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參數(shù)資料
| 型號： | 933897020118 |
| 廠商： | NXP SEMICONDUCTORS |
| 元件分類： | 通信及網(wǎng)絡(luò) |
| 英文描述： | SPECIALTY TELECOM CIRCUIT, PDSO8 |
| 封裝： | PLASTIC, SOT-96, SO-8 |
| 文件頁數(shù)： | 11/18頁 |
| 文件大?。?/td> | 144K |
| 代理商： | 933897020118 |
September 1994
2
Philips Semiconductors
Product specication
Supply circuit with power-down for
telephone set peripherals
TEA1081
FEATURES
High input impedance for audio signals
Low DC series resistance
High output current
Large audio signal handling capability
Low distortion
Two modes of operation:
– output voltage that follows the DC line voltage
– regulated output voltage
Power-down input
Low number of external components.
GENERAL DESCRIPTION
The TEA1081 is an integrated circuit for use in
line-powered telephone sets to supply peripheral circuits
for extended dialling and/or loudspeaker facilities.
The IC uses a part of the surplus line current normally
drawn by the voltage regulator of the speech/transmission
circuit. A power-down function isolates the IC from its load
and reduces the input current.
QUICK REFERENCE DATA
ORDERING INFORMATION
SYMBOL
PARAMETER
CONDITIONS
MIN.
TYP.
MAX.
UNIT
VLN
operating DC line voltage
2.5
12.0
V
VO
DC output voltage
2.0
10.0
V
VLN-O
voltage drop from line to output
IO =0mA
0.5
V
RS
internal series resistance
20
IO
output current (pin 7)
VLN =4V
TEA1081
30
mA
TEA1081T
20
mA
VLN(rms)
AC line voltage (RMS value)
VLN =4V; IO =15mA;
THD=2%
1.5
V
IINT
internal supply current
VLN =4V; IO = 0 mA;
PD = LOW; VSP = VO
0.8
1.4
mA
Tamb
operating ambient temperature
25
+70
°C
TYPE NUMBER
PACKAGE
NAME
DESCRIPTION
VERSION
TEA1081
DIP8
plastic dual in-line package; 8 leads (300 mil)
SOT97-1
TEA1081T
SO8
plastic small outline package; 8 leads; body width 3.9 mm
SOT96-1
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