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TELEFUNKEN Semiconductors

U4078B

Tone Ringer Interface with DC/DC Converter

Description

The tone ringer interface with dc/dc converter U4078B is

an integrated circuit realized in bipolar technology, which

allows high efficient power transfer. Galvanic separation

takes place at Pin 5 either with inductive or opto-coupler

mode.

Features

D

Suitable for the specification:

FTZ, 1TR2 and ETR2

Benefits

D

High efficient power transfer

D

D

D

D

Rectifier bridge

Z-diode

Amplitude detection

Detection of ringing signal i.e.,

sine-, triangle-, or rectangular (tone ringing) signal

D

High-voltage bipolar technology

D

Compact surface mount package (SO8)

22

m

F

1.5 k

W

V

B

1

2

Hysteresis and

power supply

8

7

GND

3

TH

47 pF

92 7460 e

output



b

1

a

a

b

38 kHz

Pulse 5

shaping

ST

m

C supply

2f

m

F

6

OSC

180 k

W

4

MS

Figure 1. Block diagram with external circuit

14.04.94

1

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U4078B相關(guān)型號PDF文件下載

• 型號
  版本
  描述
  廠商
  下載
• U4071B
  英文版
  Telecommunication IC
  ETC
  U4071B
• U4071B
  英文版
  Telecommunication IC
  U4071B
• U4072B
  英文版
  Telecommunication IC
  ETC
  U4072B
• U4072B
  英文版
  Telecommunication IC
  U4072B
• U4074B
  英文版
  Tone Ringer Interface
  TEMIC
  U4074B
• U4074B
  英文版
  Tone Ringer Interface
  TEMIC [TEM...
  U4074B
• U4076B
  英文版
  Three-Tone Ringer for Telephone Sets
  TEMIC
  U4076B
• U4076B
  英文版
  Three-Tone Ringer for Telephone Sets
  TEMIC [TEM...
  U4076B
• U4077B
  英文版
  Telecommunication IC
  ETC
  U4077B
• U4077B
  英文版
  TELEFUNK ELECTRONIC CREATIVE TECHNOLOGIEN U2200B-FP
  ETC [ETC]
  U4077B
• U4078B
  英文版
  Tone Ringer Interface with DC/DC Converter
  TEMIC
  U4078B
• U4078B
  英文版
  Tone Ringer Interface with DC/DC Converter
  TEMIC [TEM...
  U4078B
• U4070B-FP
  英文版
  Tone Ringer Interface
  TEMIC
  U4070B-FP
• U4070B-FP
  英文版
  Tone Ringer Interface
  TEMIC [TEM...
  U4070B-FP
• U4074B-FP
  英文版
  暫無描述
  TEMIC
  U4074B-FP
• U4076B-FL
  英文版
  Three-Tone Ringer for Telephone Sets
  TEMIC
  U4076B-FL
• U4076B-FL
  英文版
  Three-Tone Ringer for Telephone Sets
  TEMIC [TEM...
  U4076B-FL

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