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參數(shù)資料
| 型號： | TEA1069N |
| 廠商： | NXP SEMICONDUCTORS |
| 元件分類： | 無繩電話/電話 |
| 英文描述： | Versatile speech/dialler/ringer with music-on-hold |
| 中文描述： | TELEPHONE MULTIFUNCTION CKT, PDIP42 |
| 封裝： | SHRINK, PLASTIC, DIP-42 |
| 文件頁數(shù)： | 8/44頁 |
| 文件大?。?/td> | 301K |
| 代理商： | TEA1069N |
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1998 Jan 08
8
Philips Semiconductors
Product specification
Versatile speech/dialler/ringer with
music-on-hold
TEA1069; TEA1069A
Fig.4 Supply arrangement.
handbook, full pagewidth
MBH197
SLPE
STAB
REG
LN
AC
DC
peripheral
circuits
C1
0.5 mA
Rline
Rexch
Vexch
Iline
Ip
R1
ICC
VCC
VEE
ISLPE
+
0.5 mA
ISLPE
C3
R5
R9
TEA1069
TEA1069A
Thus, the regulated voltage on the line terminal (V
LN
) can
be calculated as:
, where
V
LN
V
ref
I
SLPE
R9
+
=
–
=
V
ref
is the internally generated temperature compensated
reference voltage of 3.7 V and R9 is an external resistor
connected between SLPE and V
EE
.
The circuit has an internal current stabilizer operating at a
level determined by resistor R5 connected between STAB
and V
EE
.
In normal use the value of R5 would be 3.6 k
and the
value of R9 would be 20
.
Changing the value of R5 or R9 will affect microphone
gain, DTMF gain, gain control characteristics, sidetone
level, maximum output swing on LN and the DC
characteristics (especially at low line current).
At line currents below 9 mA the internal reference voltage
is automatically adjusted to a lower value (typically 1.6 V
×
I
SLPE
I
line
I
CC
I
p
0.5
10
3
–
A
×
+
+
at 1 mA). This means that more sets can be operated in
parallel with DC line voltages (excluding the polarity guard)
down to an absolute minimum voltage of 1.6 V. At line
currents below 9 mA the circuit has limited sending and
receiving levels.
Under normal conditions, when I
SLPE
>> I
CC
+ 0.5 mA + I
p
,
the static behaviour of the circuit is that of a 3.7 V regulator
diode (V
ref
) with an internal resistance equal to that of R9.
In the audio frequency range the dynamic impedance is
largely determined by R1. Figure 5 shows the equivalent
impedance of the circuit.
Current (I
p
) available from V
CC
for the dialler part and
peripheral circuits depends on the external components
used. Figure 6 shows this current for V
CC
> 2.2 V. When
MUTE is HIGH i.e. when the receiving amplifier (supplied
from V
CC
) is driven, the available current is further
reduced. Current availability can be increased by
connecting the supply IC TEA1081 in parallel with R1, or
by increasing the DC line voltage by means of an external
resistor (R
VA
= R60) connected between REG and SLPE.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| TEA1081 | Supply circuit with power-down for telephone set peripherals |
| TEA1081T | Supply circuit with power-down for telephone set peripherals |
| TEA1083 | Call progress monitor for line powered telephone sets |
| TEA1083AT | Call progress monitor for line powered telephone sets |
| TEA1083A | Call progress monitor for line powered telephone sets |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| TEA1081 | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Supply circuit with power-down for telephone set peripherals |
| TEA1081T | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Supply circuit with power-down for telephone set peripherals |
| TEA1083 | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Call progress monitor for line powered telephone sets |
| TEA1083A | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Call progress monitor for line powered telephone sets |
| TEA1083AT | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Call progress monitor for line powered telephone sets |
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