參數(shù)資料
型號(hào)： PT2256L
廠商： Princeton Technology Corporation
英文描述： Electronic Volume Controller IC
中文描述： 電子音量控制IC
文件頁(yè)數(shù)： 7/21頁(yè)
文件大?。?/td> 409K
代理商： PT2256L
URL:http://www.princeton.com.tw
Fax:886-2-29174598
Tel:886-2-66296288
INITIALIZATION WHEN POWER ON
PT2256 has an auto-initialization function during the Power On period. When Power is turned ON, the
volume level is set to the initial value of -46 dB by setting the RST pin to “L” level. Please refer to the
diagram below.
VDD
PT2256 V1.7
- 7 -
August, 2006
Electronic Volume Controller IC
PT2256
/RST
0V
VIL
VDD
T
T 1ms
BACK UP WHEN POWER OFF
When the /INH Pin is set at “L” Level, all input and output pins are disabled and the current
consumption is reduced to the minimum. Under this condition, the backup becomes possible. Please
refer to the diagram below:
VDD
VDD
0V
Normal Mode
4.5V
Backup Mode
Normal Mode
Backup
VDD min > 4.5V
Backup Data is lost
The backup circuit is given below:
IN4001
10K
1000 F/16V
+
-
10K
51K
PT2256
VDD
VSS
/INH
VDD
VSS
Note:
If the VDD drops from 12V to 4.5V, then the backup is possible for a period of 6 days. However, if
VDD-Vss drops below 4.5V, the backup becomes impossible.
相關(guān)PDF資料
PDF描述
PT2256-SL Electronic Volume Controller IC
PT2256-SN Electronic Volume Controller IC
PT2256-SNL Electronic Volume Controller IC
PT2256V Electronic Volume Controller IC
PT2256V(L) Electronic Volume Controller IC
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
PT2256-S 制造商:PTC 制造商全稱:Princeton Technology Corp 功能描述:Electronic Volume Controller IC
PT2256-SL 制造商:PTC 制造商全稱:Princeton Technology Corp 功能描述:Electronic Volume Controller IC
PT2256-SN 制造商:PTC 制造商全稱:Princeton Technology Corp 功能描述:Electronic Volume Controller IC
PT2256-SNL 制造商:PTC 制造商全稱:Princeton Technology Corp 功能描述:Electronic Volume Controller IC
PT2256V 制造商:PTC 制造商全稱:Princeton Technology Corp 功能描述:Electronic Volume Controller IC
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