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AM79C30AVC датащи(PDF) 77 Page - Advanced Micro Devices |
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AM79C30AVC датащи(HTML) 77 Page - Advanced Micro Devices |
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77 / 101 page ![]() Am79C30A/32A Data Sheet 77 LIU Characteristics All of the parameters below are measured at the chip terminals and are consistent with 2:1 transformers. Parameter Symbol Parameter Descriptions Preliminary Unit Min Typ Max VLOUT Output mark amplitude measured between LOUT2 and LOUT1 (Note 1) 2.210 2.326 2.442 V VLIN Receivable input level measured between LIN2 and LIN1, with noise added as specified by CCITT I.430 section 8.6.2.1 (Note 2) 530 1800 mV ZOUT Output impedence measured between LOUT2 and LOUT1 spacing condition 20 Kohm ZIN Input impedence measured between LIN2 and LIN1 20 Kohm J Timing extraction jitter on LOUT –7 +7 % PD Total phase deviation (LOUT with respect to LIN) –7 +15 % PU Pulse unbalanced measured between LOUT2 and LOUT1 (Note 1) –5 +5 % PW Output pulse width measured between LOUT2 and LOUT1 (Note 1) 4.7 5.2 5.7 µs Notes: 1. See the equivalent test load circuit and pulse template in Figures 26 and 27. 2. The 530-mV receive input level is equivalent to 9.0 dB of attenuation from a nominal transmit level when measured at the LIN pins. Allowing 0.5-dB loss in the isolation transformer, and 1.0-dB loss in the input isolation resistors, this level will guarantee compliance to the CCITT receiver sensitivity spec of 7.5 dB when measured at the S reference point. 3. Typical receiver performance is 220 mV. |
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