U4076B TEMIC Semiconductors, U4076B Datasheet

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U4076B

Manufacturer Part Number
U4076B
Description
Three-Tone Ringer for Telephone Sets
Manufacturer
TEMIC Semiconductors
Datasheet

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TELEFUNKEN Semiconductors
Rev. A1, 15-May-96
Three-Tone Ringer for Telephone Sets
Description
The three-tone ringing integrated circuit U4076B, in
conjunction with a piezo transducer or loudspeaker
replaces the normal electromechanical telephone bell. It
is operated with the ringing current from the exchange.
Features
D
D
D
D
D
D
D
Three-tone ringing sequence with 800 Hz, 1067 Hz
and 1333 Hz
Sequence frequency adjustable between 2.5 Hz and
25 Hz
Adjustable volume
Push-pull output stage
Piezo transducer or loudspeaker connection
Common input for frequency and call recognition
Reduced pulse duration for electromagnetic
transducers
~ ~
a
b
0.8 F
m
R L
2.2 k
W
(16)
(8)
(6)
14
(1)
7
5
1
4
Case: DIP14 or SO16-L (Pin connections for SO 16-L case in bracket)
Frequency
Three
state
(5)
22 F
m
6
(7)
Preliminary Information
Figure 1. Block diagram and application circuit
monitoring
Frequency
Supply
Level
monitoring
10 (11)
600 k
Reset
b
W
127 ms
Tone sequence
oscillator
43 k
96 ms
There is also a possibility of operating the IC with the dc
supply voltage, being developed for large operating
range. The integrated circuit is overload protected.
D
D
D
D
Benefit
D
W
8
(9)
Clock oscillator with ceramic resonator or LC series
cct possible
Input protective diode
On-chip rectifier bridge
Protection circuit against ringing in a parallel circuit
Suitable for German Post Office Specification,
FTZ 121671 Pfl. 3, edition dated 24.03.82
Divider
Divider
128:1
32:1
4.7 nF
9
Divider
(10)
32:1
Reset
a
Divider
2:1
Divider
(15) 13
14:1
Tone signal
generator
Ground: output signal
Open: output signal
Clock signal
generator
93 7792 e
U4076B
(13)
(12)
12
11
2 (2)
3 (3)
100 k
455 kHz
log
W
1 (6)

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U4076B Summary of contents

Page 1

... Three-Tone Ringer for Telephone Sets Description The three-tone ringing integrated circuit U4076B, in conjunction with a piezo transducer or loudspeaker replaces the normal electromechanical telephone bell operated with the ringing current from the exchange. Features D Three-tone ringing sequence with 800 Hz, 1067 Hz and 1333 Hz D Sequence frequency adjustable between 2 ...

Page 2

... U4076B Pin Description Pin Symbol Function 1 (1) Frequency monitoring Open Ground With Pin 6 (7) connected: Switched off 2, 3 Clock signal generator ( (5) Ground 5, 7 Power supply ( (7) Charging capacitor, C bridge rectifier (8, 9, Frequency oscillator 10) ...

Page 3

... Figure 2. Surge voltage test circuit Symbol Pins 5 and 7 ( " amb T stg P tot P tot Symbol R thJA R thJA U4076B = 7575 e Value Unit 125 C – – 125 C 860 mW 720 mW Value Unit ...

Page 4

... Internal voltage limitation V 6–4 (7– Repetition rate oscillator: Low state High state Allowable resistor Ordering Information Extended Type Number U4076B-FL U4076B 4 (6) Preliminary Information Symbol Min. Pins 5 and 7 (6) I 0.9 S Pins 5 and 7 ( ring Pin 6 (7) Pin 6 (7) 2 ...

Page 5

... Dimensions in mm Package: SO16-L Package: DIP14 TELEFUNKEN Semiconductors Rev. A1, 15-May-96 Preliminary Information U4076B 5 (6) ...

Page 6

... U4076B Ozone Depleting Substances Policy Statement It is the policy of TEMIC TELEFUNKEN microelectronic GmbH to 1. Meet all present and future national and international statutory requirements. 2. Regularly and continuously improve the performance of our products, processes, distribution and operating systems with respect to their impact on the health and safety of our employees and the public, as well as their impact on the environment ...

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