參數(shù)資料
型號: AK4420
廠商: Asahi Kasei Microsystems Co.,Ltd
英文描述: 192kHz 24-Bit Stereo ツヒ DAC with 2Vrms Output
中文描述: 192kHz的24位立體聲ツヒDAC,具有2Vrms的輸出
文件頁數(shù): 11/19頁
文件大?。?/td> 373K
代理商: AK4420
[AK4420]
Analog output block
The internal negative power supply generation circuit (
Figure 5
) provides a negative power supply for the internal 2Vrms
amplifier. It allows the AK4420 to output an audio signal centered at VSS (0V, typ) as shown in
Figure 6
. The negative
power generation circuit (
Figure 5
) needs 1.0uF capacitors (Ca, Cb) with low ESR (Equivalent Series Resistance). If this
capacitor is polarized, the positive polarity pin should be connected to the CP and VSS2 pins. This circuit operates by
clocks generated from MCLK. When MCLK stops, the AK4420 is placed in the reset mode automatically and the analog
outputs settle to VSS (0V, typ).
AK4420
Figure 5. Negative power generation circuit
AK4420
CVDD
Charge
Pump
CP
CN
VSS2
VEE
1uF
1uF
Negative Power
(+)
Cb
Ca
(+)
AOUTR
(AOUTL)
0V
2.12Vrms
Figure 6. Audio signal output
MS0683-E-02
2007/12
- 11 -
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