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參數資料
| 型號： | PT2256V |
| 廠商： | Princeton Technology Corporation |
| 英文描述： | Electronic Volume Controller IC |
| 中文描述： | 電子音量控制IC |
| 文件頁數： | 5/19頁 |
| 文件大?。?/td> | 425K |
| 代理商： | PT2256V |
URL:http://www.princeton.com.tw
Fax:886-2-29174598
Tel:886-2-66296288
DC OUTPUT FOR VOLUME LEVEL
The DC Output for the Volume Level Meter is internally connected to the D/A Converter. PT2256V has
8 stages of output voltage with each stage corresponding to a particular volume level. Please refer to
the table below:
Step
Attenuation (dB)
0-3
0-6
4-7
8-14
8-11
16-22
12-15
24-30
16-19
32-38
20-23
40-50
24-27
54-66
28-31
70-
∞
UP/DOWN VOLUME CONTROL
PT2256V features two Volume Control Pins, namely: UP and DN. UP is the control pin used to
increase volume level while the DN is the control pin used to decrease the volume level. Thus, volume
level may regulated using the Up or Down Keys. These keys are operated on a 1 step/1 push volume
level control when UP or DN keys are set to “L” Level. If the keys are continuously pressed (input
“Low”), then the volume level continuously steps up or down as the case maybe. Please refer to the
diagram below for the timing of the key input.
/UP, /DN Input
PT2256V V1.2
- 5 -
August, 2006
Electronic Volume Controller IC
PT2256V
Output Voltage (V)
7/8 VDD
6/8 VDD
5/8 VDD
4/8 VDD
3/8 VDD
2/8 VDD
1/8 VDD
0
t
T
a
Volume Level
Control
Notes:
1. t= Preventive Time for Chattering (2.2 x 1/fosc )
2. T= Switching Time to Automatic Mode (10 x 1/fosc)
3. a=Up, Down Speed (2x1/fosc)
相關PDF資料 |
PDF描述 |
|---|---|
| PT2256V(L) | Electronic Volume Controller IC |
| PT2256V-S | Electronic Volume Controller IC |
| PT2256V-S(L) | Electronic Volume Controller IC |
| PT2256V-SN | Electronic Volume Controller IC |
| PT2256V-SN(L) | Electronic Volume Controller IC |
相關代理商/技術參數 |
參數描述 |
|---|---|
| PT2256V(L) | 制造商:PTC 制造商全稱:Princeton Technology Corp 功能描述:Electronic Volume Controller IC |
| PT2256VL | 制造商:PTC 制造商全稱:Princeton Technology Corp 功能描述:Electronic Volume Controller IC |
| PT2256V-S | 制造商:PTC 制造商全稱:Princeton Technology Corp 功能描述:Electronic Volume Controller IC |
| PT2256V-S(L) | 制造商:PTC 制造商全稱:Princeton Technology Corp 功能描述:Electronic Volume Controller IC |
| PT2256V-SL | 制造商:PTC 制造商全稱:Princeton Technology Corp 功能描述:Electronic Volume Controller IC |
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