ECL4890-Low-Cost, Mono/Stereo, 1 W Differential Audio Power Amplifiers

ECL4890-Low-Cost, Mono/Stereo, 1 W Differential Audio Power Amplifiers
General Description

The ELN4890 is an audio power amplifier primarily designed for demanding applications in mobile phones and other portable communication device applications. It is capable of delivering 1 watt of continuous average power to an 8Ω BTL load with less than 1% distortion (THD+N) from a 5V DC power supply. Boomer audio power amplifiers were designed specifically to provide high quality output power with a minimal amount of external components. The ELN4890 does not require output coupling capacitors or bootstrap capacitors, and therefore is ideally suited for mobile phone and other low voltage applications where minimal power consumption is a primary requirement. The ELN4890 features a low-power consumption shutdown mode, which is achieved by driving the shutdown pin with logic low. Additionally, the ELN4890 features an internal thermal shutdown protection mechanism. The ELN4890 contains advanced pop & click circuitry which eliminates

noises which would otherwise occur during turn-on and turn-off transitions. The ELN4890 is unity-gain stable and can be configured by external gain-setting resistors.

Features

◆Available in space-saving packages

◆Ultra low current shutdown mode

◆BTL output can drive capacitive loads

◆Improved pop & click circuitry eliminates noises during turn-on and turn-off transitions

◆2.2 – 5.0V operation

◆No output coupling capacitors, snubber networks or bootstrap capacitors required

◆Thermal shutdown protection

◆Unity-gain stable

◆External gain configuration capability

Applications

◆Mobile Phones

◆PDAs

◆Portable electronic devices


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於民國76年成立,79年進入科學園區,為Fabless 的IC設計公司,從事IC之設計研發。 以CMOS IC及模組設計為主,並獲多項關鍵技術專利。

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