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MT9123

Features: • Dual channel 64ms or single channel 128ms echo cancellation• Conforms to ITU-T G.165 requirements• Narrow-band signal detection• Programmable double-talk detection threshold• Non-linear processor with adaptive suppression threshold and comfort noise insert...

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SeekIC No. : 004430264 Detail

MT9123: Features: • Dual channel 64ms or single channel 128ms echo cancellation• Conforms to ITU-T G.165 requirements• Narrow-band signal detection• Programmable double-talk detectio...

MT9123 Data Sheet

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Part Number:
MT9123
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: 2024/11/26

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Product Details

Description



Features:

• Dual channel 64ms or single channel 128ms echo cancellation
• Conforms to ITU-T G.165 requirements
• Narrow-band signal detection
• Programmable double-talk detection threshold
• Non-linear processor with adaptive suppression threshold and comfort noise insertion
• Offset nulling of all PCM channels
• Controllerless mode or Controller mode with serial interface
• ST-BUS or variable-rate SSI PCM interfaces
• Selectable m/A-Law ITU-T G.711; m/A-Law Sign Mag; linear 2's complement
• Per channel selectable 12 dB attenuator
• Transparent data transfer and mute option
• 19.2 MHz master clock operation


Application

• Wireless Telephony
• Trunk echo cancellers


Pinout

Connection Diagram


Specifications

Parameter

Symbol

Min

Max

Units

1

Supply Voltage

VDD-VSS

- 0.3

7

V

2

Voltage on any digital pin

Vi/o

VSS-0.3

VDD + 0.3

V

3

Continuous Current on any digital pin

I i/o

±20

mA

4

Storage Temperature

TST

-65

150

5

Package Power Dissipation

PD

500

mW




Description

The MT9123 Voice Echo Canceller implements a cost effective solution for telephony voice-band echo cancellation conforming to ITU-T G.165 requirements. The MT9123 architecture contains two echo cancellers which can be configured to provide dual channel 64 millisecond echo cancellation or single channel 128 millisecond echo cancellation.

The MT9123 operates in two major modes: Controller or Controllerless. Controller mode allows access to an array of features for customizing the MT9123 operation. Controllerless mode is for applications where default register settings are sufficient.




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