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ML7021

Features: • Tone disable function• Cancelable echo delay time: For a single chip: 8 ms (max.)• Echo attenuation : 30 dB (typ.)• Clock frequency : 19.2 MHz External input and internal oscillator circuit are provided.• Power supply voltage : 2.7 V to 5.5 V• Packag...

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SeekIC No. : 004422235 Detail

ML7021: Features: • Tone disable function• Cancelable echo delay time: For a single chip: 8 ms (max.)• Echo attenuation : 30 dB (typ.)• Clock frequency : 19.2 MHz External input and ...

ML7021 Data Sheet

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Part Number:
ML7021
Supply Ability:
5000

Price Break

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

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Product Details

Description



Features:

• Tone disable function
• Cancelable echo delay time: For a single chip: 8 ms (max.)
• Echo attenuation : 30 dB (typ.)
• Clock frequency : 19.2 MHz External input and internal oscillator circuit are provided.
• Power supply voltage : 2.7 V to 5.5 V
• Package: 28-pin plastic SSOP (SSOP28-P-485-0.65-K) (Product name : ML7021MB)


Pinout

Connection Diagram


Specifications

Parameter
 Symbol
Condition
Rating
Units
Power Supply Voltage
VDD
Ta = 25
0.3 to +7
V
Input Voltage
VIN
0.3 to VDD + 0.3
V
Power Dissipation
PD
1
W
Storage Temperature
TSTG
-
55 to +150

 




Description

The ML7021 is an improved version of the MSM7602 with the reduced cancelable echo delay time and additional 2100Hz tone detection function.

The ML7021 is a low-power CMOS device for canceling echo (in an acoustic system or telephone line) generated in a speech path.

Echo is canceled, in digital signal processing, by estimating the echo path and generating a pseudo echo signal.

The ML7021 makes possible a quality conversation by controlling the noise level and preventing howling with howling detector, double talk detector, attenuation function, and a gain control function. The devise also controls the low level noise with a center clipping function.

Further, the ML7021 I/O interface supports m-law PCM . The use of a single chip CODEC, such as the MSM7566/7704 (3 V) or MSM7543/7533 (5 V), allows a simplified and efficient echo canceler configuration.




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