier
    • 3.24 W (4 , 5 V, 10% THDN)
    • 2.57 W (4 , 5 V, 1% THDN)
    • 1.80 W (8 , 5 V, 10% THDN)
    • 1.46 W (8 , 5 V, 1% THDN)
  • +6 dB Fixed Gain
  • Integrated Image Reject Filter for DAC Noise Reduction
  • Low Output Noise of 20 µV
  • Low Quiescent Current of 1.5 mA
  • Differential Input Impedance of 300 k
  • Auto-Recovering Short-Circuit Protection
  • Thermal-Overload Protection
  • Filter-Free Mono Class-D Amp
  • 9-Ball 1,21 mm × 1,16 mm 0,4mm Pitch WCSP
  • APPLICATIONS
    • Wireless or Cellular Handsets and PDAs
    • Portable Navigation Devices
    • General Portable Audio Devices

APPLICATION CIRCUIT

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