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Description

The TS4851 is a low power audio amplifier that can drive either both a mono speaker or a stereo headset. To the speaker, it can deliver 400 mW (typ.) of continuous RMS output power into an 8? load with a 1 THD+N value. To the headset driver, the amplifier can deliver 30 mW (typ.) per channel of continuous average power into a stereo 32 ? bridged-tied load with 0.5 THD+N @ 3.3V.

■ Operating from VCC = 3V to 5.5V

■ Rail to rail input/output

■ Speaker driver with 1 W output @ Vcc = 5V,

THD+N = 1, F = 1kHz, 8? load

■ Headset drivers with 160 mW output @

Vcc = 5V, THD+N = 1, F = 1kHz, 32? load

■ Headset output is 30mW in stereo @

Vcc = 3V

■ THD+N < 0.5 Max @ 20mW into 32? BTL,

50Hz < Frequency < 20kHz

■ 32-step digital volume control from -

34.5dB to +12dB

■ +6dB power up volume and full standby

■ 8 different output modes

■ Pop & click reduction circuitry

■ Low shutdown current (< 100nA)

■ Thermal shutdown protection

■ Flip-chip package 18 x 300μm bumps

Applications

■ Mobile Phones