ak4366 AKM Semiconductor, Inc., ak4366 Datasheet - Page 20

• Manufacturer Part Number: ak4366
• Description: Low Power 24-bit 2ch Dac With Hp-amp
• Manufacturer: AKM Semiconductor, Inc.

ASAHI KASEI
1) Parallel mode (P/S pin = “H”)
(1) PDN pin should be set to “H” at least 150ns after the power is supplied.
(2) External clocks (MCLK, BICK, LRCK) are needed to operate DAC. When PDN pin = “L”, these clocks can be
(3) MUTEN pin should be set to “H” at least 2ms after PDN pin goes to “H”.
(4) Rise time of headphone amp is determined by external capacitor (C) of MUTET pin. The rise time up to VCOM/2 is
(5) Fall time of headphone amp is determined by external capacitor (C) of MUTET pin. The fall time down to 0V is t
(6) Analog output corresponding to digital input has the group delay (GD) of 20.8/fs (=472µs@fs=44.1kHz).
(7) Power supply should be switched off after headphone amp is powered down (HPL/R pins become “L”).
MS0248-E-01
Power-Up/Down Sequence
stopped. Headphone amp can operate without these clocks.
t
200k x C(typ). When C=1µF, time constant is 200ms(typ).
PDN pin should be set to “L” after HPL and HPR pins go to VSS.
r
Clock Input
DAC Internal
SDTI pin
MUTEN pin
HPL/R pin
Power Supply
PDN pin
= 100k x C(typ). When C=1µF, time constant is 100ms(typ).
State
Don’t care
(3) >2ms
PD
(1)
>150ns
(2)
Figure 16. Power-up/down sequence of DAC and HP-amp
(4)
Normal Operation
(6) GD
(6)
- 20 -
(5)
Don’t care
(3) >2ms
PD
(4)
(6) GD
Normal Operation
(6)
(5)
[AK4366]
(7)
PD
2004/03
f
=