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.

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