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ISL59482 Datasheet(PDF) 10 Page - Intersil Corporation |
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ISL59482 Datasheet(HTML) 10 Page - Intersil Corporation |
10 / 14 page 10 FN6209.2 December 22, 2006 Pin Equivalent Circuits Figure 27A illustrates the optimum output load for testing AC performance. Figure 27B illustrates the optimum output load when connecting to 50 Ω input terminated equipment. 42 IN2C1 Circuit 1 Channel 2 input for amplifier C1 43 GND Circuit 4A Ground pin for amplifier C1 44 IN3A1 Circuit 1 Channel 3 input for amplifier A1 45 IN3B1 Circuit 1 Channel 3 input for amplifier B1 46 IN3C1 Circuit 1 Channel 3 input for amplifier C1 Pin Description (Continued) ISL59482 (48 LD QFN) PIN NAME EQUIVALENT CIRCUIT DESCRIPTION IN V+ V- LOGIC PIN V+ V- GND 33k 21k + - 1.2V V+ V- OUT CIRCUIT 3 CIRCUIT 2 CIRCUIT 1 V1- ~1M Ω SUBSTRATE 1 V1- V1+ GNDB1 CAPACITIVELY COUPLED ESD CLAMP GNDC1 GNDA1 V2- V2+ GNDB2 CAPACITIVELY COUPLED ESD CLAMP GNDC2 GNDA2 CIRCUIT 4B CIRCUIT 4A THERMAL HEAT SINK PAD V2- ~1M Ω SUBSTRATE 2 AC Test Circuits FIGURE 27A. TEST CIRCUIT WITH OPTIMAL OUTPUT LOAD FIGURE 27B. TEST CIRCUIT FOR MEASURING WITH 50 Ω OR 75 Ω INPUT TERMINATED EQUIPMENT ISL59482 CL 50 Ω VIN 500 Ω RL 5pF or 75 Ω ISL59482 RS CL VIN 475 Ω TEST 5pF 50 Ω or 75 Ω 50 Ω or 75 Ω 50 Ω or 75 Ω EQUIPMENT FIGURE 27C. BACKLOADED TEST CIRCUIT FOR VIDEO CABLE APPLICATION. BANDWIDTH AND LINEARITY FOR RL LESS THAN 500Ω WILL BE DEGRADED. FIGURE 27. TEST CIRCUITS AC Test Circuits (Continued) ISL59482 RS CL VIN 50 Ω or 75Ω TEST 5pF 50 Ω or 75 Ω 50 Ω or 75 Ω EQUIPMENT ISL59482 |
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