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參數(shù)資料
| 型號： | TEA1096AT |
| 廠商： | NXP SEMICONDUCTORS |
| 元件分類： | 無繩電話/電話 |
| 英文描述： | Speech and listening-in IC |
| 中文描述： | TELEPHONE SPEECH CKT, PDSO28 |
| 封裝： | PLASTIC, SO-28 |
| 文件頁數(shù)： | 15/32頁 |
| 文件大?。?/td> | 390K |
| 代理商： | TEA1096AT |
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November 1994
15
Philips Semiconductors
Product Specification
Speech and listening-in IC
TEA1096; TEA1096A
Again, it means that: Z
LI'
=
α ×
Z
line
and Z
BAL
=
α ×
Z
SET
Where
α
is a scale factor allowing Z
LI'
to be in the order of
10 k
(DC biasing to V
ref
has to be ensured on BAL1 and
BAL2).
As the line impedance Z
line
varies considerably with the
line length, two anti-sidetone networks can be used. One
of them Z
Ll'
, connected to BAL2 is optimized for long lines,
the other one Z
Ls'
, connected to BAL1 is optimized for
short lines:
Where:
Z
Ll'
=
α ×
Z
line
(long)
Z
Ls'
=
α ×
Z
line
(short)
Z
BAL1
=
α ×
Z
SET
Z
BAL2
=
α ×
Z
SET
.
Fig.15 Complete anti-sidetone network.
Switching from one network to the other is carried out
continuously with the line current, when the R
AGC
resistor
is connected. When the R
AGC
resistor is not connected,
switching from one network to the other is not possible
(see automatic gain control). Only one network has then to
be applied.
It is also possible to use only one anti-sidetone network. In
this event, both inputs BAL1 and BAL2 must be
short-circuited.
Loudspeaker amplifier: pins LSI and QLS
The loudspeaker amplifier has an asymmetrical input LSI
which is referenced to an internal voltage reference of
1.25 V via an internal resistance of 10 k
. The input signal
can be taken from one of the earpiece outputs QRP or
QRM via a potentiometer (R
POT
). The attenuation has to
be chosen in accordance with the gain G
vrx
of the receiving
amplifier.
The input stage can handle up to 200 mV (RMS) at room
temperature for 3% of THD.
The gain of the loudspeaker amplifier is fixed at 35.5 dB.
The output QLS is referenced to a DC level of
1
2
V
BB
to
offer rail-to-rail output swing.
The maximum voltage gain from line to loudspeaker has to
be fixed in relation to the side-tone transfer of the
telephone set. An enlarged listening-in gain improves the
listening-in behaviour but can introduce audible
instabilities in the form of howling during normal use of the
set. The loudspeaker can be disabled by short-circuiting
DLL/DIL input to V
EE
.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| TEA1096T | Speech and listening-in IC |
| TEA1098A | Speech and handsfree IC |
| TEA1098AH | Speech and handsfree IC |
| TEA1098ATV | Speech and handsfree IC |
| TEA1507 | GreenChipII SMPS control IC |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| TEA1096ATD-T | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Telephone Speech Circuit |
| TEA1096T | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Speech and listening-in IC |
| TEA1096TD-T | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Telephone Speech Circuit |
| TEA1097 | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Speech and loudspeaker amplifier IC with auxiliary inputs/outputs and analog multiplexer |
| TEA1097H | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Speech and loudspeaker amplifier IC with auxiliary inputs/outputs and analog multiplexer |
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