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U4037B-N

Features: DC characteristic adjustable Receive gain adjustable Symmetrical input of microphone amplifier Anti-clipping in transmit direction Automatic line-loss compensation Symmetrical output of earpiece amplifier Built-in ear protection DTMF and MUTE input Adjustable sidetone suppression indepe...

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SeekIC No. : 004534843 Detail

U4037B-N: Features: DC characteristic adjustable Receive gain adjustable Symmetrical input of microphone amplifier Anti-clipping in transmit direction Automatic line-loss compensation Symmetrical output of e...

U4037B-N Data Sheet

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Part Number:
U4037B-N
Supply Ability:
5000

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  • Qty
  • 1~5000
  • Unit Price
  • Negotiable
  • Processing time
  • 15 Days
Total Cost: $ 0.00

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Product Details

Description



Features:

DC characteristic adjustable
Receive gain adjustable
Symmetrical input of microphone amplifier
Anti-clipping in transmit direction
Automatic line-loss compensation
Symmetrical output of earpiece amplifier
Built-in ear protection
DTMF and MUTE input
Adjustable sidetone suppression independentof sending and receiving amplification
Power down
Tone-ringer interface
2-bit D/A for volume control
Supply voltages for all functional blocks of asubscriber set
Operation possible from 8-mA line currents


Application

Telephone sets


Pinout

Connection Diagram


Specifications

Parameter

Symbol

Value

Unit

Line current

IL

140

mA

DC line voltage

VL

12

V

Maximum input current

IRING

15

mA

Junction temperature

Tj

125

°C

Ambient temperature

Tamb

25 to +75

°C

Storage temperature

Tstg

55 to +150

°C

Total power dissipation, Tamb = 60°C

Ptot

520

W




Description

The µC-controlled  telephone circuit U4037B-N is a lin-ear integrated circuit for use in telephone sets. It containsthe speech circuit, tone-ringer interface, sidetone equiva-lent and ear-protection rectifiers. The U4037B-N is linepowered and contains all components necessary foramplification of signals and adaptation to the line.




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