Optimum solution for hands-free call through portable device and intercom.

• Echo canceller


Part Name

Description

ML7202-001

Dual echo canceller (64ms x 2ch, μ/A-law I/F)＋ ADPCM Transcoder

• Echo canceller/noise canceller


Part Name

Description

ML7037-003

Dual echo canceller / noise canceller with dual codec

Specification
• Echo canceller


Part Name

Package

Cancelable
Echo
Delay Time

Voice
Signal
Interface

Power
Supply
(V)

Operating
Frequency

Notes

ML7202-001

64TQFP

64ms/channel

μ-law, A-law

3.0 to 3.6

19.2MHz

Tone Gen/Det., VOX, Gain Control,
Time Slot Assignment, etc.

• Echo canceller/noise canceller


Part Name

Feature

Package

Cancelable
Echo
Delay Time

Voice
Signal
Interface

Power
Supply
(V)

Operating
Frequency

Notes

ML7037-003

Dual echo canceller /
noise canceller with
dual codec

64TQFP

Acoustic
side 64ms,
Line side
20ms

Acoustic side: analog
Line side :
analog,16-bit linear,
μ-law analog

3.0 to 3.6

12.288MHz

Noise
cancellation
= 6 to 18dB(Typ.)

Application

  • Hands-free kit and speaker phone
    • Sound echo cancel function
  • Office telephone exchange and terminal adaptor
    • Line echo cancel function that returns in 2/4 line conversion hybrid circuit