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
Pinout
SpecificationsAVss1, AVss2, DVss1, DVss2 =0V (Note 1)
| Parameter |
Symbol |
min |
max |
Units |
Power Supplies (Note 2)
Analog(AVss1 & AVss2)
Digital(DVss1 & DVss2) |
VA
VD
|
-0.3
-0.3
|
6.0
6.0
|
V
V
|
| Input Current, Any Pin Except Supplies |
IIN |
- |
±10 |
mA |
| Analog Input Voltage |
VINA |
-0.3 |
VA+0.3 |
V |
| Digital Input Voltage |
VIND |
-0.3 |
VD+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.
AGND(AVss1, AVss2) and DGND(DVss1, DVss2) should be same voltage.
Note 2: Supplying Digital Power, Analog Power should be supplied.
Warning: Operation at or beyond these limits may results in permanent damage to the device.
Normal operation is not guaranteed at these extremes.DescriptionThe AK4544A is a 18bit high performance codec which support variable sampling rate conversion compliant with Audio Codec ' 97 Rev 2.1 requirements.It provides two pairs of stereo outputs with independent volume controls, a mono output, and multiple stereo and mono inputs,along with flexible mixing, gain and mute functions to provide a complete integrated audio solution for PCs. In addition, the product has the POP feature suitable for 3D positioning and direct output from DAC for AD monitoring or docking station application.
The AK4544A can function as a Primary AC' 97 or Secondary codec depending on the codec ID configuration(Multiple codec extension),making the AK4544A suitable for the docking station application and multiple codec applications.
Sampling frequency is programmable through AC-link as 48k, 44.1k,32k, 22.05k, 16k, 11.025k, and 8kHz. This setting is done independent to ADC and DAC side while L/R channels are kept identical.The product provides excellent audio performance, meeting or exceeding PC99 requirements for a PCI audio solution. It has low power consumption
and flexible power-down modes for use in laptops as well as desktop PCs and aftermarket add-in boards. Like the earlier pin-compatible AK4540, AK4541, AK4542, and AK4543, the AK4544A is available in a compact 48-lead LQFP package.Reference : Audio Codec ' 97 Revision 2.1
AK4544A Data Sheet
