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APA2176

ANPEC
Part Number APA2176
Manufacturer ANPEC
Description 270mW Stereo Cap-Free Headphone Driver
Published Nov 13, 2015
Detailed Description APA2176/2176A 270mW Stereo Cap-Free Headphone Driver Features • No Output Capacitor Required • Dual Supply Voltage (P...
Datasheet PDF File APA2176 PDF File

APA2176
APA2176

Overview
APA2176/2176A 270mW Stereo Cap-Free Headphone Driver Features • No Output Capacitor Required • Dual Supply Voltage (PV >V ) DD DD – VDD=1.
8 ~5.
5V – PVDD=2.
2 ~ 5.
5V • Meeting VISTA Requirements • Output Power at 1% THD+N -200mW, at V =3.
3V, DD PV =5.
0V, DD RL=16Ω -55mW, at V =1.
8V, DD PV =3.
0V, DD RL=16Ω at 10% THD+N -270mW, at VDD=3.
3V, PVDD=5.
0V, RL=16Ω -70mW, at VDD=1.
8V, PVDD=3.
0V, RL=16Ω • Less External Components Required • High PSRR: 80dB at 217Hz • Fast Start-Up Time : 120µs • Short-Circuit and Thermal Protection • Surface-Mount Package – TQFN4x4-20B (with Enhanced Thermal Pad) – TSSOP-16 – TQFN3x3-16 (with Enhanced Thermal Pad) (for APA2176A) • Lead Free and Green Devices Available (RoHS Compliant) Applications • Headsets • PDAs • Portable Multimedia Devices • Notebooks General Description The APA2176/2176A is a stereo, fixed gain, and cap-free headphone driver which is available in TQFN4x4 20-pin, TQFN3x3 16-pin (APA2176A) or TSSOP-16 package.
Dual supply voltage provides higher efficiency and better power ripple rejection.
The APA2176/2176A is designed with 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.
The built-in gain setting can minimize the external component counts and save the PCB space.
High PSRR provides increased immunity to noise and RF rectification.
In addition to these features, a fast start-up time and small package size make the APA2176/2176A an ideal choice for portable multimedia devices.
Moreover, the APA2176/2176A is also equipped other features.
For example, at THD+N=1%, it is capable of driving 200mW at VDD=3.
3V, PVDD=5.
0V into 16Ω.
In addition, it provides thermal and short circuit protections.
Simplified Application Circuit R-CH RIN Input L-CH Input LIN APA2176/2176A RSD Shutdown Control LSD Stereo Headphone ROUT LOUT ANPEC reserves the right to make changes to improve ...


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