SN4990A中文资料1.2W,AB类音频功率放大器数据手册SI-EN规格书

描述 Description

The SN4990A has been designed for demanding audio applications such as mobile phones and permits the reduction of the number of external components.It is capable of delivering 1.2W of continuous RMS output power into an 8Ω load @5V.

An externally-controlled shutdown mode reduces the supply current to less than 1μA. It also includes internal thermal shutdown protection.The unity-gain stable amplifier can be configured by external gain setting resistors.

特性 Features

• Operating from VCC = 2.7V to 5.5V
• 1.2W output power @ VCC = 5V, THD+N= 1%,f = 1kHz, with 8Ω load
• Ultra-low consumption in shutdown mode (1μA)
• Near-zero pop & click
• Ultra-low distortion
• Unity gain stable
• UTQFN-9L (1.5mm × 1.5mm) package

应用 Application

• Mobile phones
• PDAs
• Portable electronic devices
• Notebook computer