ETK4993数据手册ETEK中文资料规格书

描述 Description

The ETK4993 is a fully differential audio power amplifier designed for portable communication device applications. It is capable of delivering 1.7 watt of continuous average power to an 8Ω BTL load , 2.5 watt of continuous average power to an 4Ω BTL load with less than 1% distortion (THD+N) from a 5V battery voltage. It operates from 2.2 to 5.5V.\r
Features like 90dB PSRR at 217Hz, improved RF-rectification immunity, the space-saving DFN8, MSOP8 package, the advanced pop & click circuitry, a minimal count of external components and low-power shutdown mode make ETK4993 ideal for wireless handsets.\r
The ETK4993 is unity-gain stable, and the gain can be configured by external resistors.

特性 Features

• Fully differential amplifier\r
• Improved PSRR at 217Hz (VDD>3.0V) 90dB (typ)\r
• Ultra low shutdown current 0.01μA (typ)\r
• Improved pop & click circuitry eliminates noises during turn-on and turn-off transitions\r
• Thermal overload protection circuitry\r
• No output coupling capacitors, bootstrap capacitors required\r
• Unity-gain stable\r
• External gain configuration capability\r
• Available in space-saving package: DFN8(ETK4993Y),MSOP8(ETK4993M)

应用 Application

• Wireless handsets\r
• Portable electronic devices\r
• PDAs, Handheld computers