AK4641

Features:

1. Recording Function of 16bit Stereo CODEC
    • Mono Input
    • 2 to 1 Selector (Internal and External MIC)
    • 1st MIC Amplifier: +20dB or 0dB
    • 2nd Amplifier with ALC: +27.5dB ∼ −8dB, 0.5dB Step
    • ADC Performance: S/(N+D): 81dB, S/N: 86dB
    • Sampling Rate: 7kHz ∼ 48kHz
    Audio Interface Format: I²S, 16bit MSB justified
2. Playback Function of 16bit Stereo CODEC
    • Digital De-emphasis Filter (tc=50/15s, fs=32kHz, 44.1kHz, 48kHz)
    • Digital Volume (0dB ∼ −127dB, 0.5dB Step, Mute)
    • 5 Band Equalizer
    • Stereo Line Output
       - Performance: S/(N+D): 86dB, S/N: 90dB
    • Mono Line Output
      - Differential Output
      - Performance: S/(N+D): 86dB, S/N: 93dB
   • AUX Input
      - Differential Input
      - +24dB ∼ −21dB, 3dB step
   • Sampling Rate: 7kHz ∼ 48kHz
   • Audio Interface Format: I²S, 16bit MSB justified, 16bit LSB justified
3. 16bit Mono CODEC
   • Analog Mix Path for Bluetooth Interface
   • Sample Rate: 8kHz ∼ 16kHz
   • Audio Interface Format: Short/Long Frame, I2S, 16bit MSB justified
4. Power Management
5. Master Clock: 1.792MHz ∼ 12.288MHz
6. Control mode: I²C Bus
7. Ta = −10 ∼ 70°C
8. Power Supply: 2.6V∼ 3.6V (typ. 3.3V)
9. Power Supply Current: 17mA
10. Package: 36pin QFN (0.5mm pitch)


Pinout




Specifications

(AVSS, DVSS, BVSS =0V; Note 1)

Parameter		Symbol	min	max	Units
Power Supplies:	Analog Digital 16bit Mono CODEC | AVSS DVSS | (Note 2) | AVSS BVSS | (Note 2)	AVDD DVDD BVDD GND1 GND2	-0.3 -0.3 -0.3 - -	4.6 4.6 4.6 0.3 0.3	V V V V V
Input Current, Any Pin Except Supplies		IIN	-	±10	mA
Analog Input Voltage		VINA	-0.3	AVDD+0.3	V
Digital Input Voltage		VIND	-0.3	DVDD+0.3	V
Ambient Temperature (Powered applied)		Ta	-10	70	°C
Storage Temperature		Tstg	-65	150	°C

Note 1. All voltages with respect to ground.
Note 2. AVSS, DVSS and BVSS must be connected to the same analog ground plane.


Description

The AK4641 is targeted at PDA and other low-power, small size applications. It features a 16bit Stereo CODEC with a built-in Microphone-Amplifier and 16bit Mono CODEC for Bluetooth Interface. Input circuits include Microphone-Amplifier and ALC (Auto Level Control) circuit. The AK4641 is available in a 36pin QFN, utilizing less board space than competitive offerings.