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參數資料
| 型號： | U4055B |
| 英文描述： | Low-Voltage Electronic Speech Circuit with Dialer Interface |
| 中文描述： | 低壓電路的電子語音撥號接口 |
| 文件頁數： | 1/10頁 |
| 文件大小： | 150K |
| 代理商： | U4055B |
U4055B/U4055B1
Preliminary Information
TELEFUNKEN Semiconductors
Rev. A1, 06-May-96
1 (10)
Low-Voltage Electronic Speech Circuit with Dialer Interface
Description
The U4055B electronic speech circuit is a linear
integrated circuit for use in telephone and other line fed
terminal equipment. It replaces the common speech
circuit with carbon microphone, hybrid transformer,
sidetone equivalent and ear protection rectifiers. A
low-cost electrodynamic transducer is used as the
earphone. It contains all components necessary for
amplification of signals and adaption to the line.
Features
An electronic circuit replaces the microphone hybrid
transformer
Symmetrical input for dynamic or piezo microphone
High performance through the use of dynamic
transducers as the earphone (non-linear distortion
2%)
Automatic line loss compensation
DTMF interface with muting
Supply voltage for dialer
High range of line feeding current
Input resistance independent of line current and
sidetone suppression circuit.
Built-in ear protection by earphone voltage limiter
Operation possible from 8 mA
U4055B1
: High level mute;
U4055B
: Low level mute
Figure 1. Block diagram and pin connection
相關PDF資料 |
PDF描述 |
|---|---|
| U4055B1 | Low-Voltage Electronic Speech Circuit with Dialer Interface |
| U4070B-FP | Tone Ringer Interface |
| U4074B | Tone Ringer Interface |
| U4076B | Three-Tone Ringer for Telephone Sets |
| U4076B-FL | Three-Tone Ringer for Telephone Sets |
相關代理商/技術參數 |
參數描述 |
|---|---|
| U4055B1 | 制造商:TEMIC 制造商全稱:TEMIC Semiconductors 功能描述:Low-Voltage Electronic Speech Circuit with Dialer Interface |
| U4056B | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:TELEFUNK ELECTRONIC CREATIVE TECHNOLOGIEN U2200B-FP |
| U4058B | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:TELEFUNK ELECTRONIC CREATIVE TECHNOLOGIEN U2200B-FP |
| U406 | 功能描述:JFET Dual Matched RoHS:否 制造商:ON Semiconductor 晶體管極性:N-Channel 漏極電流（Vgs=0 時的 Idss）:50 mA 漏源電壓 VDS:15 V 閘/源擊穿電壓: 漏極連續電流:50 mA 配置: 安裝風格: 封裝 / 箱體:SC-59 封裝:Reel |
| U406_TO-71 | 制造商:MICROSS 制造商全稱:MICROSS 功能描述:Low Noise, Low Drift, Monolithic Dual N-Channel JFET |
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