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