AK4541

Features:

AC'97 Rev. 2.1 Compliant
18bit Resolution A/D and D/A
Exceeds a PC98/99 Performance Categories:
         A/D...... 87dBA SNR
         D/A...... 87dBA SNR
         D/A+Mixer..... 85dBA SNR
         A-A...... 92dBA SNR
Analog Inputs:
        4 Stereo Inputs: LINE, CD, VIDEO, AUX
        Speakerphone and PC BEEP Inputs
        2 Independent MIC Inputs
Direct PC_Beep Pass Through for lower system costs
Analog Output:
         Stereo LINE Output with volume control
         True Line Level with volume control
         Mono Output with volume control
Multiple codec Capability
        The AK4541 can work as a Primary or Secondary.
EAPD(External Amplifier Powerdown) Support
Power Supplies:
         Analog 3.3V, Digital 3.3V
Lower Power Consumption:
        135mW at full operation
48 Pin LQFP Package


Pinout




Specifications

AVss1, AVss2, DVss1, DVss2 =0V (Note 1)

Parameter	Symbol	min	max	Units
Power Supply: Analog(AVdd1 & AVdd2) Digital(DVdd1 & DVdd2)	VA VD	-0.3 -0.3	6.0 6.0	V V
Input Current (any pins except for 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) must be the same voltage.



Description

The AK4541 is a 18bit high performance codec compliant with Audio Codec '97 Rev 2.1 requirements. The AC Link serial interface allows the product to be used with digital controllers as well as custom logic accelerators to meet PC98 and PC99 requirements for a PCI audio solution.The product provides two pairs of stereo outputs with independent volume controls along with a mono output, multiple stereo and mono inputs, are combined to create flexible mixing, gain and mute functions to provide a complete integrated audio solution for PCs.

The AK4541 can function as a Primary AC'97 or Secondary codec depending on the codec ID configuration(Multiple codec extension),making it suitable for the docking station application and multiple codec applications such as 4 speaker output or 6 speaker output.Sampling at 48kHz, the AK4541 provides excellent audio performance. It offers extreme low power consumption, and flexible power-down modes for use in Sub-NoteBook, laptops, desktop PCs,and aftermarket add-in boards.Like the earlier pin-compatible AK4540, AK4542 and AK4543, the AK4541 is available in a compact 48-lead LQFP package.The AK4541 is a pin compatible upgrade for the AK4540, AK4542 and AK4543, some software changes will be required to experience the extra functions ot the AK4541.