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ISL837030 Datasheet(PDF) 10 Page - Intersil Corporation |
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ISL837030 Datasheet(HTML) 10 Page - Intersil Corporation |
10 / 25 page P e r f or m a nc e S pe c i f i c a t i on s ISL837030, ISL83740 10 FN8013.5 Demodulator Performance Specifications 1The maximum Acquisition and Tracking Rate Range is less than 400kHz when the baud rate is less than 6.6Mbaud, as shown in FIGURE 4. FIGURE 4 Acquisition/Tracking Range at Low Baud Rates BER Performance (Typical) 1 Performance is based on a standard setup using the Evaluation Platform’s VHF interface under typical operating conditions at baud rates > 10Mbaud as defined in Demodulator Input Requirements on page 9. All loop bandwidths are set by default to accommodate severe multipath distortions. Performance can be increased significantly by adjusting loop bandwidths for a less severe environment. Performance is 0.5dB to 1dB better when using the Evaluation Platform’s high performance L-band interface. ITEM DESCRIPTION Rx Carrier Tracking Range1 ± 400kHz Rx Carrier Acquisition Range1 Programmable from 50kHz to 400kHz in increments of 1kHz. For details, see the Programmer’s Reference AN9935. 100 150 200 250 300 350 400 450 345 67 8 Symbol Rate (MBaud) 64QAM and 128QAM available in ISL83740 only. PARAMETERS Eb/No CONDITIONS BER MODULATION TYPE INNER CODE RATE 1.0E-8 BER QPSK 1 8.1dB • Standard setup using low-cost VHF IF interface loopback1 8PSK, 1 11.6dB 16QAM 1 12.2dB 32QAM 1 14.8dB 64QAM 1 18.7dB 1.0E-10 BER 16QAM 3/4 7.8dB 7/8 9.0dB 32QAM 4/5 9.7dB 9/10 11.4dB 64QAM 5/6 12.7dB 11/12 15.0dB 128QAM 6/7 17.2dB Residual BER, FEC disabled 32QAM 1 BER < 1.0E-11 • Standard setup using low-cost VHF IF interface loopback1 • No added noise 0 • Baseband loopback, no noise |
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