Q1875

The Q1875 is designed as pragmatic trellis decoder which provides higher throughput data rates with improved bit error rate performance for power-limited and bandwidth-limited digital communication channels. Its typical applications include direct broadcast satellite, microwave point to point data links, bandwidth efficient digital communication systems and digital video transmission systems.

Q1875 has many features. The first one is trellis-coded modulation encoder / pramatic trellis-coded modulation decoder and convolutional encoder / viterbi decoder on one device. The next one is processor interface that simplifies control and status. The next one is backwards-compatible with the Q0256 and Q1650 viterbi decoders. The next one is 3.2dB coding gain (rate 2/3), 3.1dB coding gain (rate 3/4) at 10^-5 BER. The next one is automatic synchronization capability for pragmatic trellis-coded modulation decoder and viterbi decoder. The next one is data rates up to 60Mbps for rate 3/4. The next one is low power CMOS implementation. The next one is standard 84-pin LCC package. That are all the main features.

Some absolute maximum ratings of Q1875 have been concluded into several points as follow. The first one is about its storage temperature range which would be from -55°C to +85°C. The next one is about its operating temperature range which would be from 0°C to +70°C. The next one is about its junction temperature which would be max +160°C. The next one is about its voltage on any input pin which would be from -0.3V to Vdd+0.3V. The next one is about its voltage on Vdd and on any output pin which would be from -0.3V to +7.0V. The next one is about its DC input current which would be min -10uA and max +10uA. It should be noted that stressesabove those listed under "absolute maximum ratings" may cause permanent damage to the device. And so on. For more information please contact us.