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參數(shù)資料
| 型號： | AK4254VF |
| 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視頻開關 |
| 文件頁數(shù)： | 4/22頁 |
| 文件大小： | 341K |
| 代理商： | AK4254VF |
[AK4254]
MS0586-E-01
2007/08
- 4 -
No.
Pin Name
I/O
Function
Power-Down Mode Pin
When at “L”, the AK4254 is in the power-down mode and held in reset, the AK4254
must always be reset upon power-up in Serial Control Mode (P/S pin= “L”).
Video Output #2 Pin.
Negative Voltage Output Pin for Video Amplifier 2
Connect to CVSS2 with a 1.0
μ
F capacitor that has the low ESR (
Equivalent Series
Resistance
) over all temperature range. When this capacitor has the polarity, the
positive polarity pin should be connected to the CVSS2 pin. Non-polarity capacitors can
also be used.
Charge Pump Ground Pin, 0V
Connect to CVEE2 with a 1.0
μ
F capacitor that has the low ESR (
Equivalent Series
Resistance
) over all temperature range. When this capacitor has the polarity, the
positive polarity pin should be connected to the CVSS2 pin. Non-polarity capacitors can
also be used.
Negative Charge Pump Capacitor Terminal 2 Pin
Connect to CP2 with a 1.0
μ
F capacitor that has the low ESR (
Equivalent Series
Resistance
) over all temperature range. When this capacitor has the polarity, the
positive polarity pin should be connected to the CP2 pin. Non polarity capacitors can
also be used.
Positive Charge Pump Capacitor Terminal 2 Pin
Connect to CN2 with a 1.0
μ
F capacitor that has the low ESR (
Equivalent Series
Resistance
) over all temperature range. When this capacitor has the polarity, the
positive polarity pin should be connected to the CP2 pin. Non polarity capacitors can
also be used.
Charge Pump Power Supply Pin, 2.7V
～
3.6V
Note: All digital input pins (CADO/SEL10, CADT/SEL11, CSN/SEL12, CCLK/SCL/SEL20, CDTI/SDA/SEL21,
I2C/SEL22) must not be left floating.
■
Handling of Unused Pin
The unused I/O pins should be processed appropriately as below.
Classification
Pin Name
Analog
VIN1-7
Digital
CSN/SEL12
24
PDN
I
25
VOUT2
O
26
CVEE2
O
27
CVSS2
-
28
CN2
I
29
CP2
O
30
CVDD2
-
Setting
These pins should be open.
These pins should be connected to AVDD or AVSS.
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