AK4204ET 参数 Datasheet PDF下载

[AK4204]

OPERATION OVERVIEW

■

Charge Pump Circuit

Internal negative power supply circuit (Figure

3)

supplies the negative voltage to the video amp, and the video amp 0V

output is used for a pedestal level (Figure

4

and

Therefore, the output coupling capacitor can be removed.

AK4204

VDD1

Charge

Pump

Negative Power

CP

(+)

CN

1uF

VSS1

VEE

C2

(+)

10uF

C1

Figure 3. Charge Pump Circuit

Note 9. C1 and C2 should be low ESR (Equivalent Series Resistance) capacitors. When these capacitors are polarized,

the positive polarity pins should be connected to the CP or VSS1 pin.

AK4204

2 Vrms

0V

ROUT

(LOUT)

Figure 4. Audio Signal Output

AK4204

75Ω

VOUT

75Ω

0V

Figure 5. Video Signal Output

Rev. 0.1

-7-

2012/02