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APA2056A

Anpec Electronics Coropration
Part Number APA2056A
Manufacturer Anpec Electronics Coropration
Description 2.4W Stereo Audio Power Amplifier & Capfree Headphone Driver
Published Jan 6, 2010
Detailed Description APA2056A 2.4W Stereo Audio Power Amplifier & Capfree Headphone Driver Features General Description The APA2056A is a mon...
Datasheet PDF File APA2056A PDF File

APA2056A
APA2056A

Overview
APA2056A 2.
4W Stereo Audio Power Amplifier & Capfree Headphone Driver Features General Description The APA2056A is a monolithic integrated circuit, which combines a stereo power amplifier and a stereo output capacitor-less headphone amplifier.
The headphone amplifier is ground-reference output, and no need the output capacitors for DC blocking.
The advantages of eliminating the output capacitor are saving the cost, PCB’ s space and component height.
Both the de-pop circuitry and the thermal shutdown protection circuitry are integrated in the APA2056A, which reduces pops and clicks noise during power on/ off and in shutdown mode.
Thermal shutdown protects the chip from being destroyed by over-temperature failure.
To simplify the audio system design in notebook computer applications, the APA2056A provides the internal fixed gain (10.
5dB), and these features can minimize components and PCB area.
The APA2056A is available in a TSSOP-28P and TQFN5x5-28 package.
Both packages are characterized by space saving and thermal efficiency.
• • • • 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 VDD = 5V, RL = 8Ω, PO=0.
9W 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 VDD = 5V, AMP mode, RL = 8Ω at 10% THD+N –2.
4W at VDD = 5V, AMP mode, RL = 4Ω –1.
5W at VDD = 5V, AMP mode, RL = 8Ω Thermal Shutdown Protection and Over Current Protection Circuitry High Supply Voltage Ripple Rejection Surface-Mount Packaging – TSSOP-28P (with enhanced thermal pad) – TQFN5x5-28 (with enhanced thermal pad) Lead Free Available (RoHS Compliant) • • • • Applications www.
DataSheet4U.
com Depop Circuitry Integrated • • Note book PCs LCD monitor • • • ANPEC reserves t...


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