transmission. TEA1062AT Datasheet

TEA1062AT Datasheet PDF


Part TEA1062AT
Description Low voltage transmission
Feature INTEGRATED CIRCUITS DATA SHEET TEA1062; TEA1062A Low voltage transmission circuits with dialler in.
Manufacture NXP
Datasheet
Download TEA1062AT Datasheet


INTEGRATED CIRCUITS DATA SHEET TEA1062; TEA1062A Low volta TEA1062AT Datasheet




TEA1062AT
INTEGRATED CIRCUITS
DATA SHEET
TEA1062; TEA1062A
Low voltage transmission circuits
with dialler interface
Product specification
Supersedes data of 1996 Dec 04
File under Integrated Circuits, IC03
1997 Sep 03



TEA1062AT
Philips Semiconductors
Low voltage transmission circuits with
dialler interface
Product specification
TEA1062; TEA1062A
FEATURES
Low DC line voltage; operates down to 1.6 V (excluding
polarity guard)
Voltage regulator with adjustable static resistance
Provides a supply for external circuits
Symmetrical high-impedance inputs (64 k) for
dynamic, magnetic or piezoelectric microphones
Asymmetrical high-impedance input (32 k) for electret
microphones
DTMF signal input with confidence tone
Mute input for pulse or DTMF dialling
– TEA1062: active HIGH (MUTE)
– TEA1062A: active LOW (MUTE)
Receiving amplifier for dynamic, magnetic or
piezoelectric earpieces
Large gain setting ranges on microphone and earpiece
amplifiers
Line loss compensation (line current dependent) for
microphone and earpiece amplifiers
Gain control curve adaptable to exchange supply
DC line voltage adjustment facility.
GENERAL DESCRIPTION
The TEA1062 and TEA1062A are integrated circuits that
perform all speech and line interface functions required in
fully electronic telephone sets. They perform electronic
switching between dialling and speech. The ICs operate at
line voltage down to 1.6 V DC (with reduced performance)
to facilitate the use of more telephone sets connected in
parallel.
All statements and values refer to all versions unless
otherwise specified.
QUICK REFERENCE DATA
SYMBOL
VLN
Iline
ICC
VCC
PARAMETER
line voltage
operating line current
normal operation
with reduced performance
internal supply current
supply voltage for peripherals
TEA1062
TEA1062A
Gv voltage gain
microphone amplifier
receiving amplifier
Tamb
operating ambient temperature
Line loss compensation
Gv
Vexch
Rexch
gain control
exchange supply voltage
exchange feeding bridge resistance
1997 Sep 03
CONDITIONS
Iline = 15 mA
MIN. TYP. MAX. UNIT
3.55 4.0 4.25 V
11
140 mA
1 11 mA
VCC = 2.8 V
0.9 1.35 mA
Iline = 15 mA
Ip = 1.2 mA; MUTE = HIGH 2.2 2.7
V
Ip = 0 mA; MUTE = HIGH
3.4
V
Ip = 1.2 mA; MUTE = LOW 2.2 2.7
V
Ip = 0 mA; MUTE = LOW
3.4
V
44
20
25
52 dB
31 dB
+75 °C
5.8
36
60
0.4
1
dB
V
k
2






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