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U4055BのメーカーはTEMIC Semiconductorsです、この部品の機能は「Low-Voltage Electronic Speech Circuit」です。 |
部品番号 | U4055B |
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部品説明 | Low-Voltage Electronic Speech Circuit | ||
メーカ | TEMIC Semiconductors | ||
ロゴ | |||
このページの下部にプレビューとU4055Bダウンロード(pdfファイル)リンクがあります。 Total 10 pages
U4055B/U4055B1
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
www.DataSheet4U.cDomAn electronic circuit replaces the microphone hybrid
transformer
D Symmetrical input for dynamic or piezo microphone
D High performance through the use of dynamic
transducers as the earphone (non-linear distortion
x 2%)
D Automatic line loss compensation
D DTMF interface with muting
D Supply voltage for dialer
D High range of line feeding current
D Input resistance independent of line current and
sidetone suppression circuit.
D Built-in ear protection by earphone voltage limiter
D Operation possible from 8 mA
U4055B1: High level mute; U4055B: Low level mute
Figure 1. Block diagram and pin connection
TELEFUNKEN Semiconductors
Rev. A1, 06-May-96
Preliminary Information
1 (10)
1 Page Pin Connection
www.DataSheet4U.com
U4055B/U4055B1
Figure 2.
Absolute Maximum Ratings
Reference point Pin 3, unless otherwise specified.
Parameters
Line current
DC line voltage, tp = 3 ms
Power dissipation, IL = 100 mA
Junction temperature
Ambient temperature range
Storage temperature range
Pin 13
Symbol
IL
VL
Ptot
Tj
Tamb
Tstg
Thermal Resistance
Junction ambient
Parameters
Symbol
RthJA
Value
200
20
560
150
–28 to + 80
–55 to +150
Value
85
Unit
mA
V
mW
°C
°C
°C
Unit
K/W
TELEFUNKEN Semiconductors
Rev. A1, 06-May-96
Preliminary Information
3 (10)
3Pages U4055B/U4055B1
www.DataSheet4U.com
6 (10)
Figure 4. Line and supply voltage characteristics
TELEFUNKEN Semiconductors
Preliminary Information
Rev. A1, 06-May-96
6 Page | |||
ページ | 合計 : 10 ページ | ||
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PDF ダウンロード | [ U4055B データシート.PDF ] |
データシートを活用すると、その部品の主な機能と仕様を詳しく理解できます。 ピン構成、電気的特性、動作パラメータ、性能を確認してください。 |
部品番号 | 部品説明 | メーカ |
U4055B | Low-Voltage Electronic Speech Circuit | TEMIC Semiconductors |
U4055B1 | Low-Voltage Electronic Speech Circuit | TEMIC Semiconductors |