TS4909(2013) Datasheet - STMicroelectronics

Description
The TS4909 is a stereo audio amplifier designed to drive headphones in portable applications. The integrated phantom ground is a circuit topology that eliminates the heavy output coupling capacitors.

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 3 V
■ 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
■ Low tWU: 50 ms in PG mode, 100 ms in SE mode
■ Available in lead-free DFN10 3 x 3 mm

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