參數(shù)資料
型號： TEA1097TV
廠商： NXP SEMICONDUCTORS
元件分類： 無繩電話/電話
英文描述： Speech and loudspeaker amplifier IC with auxiliary inputs/outputs and analog multiplexer
中文描述： TELEPHONE SPEECH CKT, PDSO40
封裝： PLASTIC, SOT-158-1, VSOP-40
文件頁數(shù)： 7/36頁
文件大?。?/td> 167K
代理商： TEA1097TV
1999 Apr 08
7
Philips Semiconductors
Product specification
Speech and loudspeaker amplifier IC with
auxiliary inputs/outputs and analog multiplexer
TEA1097
Fig.3 Pin configuration (QFP44).
handbook, full pagewidth
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TEA1097H
FCA019
QR
DTMF
MIC
+
MIC
TXIN
GATX
TXOUT
n.c.
n.c.
VOL
HFRX
n.c.
n.c.
n.c
n.c
n.c
DLC
ESI
GALS
GNDTX
T
R
A
M
M
P
H
R
G
A
H
G
S
L
R
I
A
M
S
n
L
V
n.c
VBB
FUNCTIONAL DESCRIPTION
All data given in this chapter are typical values, except
when otherwise specified.
Supplies
L
INE INTERFACE AND INTERNAL SUPPLY
(
PINS
LN, SLPE,
REG
AND
V
BB
)
The supply for the TEA1097 and its peripherals is obtained
from the line. The IC generates a stabilized reference
voltage (V
ref
) between pins SLPE and GND. This
reference voltage is equal to 3.7 V for line currents lower
than 18 mA. It than increases linearly with the line current
and reaches the value of 6.1 V for line currents higher than
45 mA. For line currents below 9 mA, the internal
reference voltage generating V
ref
is automatically adjusted
to a lower value. This is the so-called low voltage area and
the TEA1097 has limited performances in this area
(see Section “Low voltage behaviour”). This reference
voltage is temperature compensated.
The voltage between pins SLPE and REG is used by the
internal regulator to generate the stabilized reference
voltage and is decoupled by means of a capacitor between
pins LN and REG.
This capacitor converted into an equivalent inductance
realizes the set impedance conversion from its DC value
(R
SLPE
) to its AC value (done by an external impedance).
The IC regulates the line voltage at pin LN and it can be
calculated as follows:
where:
I
line
= line current
I
x
= current consumed on pin LN (approximately a
few
μ
A)
I
SLPE
= current flowing through the R
SLPE
resistor.
V
LN
V
ref
R
SLPE
I
×
+
SLPE
=
I
SLPE
I
line
I
x
–
=
相關(guān)PDF資料
PDF描述
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
TEA1098 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Speech and handsfree IC
TEA1098A 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Speech and handsfree IC
TEA1098AH 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Speech and handsfree IC
TEA1098ATV 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Speech and handsfree IC
TEA1098H 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Speech and handsfree IC
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