TEA1081 Philips Semiconductors, TEA1081 Datasheet - Page 2

• Manufacturer Part Number: TEA1081
• Description: Supply circuit with power-down for telephone set peripherals
• Manufacturer: Philips Semiconductors

Philips Semiconductors
FEATURES
QUICK REFERENCE DATA
ORDERING INFORMATION
September 1994
V
V
R
I
V
I
T
O
INT
TYPE NUMBER
V
amb
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.
LN
O
LN(rms)
S
Supply circuit with power-down for
telephone set peripherals
LN-O
TEA1081T
SYMBOL
TEA1081
operating DC line voltage
DC output voltage
voltage drop from line to output
internal series resistance
output current (pin 7)
AC line voltage (RMS value)
internal supply current
operating ambient temperature
TEA1081
TEA1081T
NAME
DIP8
SO8
PARAMETER
plastic dual in-line package; 8 leads (300 mil)
plastic small outline package; 8 leads; body width 3.9 mm
2
I
V
V
THD = 2%
V
PD = LOW; V
O
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.
LN
LN
LN
DESCRIPTION
= 0 mA
PACKAGE
= 4 V
= 4 V; I
= 4 V; I
CONDITIONS
O
O
= 15 mA;
= 0 mA;
SP
= V
O
2.5
2.0
MIN.
25
0.5
20
1.5
0.8
TYP.
Product specification
TEA1081
12.0
10.0
30
20
1.4
+70
MAX.
VERSION
SOT97-1
SOT96-1
V
V
V
mA
mA
V
mA
UNIT
C