APA2178

APA2178 100mW Stereo Cap-Free Headphone Driver Features No Output Capacitor Required Operating Voltage: 1.8V~4.5V Supply Current – I =5mA at V =3.3V DD DD Low Shutdown Current – IDD=1µA at VDD=3.3V Meeting VISTA Requirements Output Power at 1% THD+N – 70mW, at V =3.3V, DD R L = 16Ω at 10% THD+N – 100mW, at VDD=3.3V, RL = 16Ω Less External Components Required High PSRR: 78dB at 217Hz Short-Circuit and Thermal Protection ± 8KV ESD Performance Surface-Mount Packaging – WLCSP2x2-16 Lead Free and Green Devices Available (RoHS Compliant) Simplified Application Circuit General Description The APA2178 is a stereo, fixed gain, Cap-Free headphone driver which is available in a WLCSP2x2-16 package. The APA2178 is a ground-reference output, and doesn’t 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-...