(China (Mainland))
Product Summary
The ZL50234QC is a Voice Echo Canceller. It contains four groups of two echo cancellers (ECA and ECB) which can be configured to provide 2 channels of 64 milliseconds or 1 channel of 128 milliseconds echo cancellation. This provides 8 channels of 64 milliseconds to 4 channels of 128 milliseconds echo cancellation or any combination of the two configurations.
Parametrics
Absolute maximum ratings: (1)I/O Supply Voltage (VDD1):-0.5V to 5.0V; (2)Core Supply Voltage (VDD2):-0.5V to 2.5V; (3)Input Voltage:VSS-0.5V to VDD1+0.5V; (4)Input Voltage on any 5 V Tolerant I/O pins:VSS-0.3V to 7.0V; (5)Continuous Current at digital outputs:20 mA; (6)Package power dissipation:2W; (7)Storage temperature:-55℃ to 150℃.
Features
Features: (1)Protection against narrow band signal divergence and instability in high echo environments; (2)+9 dB to -12 dB level adjusters (3 dB steps) at all signal ports; (3)Offset nulling of all PCM channels; (4)10 MHz or 20 MHz master clock operation; (5)3.3 V I/O pads and 1.8 V Logic core operation with 5 V tolerant inputs; (6)IEEE-1149.1 (JTAG) Test Access Port; (7)Per channel echo canceller parameters control; (8)Transparent data transfer and mute; (9)Fast reconvergence on echo path changes; (10)Fully programmable convergence speeds; (11)Patented Advanced Non-Linear Processor with high quality subjective performance.
Diagrams
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