參數(shù)資料
型號(hào): AK4520
廠商: Asahi Kasei Microsystems Co.,Ltd
英文描述: 100dB 20Bit Stereo ADC & DAC
中文描述: 100dB的20位立體聲ADC
文件頁(yè)數(shù): 7/19頁(yè)
文件大小: 198K
代理商: AK4520
ASAHI KASEI
[AK4520A]
0163-E-00
1997/3
- 7 -
DIGITAL CHARACTERISTICS
(Ta=25
°
C; VA,VD=2.7
5.5V)
Parameter
Symbol
VIH
VIL
VOH
VOL
Iin
min
typ
-
-
-
max
-
30%VD
-
0.5
±
10
Units
V
V
V
V
uA
High-Level Input Voltage
Low-Level Input Voltage
High-Level Output Voltage (Iout=-100uA)
Low-Level Output Voltage (Iout=100uA)
Input Leakage Current
70%VD
-
VD-0.5
-
-
-
SWITCHING CHARACTERISTICS
(Ta=25
°
C; VA,VD=2.7
5.5V; C
L
=20pF)
Parameter
Master Clock Timing 256fs:
Pulse Width Low
Pulse Width High
384fs:
Pulse Width Low
Pulse Width High
LRCK Frequency
Symbol
fCLK
tCLKL
tCLKH
fCLK
tCLKL
tCLKH
fs
fs
min
4.096
27
27
6.144
20
20
16
16
45
typ
max
13.824
Unit
MHz
ns
ns
MHz
ns
ns
kHz
20.736
VD=2.7-3.6V
VD=4.5-5.5V
44.1
44.1
50
54
55
Duty Cycle (Note 11 )
Serial Interface Timing
SCLK Period
SCLK Pulse Width Low
Pulse Width High
LRCK Edge to SCLK "
" (Note 12 )
SCLK "
" to LRCK Edge (Note 12 )
LRCK to SDTO(MSB)
SCLK "
" to SDTO
SDTI Hold Time
SDTI Setup Time
Reset Timing
PWAD & PWDA Pulse Width
PWAD "
" to SDTO valid (Note 13 )
Notes: 11.If the duty cycle of LRCK changes larger than 5 to 50%, the AK4520A is reset by the internal phase
circuit automatically.
12.SCLK rising edge must not occur at the same time as LRCK edge.
13.These cycles are the number of LRCK rising from PWAD rising.
%
tSCK
tSCKL
tSCKH
tLRS
tSLR
tLRM
tSSD
tSDH
tSDS
289.4
120
120
30
30
40
40
100
100
ns
ns
ns
ns
ns
ns
ns
ns
ns
tPW
tPWV
150
516
ns
1/fs
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