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參數(shù)資料
| 型號： | U4070B-FP |
| 英文描述： | Tone Ringer Interface |
| 中文描述： | 音鈴聲接口 |
| 文件頁數(shù)： | 1/6頁 |
| 文件大小： | 99K |
| 代理商： | U4070B-FP |
U4074B
Preliminary Information
TELEFUNKEN Semiconductors
Rev. A1, 06-May-96
1 (6)
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.
Ringing frequency detection takes place in the
microcomputer. The U4074B is responsible for the
interface to the line, driver stages for the piezoelectric
sound transducer, volume adjustment, amplitude
detection, voltage supply for the microcomputer and
other auxiliary functions.
Features
Suitable for specifications FTZ 1TR2 and ETR 2
Rectifier bridge
Z-diode
Amplitude detection
Supply voltage for microcomputer 3.5 @
1.5 mA
DC operation possible
Bridge push-pull output stage
CMOS-compatible microcomputer interface
2-bit log. volume adjustment
High-voltage bipolar technology, 30 V
Benefits
C controlled melody and volume
Low number of external components
Control
VRef
Decoder and
DA converter
TH
10 (12)
2f
3(4)
4(5)
VDD
130 k
47 F
22 F
2(3)
VB
(1)1
(16)14
+VB
+VB
12(14)
O2
11(13)
O1
PIEZO
Transducer
(15)13 GND 5(6)
6(7) (9)7 Mel
A1
A0
Volume
DC
V
8(10)
9(11)
0.8 F
2.2 k
a
b
Ringing signal
93 7793 e
On/Off
2f
a
b
Figure 1. Block diagram and application circuit (pin connections for SO16 in brackets)
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| U4074B | Tone Ringer Interface |
| U4076B | Three-Tone Ringer for Telephone Sets |
| U4076B-FL | Three-Tone Ringer for Telephone Sets |
| U4078B | Tone Ringer Interface with DC/DC Converter |
| U4080B | Voice-Switched Circuit for Handsfree Operation |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| U4071B | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Telecommunication IC |
| U4072B | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Telecommunication IC |
| U4074B | 制造商:TEMIC 制造商全稱:TEMIC Semiconductors 功能描述:Tone Ringer Interface |
| U4076B | 制造商:TEMIC 制造商全稱:TEMIC Semiconductors 功能描述:Three-Tone Ringer for Telephone Sets |
| U4076B-FL | 制造商:TEMIC 制造商全稱:TEMIC Semiconductors 功能描述:Three-Tone Ringer for Telephone Sets |
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