TEA1081 데이터 시트보기 (PDF) - Philips Electronics

부품명

상세내역

제조사

TEA1081

Supply circuit with power-down for telephone set peripherals

Philips Electronics 

Philips Semiconductors

Supply circuit with power-down for

telephone set peripherals

Product specification

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.

QUICK REFERENCE DATA

SYMBOL

VLN

VO

∆VLN-O

RS

IO

VLN(rms)

PARAMETER

operating DC line voltage

DC output voltage

voltage drop from line to output

internal series resistance

output current (pin 7)

TEA1081

TEA1081T

AC line voltage (RMS value)

IINT

internal supply current

Tamb

operating ambient temperature

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.

CONDITIONS

IO = 0 mA

VLN = 4 V

VLN = 4 V; IO = 15 mA;

THD = 2%

VLN = 4 V; IO = 0 mA;

PD = LOW; VSP = VO

MIN.

2.5

2.0

−

−

−

−

−

−

−25

TYP.

−

−

0.5

20

−

−

1.5

0.8

−

MAX. UNIT

12.0 V

10.0 V

−

V

−

Ω

30

mA

20

mA

−

V

1.4 mA

+70 °C

ORDERING INFORMATION

TYPE NUMBER

TEA1081

TEA1081T

NAME

DIP8

SO8

PACKAGE

DESCRIPTION

plastic dual in-line package; 8 leads (300 mil)

plastic small outline package; 8 leads; body width 3.9 mm

VERSION

SOT97-1

SOT96-1

September 1994

2

Share Link: