U4070B-FP TEMIC Semiconductors, U4070B-FP Datasheet

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U4070B-FP

Manufacturer Part Number
U4070B-FP
Description
Tone Ringer Interface
Manufacturer
TEMIC Semiconductors
Datasheet
1.U4070B-FP.pdf (6 pages)
TELEFUNKEN Semiconductors
Rev. A1, 06-May-96
Tone Ringer Interface
Description
The U4074B is a monolithic integrated circuit that
contains all integral components of a ringing circuit for
telephone sets used in conjunction with a microcomputer.
The combination of a microcomputer and the U4074B
permits flexible programming of the ringing sequence
( melody), tone and volume control.
Features
D
D
D
D
D
D
D
Ringing signal
Suitable for specifications FTZ 1TR2 and ETR 2
Rectifier bridge
Z-diode
Amplitude detection
Supply voltage for microcomputer 3.5 @
DC operation possible
Bridge push-pull output stage
93 7793 e
a
b
0.8 F
m
2.2 k
(16)14
W
(1)1
Figure 1. Block diagram and application circuit ( pin connections for SO16 in brackets )
b
a
(15)13 GND 5(6)
V B
Preliminary Information
2(3)
A1
22 F
m
Control
Volume
v
DA converter
Decoder and
1.5 mA
6(7) (9)7 Mel
A0
V Ref
Ringing frequency detection takes place in the
microcomputer. The U4074B is responsible for the
interface to the line, driver stages for the piezoelectric
sound
detection, voltage supply for the microcomputer and
other auxiliary functions.
D
D
D
Benefits
D
D
CMOS-compatible microcomputer interface
2-bit log. volume adjustment
High-voltage bipolar technology, 30 V
m
Low number of external components
C controlled melody and volume
TH
transducer,
3(4)
47 F
m
V DD
2f
V
On/Off
DC
10 (12)
volume
8(10)
130 k
W
2f
adjustment,
4(5)
U4074B
+V B
+V B
9(11)
O 2
O 1
12(14)
11(13)
amplitude
PIEZO
Transducer
1 (6)

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U4070B-FP Summary of contents

Page 1

Tone Ringer Interface Description The U4074B is a monolithic integrated circuit that contains all integral components of a ringing circuit for telephone sets used in conjunction with a microcomputer. The combination of a microcomputer and the U4074B permits flexible programming ...

Page 2

U4074B Pin Configuration 7904 e Pin Symbol Function ringing signal input ...

Page 3

Outputs Pin 11 The bridge push-pull outputs are used for direct connection of a piezo electric sound transducer with a typical value of 80 nF. The output stage transistors can process ...

Page 4

U4074B Absolute Maximum Ratings Reference point, Pin unless otherwise specified, T Parameters Supply current Pin Output current Pin 11 13,14 ) Junction Temperature Ambient temperature Storage temperature Power ...

Page 5

... Order Information Extended Type Number U4070B-FP U4074B Dimensions in mm Package: DIP14 Package: SO16 TELEFUNKEN Semiconductors Rev. A1, 06-May-96 Preliminary Information Package SO16 DIP14 U4074B Remarks 5 (6) ...

Page 6

U4074B 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 ...

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