APA2057A Description
The APA2057A is a monolithic integrated circuit, which bines 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.
APA2057A Key Features
- Operating Voltage
- HVDD= 3.0~3.6V
- VDD= 4.5~5.5V
- No Output Capacitor at Headphone Amplifier
- Meeting VISTA Requirement
- Low Distortion
- THD+N=56dB, at VDD = 5V, RL = 4Ω, PO=1.5W
- THD+N=64dB
- THD+N=73dB, at HVDD=3.3V, RL=16Ω PO=125mW
- THD+N=77dB, at HVDD=3.3V, RL=32Ω, PO=88mW