TEA1068T Philips Semiconductors, TEA1068T Datasheet - Page 2

• Manufacturer Part Number: TEA1068T
• Description: Versatile telephone transmission circuit with dialler interface
• Manufacturer: Philips Semiconductors

Philips Semiconductors
FEATURES
QUICK REFERENCE DATA
ORDERING INFORMATION
1996 Apr 23
V
I
I
V
G
V
R
T
TEA1068
TEA1068T
line
CC
NUMBER
SYMBOL
G
amb
Voltage regulator with adjustable static resistance
Provides supply for external circuitry
Symmetrical high-impedance inputs (64 k ) for
dynamic, magnetic or piezoelectric microphones
Asymmetrical high-impedance input (32 k ) for electret
microphone
Dual-Tone Multi-Frequency (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
LN
CC
exch
exch
Versatile telephone transmission circuit
with dialler interface
v
TYPE
v
line voltage
line current
internal supply current
supply voltage for peripherals
voltage gain
line loss compensation gain control range
exchange supply voltage
exchange feeding bridge resistance range
ambient operating temperature
TEA1068
TEA1068T
microphone amplifier
receiving amplifier
NAME
DIP18
SO20
PARAMETER
plastic dual in-line package; 18 leads (300 mil)
plastic small outline package; 20 leads; body width 7.5 mm
DESCRIPTION
I
normal operation
normal operation
power down; input LOW
power down; input HIGH
I
MUTE = HIGH
2
line
line
PACKAGE
I
I
GENERAL DESCRIPTION
The TEA1068 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.
p
p
= 15 mA
= 15 mA;
= 1.2 mA
= 1.7 mA
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 facility.
CONDITIONS
4.2
10
10
2.8
2.5
44
17
5.5
24
0.4
MIN.
25
4.45
0.96
55
3.05
5.9
Product specification
TYP.
SOT102-1
SOT163-1
TEA1068
VERSION
4.7
140
100
1.3
82
60
39
6.3
60
1
+75
MAX.
V
mA
mA
mA
V
V
dB
dB
dB
V
k
UNIT
C
A