AK4145 Datasheet, PDF (6/27 Pages) Asahi Kasei Microsystems – Digital BTSC Stereo Encoder

[AK4145]
DC CHARACTERISTICS
(Ta=-20∼ 85°C; AVDD=TVDD=1.7~3.6V, DVDD=1.7~1.9V)
Parameter
Symbol
min
typ
Max
Units
High-Level Input Voltage
TVDD < 2.7V
VIH 80%TVDD
-
-
V
TVDD ≥ 2.7V(PSN pin)
VIH 80%TVDD
-
-
V
TVDD ≥ 2.7V(except PSN pin)
VIH 70%TVDD
-
-
V
Low-Level Input Voltage
TVDD < 2.7V
TVDD ≥ 2.7V(PSN pin)
TVDD ≥ 2.7V(except PSN pin)
VIL
-
VIL
-
VIL
-
V
-
20%TVDD
-
20%TVDD
V
30%TVDD
V
Low-Level Output Voltage (SDA pin: Iout= 3mA) VOL
-
-
0.3
V
Input Leakage Current
Iin
-
-
± 10
μA
SWITCHING CHARACTERISTICS
(Ta=-20∼ 85°C; AVDD=2.7 ~ 3.6V, TVDD=1.7~3.6V, DVDD=1. 7~1.9V)
Parameter
Symbol
min
typ
Master Clock Frequency
Duty Cycle
fCLK
dCLK
8.192
40
LRCK Frequency
fs
32
Duty Cycle
Duty
45
Audio Interface Timing
BICK Period
BICK Pulse Width Low
Pulse Width High
BICK rising to LRCK Edge
(Note 6)
LRCK Edge to BICK rising
(Note 6)
SDTI Hold Time
SDTI Setup Time
Control Interface Timing (I²C Bus)
SCL Clock Frequency
Bus Free Time Between Transmissions
Start Condition Hold Time
(prior to first clock pulse)
Clock Low Time
Clock High Time
Setup Time for Repeated Start Condition
SDA Hold Time from SCL Falling
(Note 7)
SDA Setup Time from SCL Rising
Rise Time of Both SDA and SCL Lines
Fall Time of Both SDA and SCL Lines
Setup Time for Stop Condition
Pulse Width of Spike Noise Suppressed by Input Filter
Capacitive load on bus
tBCK
tBCKL
tBCKH
tBLR
tLRB
tSDH
tSDS
1/128fs
30
30
20
20
20
20
fSCL
-
tBUF
1.3
tHD:STA
0.6
tLOW
1.3
tHIGH
0.6
tSU:STA
0.6
tHD:DAT
0
tSU:DAT
0.1
tR
-
tF
-
tSU:STO
0.6
tSP
-
Cb
0
Reset Timing
PDN Pulse Width
(Note 8)
tPD
150
Note 6. BICK rising edge must not occur at the same time as LRCK edge.
Note 7. Data must be held for sufficient time to bridge the 300 ns transition time of SCL.
Note 8. The AK4145 can be reset by bringing the PDN pin = “L”.
Note 9. I²C-bus is a trademark of NXP B.V.
max
36.8640
60
48
55
Units
MHz
%
kHz
%
ns
ns
ns
ns
ns
ns
ns
400
kHz
-
μs
-
μs
-
μs
-
μs
-
μs
-
μs
-
μs
0.3
μs
0.3
μs
-
μs
50
ns
400
pF
ns
MS0982-E-01
-6-
2010/09