- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄383995 > TEA1093T (NXP SEMICONDUCTORS) Hands-free IC PDF資料下載
參數(shù)資料
| 型號： | TEA1093T |
| 廠商： | NXP SEMICONDUCTORS |
| 元件分類： | 通信及網(wǎng)絡 |
| 英文描述： | Hands-free IC |
| 中文描述： | SPECIALTY TELECOM CIRCUIT, PDSO28 |
| 封裝： | 7.50 MM, PLASTIC, SOT-136-1, MS-013AE, SO-28 |
| 文件頁數(shù)： | 13/28頁 |
| 文件大?。?/td> | 208K |
| 代理商： | TEA1093T |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁當前第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁第28頁
1996 Feb 09
13
Philips Semiconductors
Product specification
Hands-free IC
TEA1093
In the transmit mode, the gain of the microphone amplifier
is at its maximum and the gain of the loudspeaker amplifier
is at its minimum. In the receive mode, the opposite
applies. In the idle mode, both microphone and
loudspeaker amplifier gains are halfway. The difference
between maximum and minimum is the so called switching
range. This range is determined by the ratio of R
SWR
and
R
STAB
and is adjustable between 0 and 52 dB. R
STAB
should be 3.65 k
and sets an internally used reference
current. In the basic application diagram given in Fig.16,
R
SWR
is 365 k
which results in a switching range
of 40 dB. The switch-over behaviour is illustrated in Fig.12.
In the receive mode, the gain of the loudspeaker amplifier
can be reduced using the volume control. Since the
voice-switch keeps the sum of the gains constant, the gain
of the microphone amplifier is increased at the same time
(see dashed curves in Fig.12). In the transmit mode,
however, the volume control has no influence on the gain
of the microphone amplifier or the gain of the loudspeaker
amplifier. Consequently, the switching range is reduced
when the volume is reduced. At maximum reduction of
volume, the switching range becomes 0 dB.
Fig.11 Voice-switch.
(1) c - constant.
Gvtx
+
Gvrx
=
C
(1)
VOICE SWITCH
RSTAB
RSWR
STAB
13
(10)
12
(9)
SWR
to
microphone
amplifier
from
SWT
from
volume
control
to
loudspeaker
amplifier
DUPLEX CONTROLLER
MGD225
Fig.12 Switch-over behaviour.
handbook, halfpage
400
200
0
+
400
+
200
VSWT
VIDT (mV)
Gvtx, Gvrx
(10 dB/div)
Gvtx
RVOL
(
)
5700
3800
1900
0
idle
mode
0
1900
3800
5700
Tx mode
Rx mode
Gvrx
MBG351
相關PDF資料 |
PDF描述 |
|---|---|
| TEA1094 | Hands free IC |
| TEA1094A | Hands free IC |
| TEA1094AM | Hands free IC |
| TEA1094AT | Hands free IC |
| TEA1094T | Hands free IC |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| TEA1094 | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Hands free IC |
| TEA1094A | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Hands free IC |
| TEA1094AM | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Hands free IC |
| TEA1094AT | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Hands free IC |
| TEA1094T | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Hands free IC |
發(fā)布緊急采購，3分鐘左右您將得到回復。