APA2057A - Anpec Electronics Coropration

APA2057A 2.4W Stereo Audio Power Amplifier

The APA2057A is a monolithic integrated circuit, which combines a stereo power amplifier and a stereo output capacitor-less headphone amplifier. The stereo power amplifier provides 19-steps gain setting for flexible application. The headphone amplifier is ground-reference output, and doesn’t need the output capacitors for DC blocking. The advantages of elimi.

Features

• Operating Voltage
  – HVDD= 3.0~3.6V
  – VDD= 4.5~5.5V
• No Output Capacitor at Headphone Amplifier Required
• Meeting VISTA Requirement
• Low Distortion AMP Mode
  – THD+N=56dB, at VDD = 5V, RL = 4Ω, PO=1.5W
  – THD+N=64dB, at V = 5V, DD R= L 8Ω, P =0.9W O HP Mode
  – THD+N=73dB, at HVDD=3.3V, RL=16Ω PO=125mW
  – THD+N=77dB, at HVDD=3.3V, RL=32Ω, PO=88mW
  – THD+N=85dB, at HVDD=3.3V, RL=10kΩ, VO=1.7Vrms
• Output Power at 1% THD+N
  – 1.9W, at VDD = 5V, AMP Mode, RL = 4Ω
  – 1.2W, at V DD = 5V, AMP Mode, R = L 8Ω
• at 10% THD+N
  –2.4W at VDD = 5V, AMP Mode, RL = 4Ω
  –1.5W at V DD = 5V, .