products > product profiles > ZL50235
ZL50235 16 Channel Voice Echo Canceller
| Product Status - Production |
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The ZL50235 Voice Echo Canceller implements a cost effective solution for telephony voice-band echo cancellation conforming to ITU-T G.168 requirements. The ZL50235 architecture contains 8 groups of two echo cancellers (ECA and ECB) which can be configured to provide two channels of 64 milliseconds or one channel of 128 milliseconds echo cancellation. This provides 16 channels of 64 milliseconds to 8 channels of 128 milliseconds echo cancellation or any combination of the two configurations. The ZL50235 supports ITU-T G.165 and G.164 tone disable requirements.
Features
- Independent multiple channels of echo cancellation; from 16 channels of 64 ms to 8 channels of 128 ms with the ability to mix channels at 128 ms or 64 ms in any combination
- Independent Power Down mode for each group of 2 channels for power management
- Fully compliant to ITU-T G.165, G.168 (2000) and (2002) specifications
- Passed all AT&T voice quality tests for carrier grade echo canceller
- Compatible to ST-BUS and GCI interface at 2 Mbps serial PCM
- PCM coding, µ/A-Law ITU-T G.711 or sign magnitude
- Per channel Fax/Modem G.164 2100 Hz or G.165 2100 Hz phase reversal Tone Disable
- Per channel echo canceller parameters control
- Transparent data transfer and mute
- Fast reconvergence on echo path changes
- Fully programmable convergence speeds
- Patented Advanced Non-Linear Processor with high quality subjective performance
- Protection against narrow band signal divergence and instability in high echo environments
- Pin for Pin compatible with the 4, 8 and 32 channel devices
Typical Applications
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Wireless Local Loop base stations and controllers
- Voice telephony gateways
- Digital, IP based and wireless PBX systems
- Echo Canceller pools
- Customer Premise equipment
- Integrated access devices and SOHO gateways.
Product Information
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Models
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Product Availability and Packaging
| Ordering Part No. |
Package Type |
No. of Pins |
Lead-free Option |
Shipping Option |
Lead Time (Weeks) |
Status |
 |
| ZL50235/GDC |
LBGA |
208 |
|
Trays |
CONTACT ZARLINK |
Production |
| ZL50235QCG1 |
LQFP |
100 |
Pb-free-Matte Tin |
Trays. Bake & Drypack |
6-8 weeks |
Production |
| ZL50235/QCC |
LQFP |
100 |
|
Trays |
26 Week(s) |
Production |
Product Lead-Times when quoted are not guaranteed and are provided as a
general guideline only; they may be varied from time to time without
notice. Updated estimates or actual schedule commit dates will be provided
at the time of order placement with Zarlink or its distributor.
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Related Products
| Part Number | Description |
|
 ZL38065 |
32 Channel Voice Echo Canceller with Advanced Noise Matching |
| ZL50232 |
32 Channel Voice Echo Canceller |
| ZL50233 |
4 Channel Voice Echo Canceller |
| ZL50234 |
8 Channel Voice Echo Canceller |
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Product Positioning
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| Copyright 2008, Zarlink Semiconductor Inc. All Rights Reserved. |
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ZL50235 16 Channel Voice Echo Canceller
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