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參數(shù)資料
| 型號(hào)： | TEA7092TQ |
| 廠商： | 意法半導(dǎo)體 |
| 英文描述： | TELEPHONE ANALOG FRONT END |
| 中文描述： | 電話模擬前端 |
| 文件頁(yè)數(shù)： | 32/57頁(yè) |
| 文件大?。?/td> | 574K |
| 代理商： | TEA7092TQ |
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III.2 - LoudspeakingPart Supply
The
loudspeaking part is powered on
Pin V
LS
(Pin 1).
The final stage of the transmit path is simultane-
ously used to amplify the transmit signal and to
power supply the loudspeakingpart.
Figure 46 showsthe loudspeakingpart supply.
After an OFF-HOOK action, during the start-up
period and still the microcontroller reset is low, the
current power supply of the loudspeaking part is
used to charge quickly the capacitor C10 on pin
V
MC
(Pin 2), capacitor which is used to power
supply the microcontroller.
Figure 47 shows the line current, I
L
, partitionin the
different paths of the TEA7092.
- I
LS
: Current available for the loudspeaker part
and other peripherals.
I
L
(mA)
0
20
10
40
30
60
50
80
70
100
90
I
L
(
I
LS
I
P
I
VMC
0
20
40
60
80
100
120
0
2
4
6
8
10
I
P
/
M
(
A
Figure 47
10
400
ITX/41
(See Transmit
Channel)
3
V
L
I
L
Istart-up
SwitchClose,
if RESETLow
and IL Present
1
2
V
MC
+
C10
V
LS
+
C1
TEA7092
A
Figure46
III - CALLPROGRESS MONITOR AND GROUP LISTENING MODES
(continued)
- I
VMC
:Currentfor themicrocontrollerpower supply.
- I
VCC
: Speechpart current consumption.
Other peripheralslike a handsfreecircuit ordiscret
CMOS logic can be powered on Pin V
LS
(Pin 1).
TEA7092 - TELEPHONE SET INTEGRATED CIRCUIT
32/57
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| TEA7092TQT | TELEPHONE ANALOG FRONT END |
| TEA7530DP | MONITOR AMPLIFIER |
| TEA7530FP | MONITOR AMPLIFIER |
| TEA7530 | Monitor Amplifier(監(jiān)聽(tīng)放大器) |
| TEA7532DP | MONITOR AMPLIFIER |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| TEA7092TQT | 制造商:STMicroelectronics 功能描述:SPEECH NETWORK ADVANCED 46DB 44TQFP - Tape and Reel |
| TEA7530 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:MONITOR AMPLIFIER |
| TEA7530DP | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:MONITOR AMPLIFIER |
| TEA7530FP | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:MONITOR AMPLIFIER |
| TEA7531 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:MONITOR AMPLIFIER |
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