Q1900

The Q1900 is designed as viterbi / trellis decoder. It is well suited for many commercial satellite communication networks, including INMARSAT and INTELSAT. The low-cost and high performance of it make it ideal for FEC requirements in systems such as direct broadcast satellites (DBS), microwave point-to-point data links, very small aperture terminals, digital modems, digital videl transmission systems, high speed data modems and military and NASA communication systems.

Q1900 has many features. The first one is viterbi mode rates 1/3, 1/2, 3/4 and 7/8. The next one is trellis mode rates 2/3 and 3/4. The next one is full duplex encode and decode in both viterbi and trellis modes. The next one is large coding gains at Eb/No of 10^-5. The next one is automatic phase synchronization for BPSK and QPSK in viterbi mode and for 8-PSK and 16-PSK in trellis mode. The next one is data rates up to 30Mbps for viterbi mode and 90Mbps (16-PSK) for trellis mode. The next one is 3-bit soft decision or 1-bit hard decision decoder inputs for viterbi mode. The next one is viterbi mode on-chip channel bit error rate (BER) monitor. The next one is easy implementation of additional code rates. The next one is processor interface simplifies control and status. The next one is low-power CMOS implementation. The next one is standard 84-pin PLCC or 100-pin VTQFP package. That are all the main features.

Some absolute maximum ratings of Q1900 have been concluded into several points as follow. The first one is about its storage temperature range which would be from -65°C to +150°C. The next one is about its junction temperature which would be +150°C. The next one is about its voltage on any input pin which would be min -0.3V and max Vdd+0.3 V. The next one is about its voltage on Vdd and on any output pin which would be min -0.3V and max +7V. And so on. For more information please contact us.