CS4399 datasheet(26/111 Pages) CIRRUS

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CS4399 Datasheet(PDF) 26 Page - Cirrus Logic

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DS1113F1

CS4399

4.3 Class H Output

instance of repetitive high-level transients in the input signal. Fig. 4-5 shows examples of this transitional behavior.

Figure 4-5. VCP_FILT Hysteresis

4.3.3

External VCP_FILT Supply Mode

To bypass the CS4399 Class-H charge-pump circuit, provide external VCP_FILT± supply with the following conditions:

• When CS4399 is operating, apply +3.0 V with ±5% accuracy to VCP_FILT+ and apply –3.0 V with ±5% accuracy

to VCP_FILT–.

• When CS4399 is powered down, external circuits present Hi-Z state to the VCP_FILT+ pin (>1k impedance) and

VCP_FILT– pin (>10k impedance).

Output Level

+VCP

Output Stage

Rail Voltage

Time

–VCP

5.5 s

–11 dB

+VP_LDO

–VP_LDO

–11.5 dB

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