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PCD4440T

Features: · Scrambler or descrambler function· Scrambling in frequency domain· Selectable split frequency (up to 10 selections per second)· Telephony-band filtering included· No increase in bandwidth· No external components required· Small signal delay· Insensitive to distortion and group delay of...

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SeekIC No. : 004456366 Detail

PCD4440T: Features: · Scrambler or descrambler function· Scrambling in frequency domain· Selectable split frequency (up to 10 selections per second)· Telephony-band filtering included· No increase in bandwidt...

PCD4440T Data Sheet

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Part Number:
PCD4440T
Supply Ability:
5000

Price Break

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

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Upload time: 2024/11/25

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Product Details

Description



Features:

· Scrambler or descrambler function
· Scrambling in frequency domain
· Selectable split frequency (up to 10 selections per second)
· Telephony-band filtering included
· No increase in bandwidth
· No external components required
· Small signal delay
· Insensitive to distortion and group delay of transmission channel
· Control via serial I2C-bus
· Low transfer loss of speech
· Mute option
· Transparent mode
· High signal input impedance
· Low signal output impedance
· Low power consumption.


Application

· Cordless telephones
· Security telephones
· Portable phones
· Private Mobile Radio (PMR).


Pinout

Connection Diagram


Description

The PCD4440T is a silicon gate CMOS integrated circuit intended to be used in cordless telephony, radio, and line telecommunications products utilizing a microcontroller for the control functions. The purpose of PCD4440T is to prevent unauthorized 'listening-in' on conversations. A major application is protection of the vulnerable radio link between a CT0 type cordless handset and PCD4440T base unit. Analog scrambling/descrambling is based on the split frequency method realized in a sophisticated switched-capacitor technology. The PCD4440T is compatible with most microcontrollers and communicates via a two line bidirectional I2C-bus.




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