tea1083at NXP Semiconductors, tea1083at Datasheet - Page 2

• Manufacturer Part Number: tea1083at
• Description: Call Progress Monitor For Line Powered Telephone Sets
• Manufacturer: NXP Semiconductors

Philips Semiconductors
FEATURES
GENERAL DESCRIPTION
The TEA1083/83A is a bipolar IC which has been
designed for use in line powered telephone sets. It is
intended to offer a monitoring facility of the line signal via
QUICK REFERENCE DATA
ORDERING INFORMATION
Notes
1. SOT97-1; 1998 Jun 18.
2. SOT38-1; 1998 Jun 18.
3. SOT162-1; 1998 Jun 18.
March 1994
I
V
I
G
I
T
TEA1083
TEA1083A
TEA1083AT
SUP
SUP
SUP
SYMBOL
amb
Internal supply
– Optimum current split-up
– Low constant current (adjustable) in transmission IC
– Nearly all line current available for monitoring
– Stabilized supply voltage
Loudspeaker amplifier with a fixed gain of 35 dB
Volume controlled by potentiometer
Power-down input (TEA1083A only)
Loudspeaker enable input.
BB
Call progress monitor for line powered
telephone sets
v
EXTENDED TYPE
NUMBER
input current range
stabilized supply current
current consumption
voltage gain of loudspeaker amplifier
minimum input current
operating ambient temperature range
PARAMETER
PINS
16
16
8
PIN POSITION
SOL
DIL
DIL
PD = HIGH; TEA1083A only
P
O
= 10 mW (typ) into 50
2
a loudspeaker during on-hook dialling. The TEA1083/83A
is intended for use in conjunction with a transmission
circuit of the TEA1060 family. The device uses a part of the
available line current via the internal supply circuit.
The loudspeaker amplifier, which consists of a preamplifier
and a power amplifier, amplifies the received line signals
from the transmission circuit when enabled via the LSE
input. The loudspeaker amplifier can also be used to
amplify dialling tones from the dialler IC. The power
amplifier contains a push-pull output stage to drive the
loudspeaker in a Single Ended Load (SEL) configuration.
The internal voltage stabilizer can be used to supply
external devices. By activating the power-down (PD) input
of the TEA1083A, the current consumption of the circuit
will be reduced, this enables pulse dialling or flash (register
recall).
An internal start circuit ensures normal start-up of the
transmission IC.
CONDITIONS
PACKAGE
MATERIAL
PLASTIC
PLASTIC
PLASTIC
TEA1083; TEA1083A
3.0
MIN.
25
2.95
50
35
10
Product specification
TYP.
SOT162AG
SOT97D
SOT38
CODE
120
MAX.
75
(2)
(1)
(3)
mA
V
dB
mA
UNIT
C
A