TS4994中文资料1 W差分输入/输出音频功率放大器，支持可选待机数据手册ST规格书

描述 Description

The TS4994 is an audio power amplifier capable of delivering 1W of continuous RMS output power into an 8Ω load @ 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 (except in the MiniSO-8 version). An internal thermal shutdown protection is also provided, making the device capable of sustaining short-circuits.

The device is equipped with common mode feedback circuitry allowing outputs to be always biased at VCC/2 regardless of the input common mode voltage.

The TS4994 is designed for high quality audio applications such as mobile phones and requires few external components.

特性 Features

• Available in DFN10 3x3 (0.5mm pitch) & MiniSO-8
• Ultra fast startup time: 15ms typ.
• All lead-free packages
• Ultra-low consumption in standby mode (10nA)
• 90dB CMRR @ 217Hz
• Differential inputs
• 100dB PSRR @ 217Hz with grounded inputs
• Near-zero pop & click
• 1W rail-to-rail output power @ VCC =5V, THD = 1%, F = 1kHz, with 8Ωload
• Selectable standby mode (active low or active high)
• Operating range from VCC = 2.5V to 5.5V