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AK4424 Datasheet(PDF) 11 Page - Asahi Kasei Microsystems |
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AK4424 Datasheet(HTML) 11 Page - Asahi Kasei Microsystems |
11 / 19 page [AK4424] MS0935-E-03 2010/09 - 11 - ■ Analog Output Block The internal negative power supply generation circuit (Figure 4) provides a negative power supply for the internal 2Vrms amplifier. It allows the AK4424 to output an audio signal centered at VSS (0V, typ) as shown in Figure 5. The negative power generation circuit (Figure 4) 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 AK4424 is placed in the reset mode automatically and the analog outputs settle to VSS (0V, typ). CVDD Charge Pump CP CN VSS2 VEE 1uF 1uF Negative Power AK4424 (+) Cb Ca (+) Figure 4. Negative power generation circuit AOUTR AK4424 (AOUTL) 0V 2.12Vrms Figure 5. Audio signal output |
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Similar Description - AK4424 |
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