ak4372 ETC-unknow, ak4372 Datasheet - Page 41

• Manufacturer Part Number: ak4372
• Description: Dac With Built-in Pll & Hp-amp
• Manufacturer: ETC-unknow

3) LIN/RIN/MIN → HP-Amp
(1) When AVDD and DVDD are supplied separately, AVDD should be powered-up after DVDD rises up to 1.6V or
(2) PMVCM bit should be changed to “1” after the PDN pin is set to “H”.
(3) LINHL, MINHL, RINHR and MINHR bits should be changed to “1” after PMVCM bit is changed to “1”.
(4) When LINHL, MINHL, RINHR or MINHR bit is changed to “1”, the LIN, RIN or MIN pin is biased to 0.475 x
(5) PMHPL, PMHPR and MUTEN bits should be changed to “1” at least 2ms (in case external capacitance at the
(6) Rise time of the headphone-amp is determined by an external capacitor (C) of the MUTET pin. The rise time up to
(7) Fall time of the headphone-amp is determined by an external capacitor (C) of the MUTET pin. The fall time down to
MS0684-E-02
more. The PDN pin should be set to “H” at least 150ns after power is supplied. MCKI, BICK and LRCK can be
stopped when DAC is not used.
AVDD.
VCOM pin is 2.2μF) after LINHL, MINHL, RINHR and MINHR bits are changed to “1”.
VCOM/2 is t
VCOM/2 is t
PMHPL and PMHPR bits should be changed to “0” after the HPL and HPR pins settle to VSS1. After that, the
LINHL, MINHL, RINHR and MINHR bits should be changed to “0”.
LINHL, MINHL,
RINHR, MINHR bits
PMHPL/R bits
MUTEN bit
Power Supply
PDN pin
PMVCM bit
LIN/RIN/MIN pins
HPL/R pins
r
f
= 70k x C(typ). When C=1μF, t
= 60k x C(typ). When C=1μF, t
Figure 34. Power-up/down sequence of LIN/RIN/MIN and HP-Amp
(1) >150ns
(Hi-Z)
(2) >0s
(4)
(3) >0s
(6)
(5) >2ms
r
f
= 70ms(typ).
= 60ms(typ).
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(7)
Don’t care
(Hi-Z)
(6)
(5) >2ms
[AK4372]
2008/12