
Asahi Kasei Microdevices
General Description
The AK4544A is a 18bit high performance codec which support variable sampling rate conversion compliant with Audio Codec ’ 97 Rev 2.1 requirements.
FEATUREs
• AC’ 97 Rev. 2.1 Compliant
• 18bit Resolution A/D and D/A
• Exceeds PC99 Performance Requirements:
AK4544A (@fs=48k)
A/D………………90dBA
D/A………………89dBA
A-A………………95dBA
• Analog Inputs:
4 Stereo Inputs: LINE, CD, VIDEO, AUX
Speakerphone and PC BEEP Inputs
2 Independent MIC Inputs
• Variable Sampling Rate Support
48k, 44.1k, 32k, 22.05k, 16k, 11.025k, 8k
• Analog Output:
Stereo LINE Output with volume control
True Line Level with volume control
Mono Output with volume control
• 3D Stereo Enhancement
• POP Function & DAC Feed Back Control
• Multiple codec Capability
The AK4544A can work as a Primary or Secondary
codec depended on codec ID configuration.
• EAPD(External Amplifier Powerdown) Support
• Power Supplies: Analog 5.0V, Digital 5.0V or 3.3V
• Low Power Consumption
230mW(Analog:5V/Digital:3.3V) at full operation
• 48 Pin LQFP Package