ETK4992中文资料Audio PA数据手册ETEK规格书

描述 Description

The ETK4992 is a fully differential audio power amplifier designed for portable communication device applications. It is capable of delivering 1.25 watt of continuous average power to an 8Ω BTL load with less than 1% distortion (THD+N) from a 5V battery voltage. It operates from 2.2 to 5.5V.
Features like 90dB PSRR at 217Hz, improved RF-rectification immunity, the space-saving 8-bump WLCSP package, the advanced pop & click circuitry, a minimal count of external components and low-power shutdown mode make ETK4992 ideal for wireless handsets.
The ETK4992 is unity-gain stable, and the gain can be configured by external resistors.\r

特性 Features

• Fully differential amplifier
• Power output at 5.0V & 1% THD&8Ω 1.25W (typ)
• Power output at 4.2V & 1% THD&8Ω 0.92W (typ)
• Power output at 3.6V & 1% THD&8Ω 0.7W (typ)
• Ultra low shutdown current 0.01μA (typ)
• Thermal overload protection circuitry
• Unity-gain stable
• Available in space-saving package: 8-bump WLCSP

应用 Application

• Wireless handsets
• PDAs, Handheld computers