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具有耳机放大器和低电源电流的 2W 单声道、模拟输入 AB 类音频放大器
Audio input type Analog Input
Architecture Class-AB
Speaker channels (Max) Mono
Power stage supply (Max) (V) 5.5
Power stage supply (Min) (V) 2.5
Load (Min) (ohms) 4
Output power (W) 2
SNR (dB) 93
THD + N @ 1 kHz (%) 0.2
Iq (Typ) (mA) 4
Control interface Hardware
Closed/open loop Open
Analog supply (Min) (V) 2.5
Analog supply (Max) (V) 5.5
PSRR (dB) 58
Operating temperature range (C) -40 to 125
  • Ideal for Notebook Computers, PDAs, and Other Small Portable Audio Devices
  • 2 W Into 4 From 5-V Supply
  • 0.6 W Into 4 From 3-V Supply
  • Stereo Head Phone Drive
  • Mono (BTL) Signal Created by Summing Left and Right Signals
  • Wide Power Supply Compatibility 3 V to 5 V
  • Meets PC99 Portable Specs (target)
  • Low Supply Current
    • 4 mA Typical at 5 V
    • 3.3 mA Typical at 3 V
  • Shutdown Control ...1 uA Typical
  • Shutdown Pin is TTL Compatible
  • –40°C to 85°C Operating Temperature Range
  • Space-Saving, Thermally-Enhanced MSOP Packaging

The TPA0233 is a 2-W mono bridge-tied-load (BTL) amplifier designed to drive speakers with as low as 4- speaker.

The gain of the input stage is set by the user-selected input resistor and a 50-k/ RI in BTL mode. The input terminals are high-impedance CMOS inputs, and can be used as summing nodes.

The TPA0233 is available in the 10-pin thermally-enhanced MSOP package (DGQ) and operates over an ambient temperature range of ?40°C to 85°C.