TS4909 Dual mode low power 150 mW stereo headphone amplifier with capacitor-less and single-ended outputs Datasheet − production data Features ■ No output coupling capacitors necessary ■ Pop-and-click noise reduction circuitry ■ Operating from VCC = 2.
2 V to 5.
5 V ■ Standby mode active low ■ Output power: – 158 mW at 5 V, into 16 Ω with 1% THD+N max (1 kHz) – 52 mW at 3.
0 V into 16 Ω with 1% THD+N max (1 kHz) ■ Ultra-low current consumption: 2.
0 mA typ.
at 3V ■ Ultra-low standby consumption: 10 nA typ.
■ High signal-to-noise ratio: 105 dB typ.
at 5 V ■ High crosstalk immunity: 110 dB (F = 1 kHz) for single-ended outputs ■ PSRR: 72 dB (F = 1 kHz), inputs grounded, for phantom ground outputs...

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