- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄373630 > TEA7092TQT (意法半導(dǎo)體) TELEPHONE ANALOG FRONT END PDF資料下載
參數(shù)資料
| 型號(hào)： | TEA7092TQT |
| 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)： | 26/57頁(yè) |
| 文件大?。?/td> | 574K |
| 代理商： | TEA7092TQT |
第1頁(yè)第2頁(yè)第3頁(yè)第4頁(yè)第5頁(yè)第6頁(yè)第7頁(yè)第8頁(yè)第9頁(yè)第10頁(yè)第11頁(yè)第12頁(yè)第13頁(yè)第14頁(yè)第15頁(yè)第16頁(yè)第17頁(yè)第18頁(yè)第19頁(yè)第20頁(yè)第21頁(yè)第22頁(yè)第23頁(yè)第24頁(yè)第25頁(yè)當(dāng)前第26頁(yè)第27頁(yè)第28頁(yè)第29頁(yè)第30頁(yè)第31頁(yè)第32頁(yè)第33頁(yè)第34頁(yè)第35頁(yè)第36頁(yè)第37頁(yè)第38頁(yè)第39頁(yè)第40頁(yè)第41頁(yè)第42頁(yè)第43頁(yè)第44頁(yè)第45頁(yè)第46頁(yè)第47頁(yè)第48頁(yè)第49頁(yè)第50頁(yè)第51頁(yè)第52頁(yè)第53頁(yè)第54頁(yè)第55頁(yè)第56頁(yè)第57頁(yè)
II.5 - Receive Channel
II.5.1 - GeneralInformation
(Maximum Gain Adjustment)
The receivepath amplifiesseveral signals :
- The line signal to the earphone with an interme-
diate output, Pin REOUT (Pin 20) so as to use
thissignal as aninput for the loudspeakerampli-
fier or for a handfree circuit such as TEA7540.
- The DTMFsinewave as a confidencetonelevel.
- The waiting melody sinewave as an earphone
levelcontrol.
At onetime, only one of these signals is amplified,
the choiceis made throughthe serial bus interface
with the microcontroller.
Figure 41 shows the receive channel block dia-
gram.
II - SPEECHFEATURES
(continued)
6
6
REOUT
19
RECIN
15
SNSL
16
SNLL
C12
C27
26
V
CC
Z
R
Z
R
R13
R27
V
L
TEA7092
R11b
R11a
+
C8
R14
R17
32
GREC
35
EAR+
Mute
V
CC
Mute
V
CC
36
EAR-
20k
20k
40k
10k
Mute
I
L
20
21 to 15dB
Sidetone
Mixer
& AGC
Stages
A2
25
V
REF
C14
A3
A1
37
DTMF
C13
Idtmf
or Isinwave
Vear
0.6V
A
Figure41
The signal VRECIN - VSNLLor VRECIN - VSNSL
or a combination of both is amplified to the ear-
phone outputs.
AsdescribedinSectionII.4.2andSectionII.4.3the
signal V1 is attenuated through the sidetone net-
work. After this attenuation,the received signal is
amplifiedbythe Sidetonemixer and A.G.C.stages
with an amplification,of 21dBona longline length,
I
LL
, which is the maximum receive gain, and of
15dB on a short line length, I
SL
, when the A.G.C.
feature is used. The final gain adjustment is done
on Pin GREC (Pin 20) by adjusting R14 and R17
values.
TEA7092 - TELEPHONE SET INTEGRATED CIRCUIT
26/57
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| TEA7530DP | MONITOR AMPLIFIER |
| TEA7530FP | MONITOR AMPLIFIER |
| TEA7530 | Monitor Amplifier(監(jiān)聽(tīng)放大器) |
| TEA7532DP | MONITOR AMPLIFIER |
| TEA7532FP | MONITOR AMPLIFIER |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| 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 |
| TEA7532 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:MONITOR AMPLIFIER |
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。