General Description
The ALC5640 is a high performance, low power, dual I2S interface audio CODEC. Dual I2S interface can connect to different devices and let the ALC5640 to be an Audio Hub. Each device can pass through the Audio Hub and then perform as input or output application. Asynchronous Sample Rate Converter (ASRC) provides independent and asynchronous connections to different processors, such as an application processor, baseband processor or wireless transceiver(BT).

FEATUREs
Analog Features:
■ Digital-to-Analog Converter with 100dBA 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 >= 100dBA, THD+N <= -86dB
■ Stereo/Mono BTL (Bridge-Tied-Load) Class-D amplifier
   ➤ 650mW/CH (SPKVDD=3.6V, THD+N < = 1%, 8Ohm Load)
   ➤ 500mW/CH (SPKVDD=3.6V, THD+N < = 0.1%, 8Ohm Load)
   ➤ 1.2W/CH (SPKVDD=5.0V, THD+N < = 1%, 8Ohm Load)
   ➤ 2.5W/CH (SPKVDD=5.0V, THD+N < = 10%, 4Ohm Load)
   ➤ 2.1W/CH (SPKVDD=5.0V, THD+N < = 1%, 4Ohm Load)
■ Stereo Cap-Free headphone amplifier with ultra low power consumption for playback
   ➤ 20mW/CH (AVDD=CPVDD=1.8V, THD+N <= -80dB, 16/32Ohm Load)
   ➤ Playback power consumption <= 5mW (AVDD=VBVDD=CPVDD=1.8V, 16Ohm, With I2S
      Clock, Playback Silence)
   ➤ Playback power consumption <= 13mW (AVDD=VBVDD=CPVDD=1.8V, 16Ohm, With I2S
      Clock, Playback 1mW/CH)
■ Mono differential receiver amplifier
   ➤ 50mW/CH (AVDD=CPVDD=1.8V, THD+N <= -70dB, 16Ohm Load, BTL mode)
■ Audio jack insert/combo jack detection
■ Inside PLL can receiver wide range clock input

Digital Features:
■ Two 24bit/8kHz ~ 192kHz I2S/PCM interface for each mono DAC and stereo DAC
■ Two 24bit/8kHz ~ 192kHz I2S/PCM interface for stereo ADC
■ I2C control interface
■ Two digital microphone interface support
■ Asynchronous sample rate converter (ASRC) for each interface
■ Programmable register table with two sequencers
■ 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
■ Dynamic wind noise reduction filter
■ Zero detection and soft volume for pop noise suppression
■ Speaker amplifier DC term self-test function for speaker protection
■ SounzRealTM audio sound processing
   ➤ OmniHeadphone EXPTM
   ➤ OminiSound EXPTM
   ➤ TruTreble EXPTM
   ➤ BassBack EXPTM
   ➤ TruBass EXPTM
   ➤ 2.1-Ch Generator from 2-Ch Track
   ➤ Dipole Speaker

System Application
■ Smart Phones
■ Tablet