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參數(shù)資料
| 型號(hào)： | PSB4851 |
| 英文描述： | Analog Front End for Sophisticated Answering Machine |
| 中文描述： | 模擬前端的精密應(yīng)答機(jī) |
| 文件頁數(shù)： | 15/44頁 |
| 文件大小： | 752K |
| 代理商： | PSB4851 |
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PSB 4851
Data Sheet
15
09.99
2.2
Line Powered Operation
The PSB 4851 supports line powered operation by a flexible power management. The
controller can power down all elements that are not needed for the current task. In
particular, the following three states are useful in line powered operation:
1.
Idle
All elements are powered down. The power consumption is minimal. This state is
automatically entered by reset.
2.
Ringing
MIC1 is in bypass mode, PREFI1 is powered up and ALS is connected to PREFI1.
Therefore a signal fed into AXI is amplified by ALS and output at LSP/LSN. In order to
maximize the loudness of the ringing signal one of the output drivers of ALS (either
LSP or LSN) can be forced to GND thus providing a single ended output. Figure 2-3
shows the signal routing and the remaining active elements in this mode (single ended
mode).
Figure 2-3
Emergency Ringing Mode
V
REF
AXI
LSP
LSN
ALS
50
PREFI
1
VREF
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| PSB4851TV2.1 | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
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