(1 PC) U4056B1 TEMIC Low-voltage Electronic Speech circuit with Dialer Interface
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THIS LISTING IS FOR (1 PC) OF U4056B1 BY TEMIC TELEFUNKEN
Low-voltage Electronic Speech circuit with Dialer Interface
Description
The electronic speech circuit, U4056B1, is a linear integrated
circuit for use in telephones 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 an
earphone. It contains all components necessary for amplification
of signals and adaption to the line.
Features
The microphone hybrid transformer is replaced by an
electronic circuit
Asymmetrical input for electret microphone
High performance through the use of dynamic
transducers as the earphone (non-linear distortion
)
Optional automatic equalization of sending and
receiving reference equivalent up to 5 km subscriber
line length
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
High life expectancy due to reduced power
consumption on the chip
Benefits
Operation possible from 5 mA
Low-voltage Electronic Speech circuit with Dialer Interface
Description
The electronic speech circuit, U4056B1, is a linear integrated
circuit for use in telephones 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 an
earphone. It contains all components necessary for amplification
of signals and adaption to the line.
Features
The microphone hybrid transformer is replaced by an
electronic circuit
Asymmetrical input for electret microphone
High performance through the use of dynamic
transducers as the earphone (non-linear distortion
)
Optional automatic equalization of sending and
receiving reference equivalent up to 5 km subscriber
line length
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
High life expectancy due to reduced power
consumption on the chip
Benefits
Operation possible from 5 mA
