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PDF U4055B Data sheet ( Hoja de datos )
| Número de pieza | U4055B | |
| Descripción | Low-Voltage Electronic Speech Circuit | |
| Fabricantes | TEMIC Semiconductors | |
| Logotipo |  |
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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  
www.DataSheet4U.com
U4055B/U4055B1
Figure 3. Receiving amplifier
TELEFUNKEN Semiconductors
Rev. A1, 06-May-96
Preliminary Information
5 (10)
5 Page | ||
| Páginas | Total 10 Páginas | |
| PDF Descargar | [ Datasheet U4055B.PDF ] | |
Hoja de datos destacado
| Número de pieza | Descripción | Fabricantes |
| U4055B | Low-Voltage Electronic Speech Circuit | TEMIC Semiconductors |
| U4055B1 | Low-Voltage Electronic Speech Circuit | TEMIC Semiconductors |
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