Description
The TS4909 is a stereo audio amplifier designed to drive headphones in portable applications.

Features
■ No output coupling capacitors necessary
■ Pop-and-click noise reduction circuitry
■ Operating from VCC = 2.2V to 5.5V
■ Standby mode active low
■ Output power:
    – 158mW @5V, into 16Ω with 1% THD+N max (1kHz)
    – 52mW @3.0V into 16Ω with 1% THD+N max (1kHz)
■ Ultra low current consumption: 2.0mA typ.@3V
■ Ultra low standby consumption: 10nA typ.
■ High signal-to-noise ratio: 105 dB typ.@5V
■ High crosstalk immunity: 110dB (F=1kHz) for single-ended outputs
■ PSRR: 72dB (F=1kHz), inputs grounded, for phantom ground outputs
■ Low tWU: 50ms in PHG mode, 100ms in SE mode
■ Available in lead-free DFN10 3x3mm

Applications
■ Headphone amplifier
■ Mobile phone
■ PDA, portable audio player