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Part Number: ML7021
Description: The ML7021 is an improved version of the MSM7602 with the reduced cancelable echo delay time and addit...
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ML7021
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General Description
ML7021 General 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.
ML7021 Maximum Ratings
|
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 |
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
• Package: 28-pin plastic SSOP (SSOP28-P-485-0.65-K) (Product name : ML7021MB)
• 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)
ML7021 Connection Diagram
ML7021
PDF/DataSheet Download
- Datasheet: ML7021
- File Size: 250562 KB
- Manufacturer: OKI [OKI electronic componets]
- Click here to Download
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