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參數(shù)資料
| 型號： | TEA7092 |
| 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 |
| 文件頁數(shù)： | 14/57頁 |
| 文件大?。?/td> | 574K |
| 代理商： | TEA7092 |
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II - SPEECH FEATURES
II.1 - DC Characteristics
II.1.1- TEA7092DC Voltage
The voltageatPinV
L
(Pin3)oftheTEA7092isfixed
by 2 external components:
- R3 connectedbetweenPinSLPE(Pin31)andthe
ground which fixes the DC slope.
- R12connectedbetweenPinV
L
(Pin3)andPinV
S
(Pin30) which fixes the DC voltage at I
L
= 20mA
and a part of the DC slope for I
L
< 20mA.
The voltageat Pin V
L
(Pin3) is equalto :
For I
L
< 20mA:
V
L
=
R12
(
40
+
0.5
I
L
)
10
6
+
R3
(
I
L
5.6
)
with I
L
in mA.
For I
L
> 20mA:
V
L
=
V
L
(
20mA
)
+
R3
(
I
L
20
)
55
10
3
55
10
3
with I
L
in mA, V
L
(20mA) is the Pin V
L
(Pin 3)
DC valuefor I
L
= 20mA.
II.1.2- TelephoneSet DCVoltage
The telephone set DC voltage at line terminal is
equal to (seeFigure 14) :
V(LA/LB)= V
L
+ (R11a + R11b) x I
L
+ V
SWI
+ V
BRI
with :
- V
L
:DCvoltageon PinV
L
(Pin3) ofthe TEA7092.
- V
SWI
: voltageacrossthepulsedialing switch and
its protection.
- V
BRI
: voltageacross theinput rectifier bridge.
The Figures 15 to 18 give DC typical value at
Pin V
L
(Pin 3) and at line terminal (LA/LB) for dif-
ferent value of R3 and R12.
Note:
Atthemaximumlinecurrent use,thevoltage
at Pin RECIN(Pin 19) shouldbe less than 11V
DC
,
the following curves stop at the line current where
they reach 11V
DC
at Pin RECIN (Pin 19), depend-
ingof thecountry’sapplication,usethisinformation
to optimize the values of R3 and R12.
3
19
30
31
32
43
AGND
GND
SLPE
V
S
V
L
RECIN
TEA7092
R3
C11
R12
R11b
R11a
LA
LB
V
BRI
V
SWI
A
Figure 14
TEA7092 - TELEPHONE SET INTEGRATED CIRCUIT
14/57
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| TEA7092TQ | TELEPHONE ANALOG FRONT END |
| TEA7092TQT | TELEPHONE ANALOG FRONT END |
| TEA7530DP | MONITOR AMPLIFIER |
| TEA7530FP | MONITOR AMPLIFIER |
| TEA7530 | Monitor Amplifier(監(jiān)聽放大器) |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| TEA7092TQ | 制造商:STMicroelectronics 功能描述:SPEECH NETWORK ADVANCED 46DB 44TQFP - Trays |
| 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 |
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