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.

特性 Features

? No Output Capacitor Required

? Dual Supply Voltage (PVDD>VDD)

– VDD=1.8 ~5.5V

– PVDD=2.2 ~ 5.5V

? Meeting VISTA Requirements

? Output Power at 1 THD+N

-200mW, at VDD=3.3V, PVDD=5.0V, RL=16W

-55mW, at VDD=1.8V, PVDD=3.0V, RL=16W at 10 THD+N

-270mW, at VDD=3.3V, PVDD=5.0V, RL=16W

-70mW, at VDD=1.8V, PVDD=3.0V, RL=16W

? Less External Components Required

? High PSRR: 80dB at 217Hz

? Fast Start-Up Time : 120ms

? 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