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TEA1067 Datenblatt(PDF) 2 Page - NXP Semiconductors

Teilenummer TEA1067
Bauteilbeschribung  Low voltage versatile telephone transmission circuit with dialler interface
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Hersteller  PHILIPS [NXP Semiconductors]
Direct Link  http://www.nxp.com
Logo PHILIPS - NXP Semiconductors

TEA1067 Datenblatt(HTML) 2 Page - NXP Semiconductors

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June 1990
2
Philips Semiconductors
Product specification
Low voltage versatile telephone
transmission circuit with dialler interface
TEA1067
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
• 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 kΩ) for
dynamic, magnetic or piezoelectric microphones
• Asymmetrical high-impedance input (32 kΩ) 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
QUICK REFERENCE DATA
PACKAGE OUTLINES
PARAMETER
CONDITIONS
SYMBOL
MIN.
TYP.
MAX.
UNIT
Line voltage
Iline = 15 mA
VLN
3.65
3.9
4.15
V
Line current operating range
normal operation
TEA1067
Iline
11
140
mA
TEA1067T
Iline
11
140
mA
with reduced performance
Iline
1
11
mA
Internal supply current
power down
input LOW
ICC
1
1.35
mA
input HIGH
ICC
55
82
µA
Supply voltage for peripherals
Iline = 15 mA; Ip = 1.4 mA;
mute input HIGH
VCC
2.2
2.4
V
Iline = 15 mA; Ip = 0.9 mA;
mute input HIGH
VCC
2.5
−−
V
Voltage gain range
microphone amplifier
Gv
44
52
dB
receiving amplifier
Gv
20
45
dB
Line loss compensation
gain control range
∆G
v
5.5
5.9
6.3
dB
Exchange supply voltage range
Vexch
36
60
V
Exchange feeding bridge
resistance range
Rexch
0.4
1k
TEA1067: 18-lead DIL; plastic (SOT102). SOT102-1; 1998 Jun 18.
TEA1067T: 20-lead mini-pack; plastic (SO20; SOT163A). SOT163-1; 1998 Jun 18.


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