Flexible audio codec integrates voice support and I²S interface

Designers adding audio features to mobile applications can use the Realtek ALC5620 hi-fi codec, with built-in independent voice DAC, to save board space, reduce component count, and minimise power consumption.

The ALC5620 provides an interface that can be configured for I²S or PCM to support stereo and voice functions, and also has a dual-channel ADC for recording via I²S. To reduce component count the device can connect directly to mono or stereo differential analogue inputs, stereo headphones, a 25mW single-ended output, or a 75mW BTL mono output. In addition, by including an integrated speaker driver for applications up to 1W, the ALC5620 also enables direct connection to a mono or stereo BTL speaker.

Further features include differential inputs and outputs for high noise immunity and optimal sound quality, simple register configuration to optimise for an external Class-A/B or Class-D amplifier, and a fiveband equaliser implemented in hardware and featuring configurable gain, bandwidth and centre frequency.

 

FEATURES Supply voltage range: 1.8V to 5.0V 7mm x 7mm QFN package Software-controlled power-down modes Sub-10µA stand-by mode Microphone-switch detection

APPLICATIONS Hi-fi systems Surround-sound systems Professional mobile computers GPS systems Handheld multimedia devices Personal communicators

 

 

Realtek/ALC5620