Freescale SGTL5000低功耗立体声CODEC解决方案

Freescale公司的SGTL5000是集成了耳机放大器的低功耗立体声CODEC,提供线路输入,麦克风输入,线路输出,耳机输出和数字I/O,是手持产品的完整的音频解决方案.模拟输入ADC的SNR为- 85dB,具有环绕,低音,音质控制/参数均衡/图像均衡以及时钟控制等,主要用在手持导航设备(PND),电子书,智能手机,平板电脑和GPS等.本文介绍了SGTL5000主要特性,方框图, 20QFN和32QFN封装的典型应用电路, 平板电脑方框图以及SGTL5000评估平台主要特性和电路图.

The SGTL5000 is a Low Power Stereo Codec with Headphone Amp from Freescale, and is designed to provide a complete audio solution for portable products needing line-in, mic-in, line-out, headphone-out, and digital I/O. Deriving it’s architecture from best in class, Freescale integrated products that are currently on the market. The SGTL5000 is able to achieve ultra low power with very high performance and functionality, all in one of the smallest footprints available. Target markets include portable media players, GPS units, and smart phones.

Features such as capless headphone design and an internal PLL, help lower overall system cost.

SGTL5000主要特性:

Analog Inputs

• Stereo Line In - Support for external analog input

• Stereo Line In - Codec bypass for low power

• MIC bias provided (5.0 x 5.0 mm QFN, 3.0 x 3.0 mm QFN TA2)

• Programmable MIC gain
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