General Description
The ALC5616 is a high performance, low power, stereo channel I2S interface audio CODEC. The transmitted data can from analog input or digital microphone input. Also the received data can to headphone output, line output.
The ALC5616 features an ultra low power cap-free headphone amplifier. It consumes only less than 6.5mW power during playback, providing mobile system longer battery life under headphone listening mode.
The integrated DRC(Dynamic Range Controller) and 7-band parametric Equalizer provide further digital sound processing capability of audio playback paths. The DRC in ALC5616 continuously monitors the DAC output level. When the power level is low, it increases the input signal gain to make it sound louder. At the same time, if a peaking signal is detected, it autonomously reduces the applied gain to avoid hard clipping. It ensures the maximum/consistent signal amplitude without producing audio clipping and speaker damage. The 7-band parametric Equalizer contains 7 independent filters with programmable gain, center frequency and bandwidth to tailor the frequency characteristics of embedded speaker system according to user preferences.
For microphone recording, the DRC in ALC5616 can be used as AGC(Auto Gain Controller) to maintain a constant recording volume. Besides, a dynamic wind reduction filter is built in on recording path. The filter can detect the level of wind noise and on/off dynamically to keep the recording quality.
ALC5616 only requires two voltage supplies and consume ultra low power, making it ideal for mobile devices.

FEATUREs
Analog Features:
■ Digital-to-Analog Converter with 98dBA SNR
■ Analog-to-Digital Converter with 94dBA SNR
■ Differential analog microphone inputs with boost pre-amplifiers
   and low noise microphone bias
   ► +20/+24/+30/+35/+40/+44/+50/+52 dB microphone boost gain
   ► MIC input to ADC with 50dB boost gain, SNR > 66dBA and THD+N < -65dB
   ► Adjustable MICBIAS (0.9*MICVDD or 0.75*MICVDD)
■ Stereo line inputs
   ► Line input to ADC with 0dB gain, SNR >= 94dBA, THD+N <= -83dB
■ Stereo line outputs
   ► DAC to line output with 0dB gain, SNR >= 98dBA, THD+N <= -86dB
■ Stereo Cap-Free headphone amplifier with
   ultra low power consumption for playback
   ► 20mW/CH (AVDD=CPVDD=1.8V, THD+N <= -80dB, 16Ohm Load)
   ► Playback power consumption <= 6.5mW (AVDD=VBVDD=CPVDD=1.8V, 16Ohm, With I2S
      Clock, Playback Silence)
   ► Playback power consumption <= 14mW (AVDD=VBVDD=CPVDD=1.8V, 16Ohm, With I2S
      Clock, Playback 1mW/CH)
■ Audio jack detection
■ Inside PLL can receiver wide range clock input

Digital Features:
■ One 24bit/8kHz ~ 192kHz I2S/PCM interface for stereo DAC and stereo ADC
■ I2C control interface
■ 7-bands flexible equalizer (EQ) for DAC path or ADC path
■ Enhanced DRC(Dynamic Range Control)/AGC(Auto Gain Control)
   function for DAC path or ADC path
■ One wind noise reduction filter
■ Zero detection and soft volume for pop noise suppression

System Application
■ Smart Phones
■ Tablet