TEA1067/C2 Philips Semiconductors (Acquired by NXP), TEA1067/C2 Datasheet - Page 2

• Manufacturer Part Number: TEA1067/C2
• Description: TEA1067; Low Voltage Versatile Telephone Transmission Circuit With Dialler Interface;; Package: SOT102-1 (DIP18), SOT163 (SO20)
• Manufacturer: Philips Semiconductors (Acquired by NXP)

Philips Semiconductors
GENERAL DESCRIPTION
The TEA1067 is a bipolar integrated circuit performing all
speech and line interface functions required in fully
electronic telephone sets. It performs electronic switching
between dialling and speech. The circuit is able to operate
down to a DC line voltage of 1.6 V (with reduced
performance) to facilitate the use of more telephone sets
in parallel.
Features
QUICK REFERENCE DATA
PACKAGE OUTLINES
June 1990
Line voltage
Line current operating range
Internal supply current
Supply voltage for peripherals
Voltage gain range
Line loss compensation
Exchange supply voltage range
Exchange feeding bridge
TEA1067: 18-lead DIL; plastic (SOT102). SOT102-1; 1998 Jun 18.
TEA1067T: 20-lead mini-pack; plastic (SO20; SOT163A). SOT163-1; 1998 Jun 18.
Low DC line voltage; operates down to 1.6 V (excluding
polarity guard)
Voltage regulator with adjustable static resistance
Provides supply with limited current for external circuitry
Symmetrical high-impedance inputs (64 k ) for
dynamic, magnetic or piezoelectric microphones
Low voltage versatile telephone
transmission circuit with dialler interface
microphone amplifier
receiving amplifier
gain control range
resistance range
PARAMETER
I
normal operation
power down
input LOW
input HIGH
I
mute input HIGH
I
mute input HIGH
line
line
line
TEA1067
TEA1067T
with reduced performance
= 15 mA
= 15 mA; I
= 15 mA; I
CONDITIONS
p
p
= 1.4 mA;
= 0.9 mA;
2
Asymmetrical high-impedance input (32 k ) for electret
microphone
DTMF signal input with confidence tone
Mute input for pulse or DTMF dialling
Power down input for pulse dial or register recall
Receiving amplifier for magnetic, dynamic or
piezoelectric earpieces
Large gain setting range on microphone and earpiece
amplifiers
Line current dependent line loss compensation facility
for microphone and earpiece amplifiers
Gain control adaptable to exchange supply
DC line voltage adjustment capability
V
I
I
I
I
I
V
V
G
G
V
R
line
line
line
CC
CC
G
LN
CC
CC
exch
exch
v
v
SYMBOL
v
3.65
11
11
1
2.2
2.5
44
20
5.5
36
0.4
MIN.
3.9
1
55
2.4
5.9
TYP.
Product specification
TEA1067
4.15
140
140
11
1.35
82
52
45
6.3
60
1
MAX.
V
mA
mA
mA
mA
V
V
dB
dB
dB
V
k
UNIT
A