參數(shù)資料
型號(hào): AK4254
廠商: Asahi Kasei Microsystems Co.,Ltd
英文描述: Capacitor-less Video Amp with 7:2 Video Switch
中文描述: 電容器的視頻放大器以7:2視頻開(kāi)關(guān)
文件頁(yè)數(shù): 7/22頁(yè)
文件大?。?/td> 341K
代理商: AK4254
ASAHI KASEI
[AK4254]
MS0586-E-01
2007/08
- 7 -
SWITCHING CHARACTERISTICS
(Ta =-40
85
°
C; AVDD=CVDD1=CVDD2=2.7V
3.6V; C
L
= 20pF)
Parameter
Control Interface Timing (3-wire Serial mode)
PDN “
” to CSN “
CCLK Period
CCLK Pulse Width Low
Pulse Width High
CDTI Setup Time
CDTI Hold Time
CSN “H” Time
CSN “
” to CCLK “
CCLK “
” to CSN “
Control Interface Timing (I
2
C Bus mode):
SCL Clock Frequency
PDN “
” to SDA “
” @SCL = “H”
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: 10)
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
Reset Timing
PDN Pulse Width (Note: 11)
Note: 10. Data must be held for sufficient time to bridge the 300 ns transition time of SCL.
Note: 11. In Serial Control Mode (P/S pin= “L”), it is recommended that the AK4254 is powered up at the PDN pin=“L”.
In Parallel Control Mode, resetting by the PDN pin = “L” is not needed when power up.
Note: 12. I
2
C is a registered trademark of Philips Semiconductors.
Symbol
Min
150
200
80
80
40
40
150
50
50
-
1.3
1.3
0.6
1.3
0.6
0.6
0
0.1
-
-
0.6
0
-
150
typ
max
Units
ns
ns
ns
ns
ns
ns
ns
ns
ns
kHz
μ
s
μ
s
μ
s
μ
s
μ
s
μ
s
μ
s
μ
s
μ
s
μ
s
μ
s
ns
pF
ns
tPDCS
tCCK
tCCKL
tCCKH
tCDS
tCDH
tCSW
tCSS
tCSH
fSCL
tPDSD
tBUF
tHD:STA
tLOW
tHIGH
tSU:STA
tHD:DAT
tSU:DAT
tR
tF
tSU:STO
tSP
Cb
400
-
-
-
-
-
-
-
-
0.3
0.3
-
50
400
tPD
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