ZL38001
AEC for Analog Hands-Free Communication
Overview
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This product is not recommended for new design. Please use Timberwolf™ audio processor for new design. |
Simplified Block Diagram
Typical Applications
- Handsfree in automobile applications
Features & Benefits
- Contains two echo cancellers: 112 ms acoustic echo canceller + 16 ms line echo canceller
- Works with low cost voice codec (ITU-T G.711 or signed mag µ/A-Law, or linear 2's comp)
- Advanced Non-Linear Processor design - Full duplex speech with no switched loss on audio paths
- Fast re-convergence time: tracks changing echo environment quickly
- Adaptation algorithm converges even during Double-Talk
- Designed for exceptional performance in high background noise environments
- Provides protection against narrow-band signal divergence
- Howling prevention stops uncontrolled oscillation in high loop gain conditions
- Handles up to 0 dB acoustic echo return loss
- User gain control for speaker path (-24 dB to +48 dB)
- 18 dB gain to compensate for High ERL environments
- Offset nulling of all PCM channels
- Serial micro-controller interface
- ST-BUS, GCI, or variable-rate SSI PCM interfaces
- 20 MHz master clock operation
- Low power mode during PCM Bypass
- 2.7 V to 3.6 V supply voltage; 5 V-tolerant inputs
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