AK4641 Datasheet, PDF (10/51 Pages) Asahi Kasei Microsystems – 16 BIT CODEC WITH BLUETOOTH INTERFACE

ASAHI KASEI
[AK4641]
DC CHARACTERISTICS
(Ta=−10 ∼ 70°C; AVDD, DVDD, BVDD=2.6 ∼ 3.6V)
Parameter
Symbol
min
typ
Max
Units
High-Level Input Voltage
VIH 70%DVDD
-
-
V
Low-Level Input Voltage
VIL
-
-
30%DVDD V
Input Voltage at AC Coupling
(Note 18)
VAC 50%DVDD
-
-
V
High-Level Output Voltage
(Iout=−200µA)
VOH DVDD−0.2
-
-
V
Low-Level Output Voltage
(Except SDA pin: Iout=200µA)
VOL
-
-
0.2
V
(SDA pin: Iout=3mA)
VOL
-
-
0.4
V
Input Leakage Current
Iin
-
-
±10
µA
Note 18. The external clock is input to MCLK pin via AC coupled capacitor.
SWITCHING CHARACTERISTICS
(Ta=−10 ∼ 70°C; AVDD, DVDD, BVDD=2.6 ∼ 3.6V; C_L=20pF)
Parameter
Symbol
min
typ
16bit Stereo CODEC Interface Timing:
Master Clock Timing (MCLK pin)
Frequency
fCLK
1.792
-
Pulse Width Low
tCLKL 0.4/fCLK
-
Pulse Width High
AC Pulse Width (Note 19)
tCLKH 0.4/fCLK
-
tACW 0.4/fCLK
-
LRCK Timing
Frequency
Duty Cycle
fs
7
-
Duty
45
-
Audio Interface Timing
BICK Period
tBCK
312.5
-
BICK Pulse Width Low
tBCKL
130
-
Pulse Width High
tBCKH
130
-
LRCK Edge to BICK “↑” (Note 20)
tLRB
50
-
BICK “↑” to LRCK Edge (Note 20)
tBLR
50
-
LRCK to SDTO (MSB) (Except I²S mode)
tLRS
-
-
BICK “↓” to SDTO
tBSD
-
-
SDTI Hold Time
SDTI Setup Time
tSDH
50
-
tSDS
50
-
Note 19. Refer to Figure 3.
Note 20. BICK rising edge must not occur at the same time as LRCK edge.
max
Units
12.288
-
-
-
48
55
-
-
-
-
-
80
80
-
-
MHz
ns
ns
ns
kHz
%
ns
ns
ns
ns
ns
ns
ns
ns
ns
MS0301-E-00
- 10 -
2004/05