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Description

The TS4994 is an audio power amplifier capable of delivering 1W of continuous RMS output power into an 8Ωload @ 5V. Due to its differential inputs, it exhibits outstanding noise immunity.

An external standby mode control reduces the supply current to less than 10nA. An STBY MODE pin allows the standby to be active HIGH or LOW. An internal thermal shutdown protection is also provided, making the device capable of sustaining short-circuits.

Features

■ Differential inputs

■ Near-zero pop & click

■ 100dB PSRR @ 217Hz with grounded inputs

■ Operating range from VCC = 2.5V to 5.5V

■ 1.2W rail-to-rail output power @ VCC = 5V, THD = 1, F = 1kHz, with 8Ωload

■ 90dB CMRR @ 217Hz

■ Ultra-low consumption in standby mode (10nA)

■ Selectable standby mode (active low or active high)

■ Ultra fast startup time: 15ms typ.

■ Available in 9-bump flip-chip (300mm bump diameter)

■ Lead-free package

Applications

■ Mobile phones (cellular / cordless)

■ Laptop / notebook computers

■ PDAs

■ Portable audio devices