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LT6555IGN 数据表(PDF) 12 Page - Linear Technology |
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LT6555IGN 数据表(HTML) 12 Page - Linear Technology |
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12 / 16 page ![]() LT6555 12 6555f Figure 5. Demo Board Schematic 5 IN1A 4 3 2 5 IN2A 4 3 2 5 IN3A 4 3 2 5 IN1B 4 3 2 5 IN2B 4 3 2 5 IN3B 4 3 2 IN1B AGND1 IN3A VREF VREF IN2A DGND DGND IN1A AGND2 8 9 10 11 12 7 6 5 4 3 2 1 17 16 15 14 13 18 19 20 21 22 23 24 V+ OUT2 V– OUT1 IN3B AGND3 IN2B V– V+ V+ V– OUT3 V+ SEL SEL EN V+ U1 LT6555CGN EXT GND 1 3 2 JP5 VREF JP12 BNC × 6 DGND 1 1 1 1 1 1 L1 L1 L1 L1 L1 L1 Z = 75 Z = 75 Z = 75 Z = 75 Z = 75 Z = 75 JP13 JP14 JP5 JP6 JP7 J3 BANANA JACK FLOAT AGND 1 3 2 JP2 DGND EXT ENABLE 1 3 2 JP1 CONTROL 1 3 VCC SEL A/B AB DGND 2 JP4 SEL R7 20k J1 50 Ω BNC EN 5432 1 R10 75 Ω R11 75 Ω R12 75 Ω R4 75 Ω R5 75 Ω R6 75 Ω 2 DUAL NOTE: 470pF BYPASS CAPACITORS LOCATED AS CLOSE TO PINS AS POSSIBLE SINGLE AGND JP3 SUPPLY 3 1 E1 EN E4 SEL A/B E2 DGND E5 VREF E3 AGND R8 50 Ω OPT Z = 50 Z = 50 EN 5 OUT1 J9 1 L2 L2 L2 Z = 75 R1 75 Ω R2 75 Ω R3 75 Ω Z = 75 Z = 75 1 1 J10 J11 J4 BANANA JACK VEE 6555 F05 4 3 2 5 OUT2 4 3 2 5 OUT3 VEE –3.3V TO –5V 4 3 2 C1 4700pF C10 4700pF C11 0.33 µF 16V C2 470pF C3 470pF C4 10 µF 16V 1206 C7 470pF J2 BANANA JACK VCC VCC 3.3V TO 5V C8 0.33 µF C5 4700pF C6 470pF C9 10 µF 16V 1206 BNC × 3 5432 1 R9 50 Ω OPT J8 50 Ω BNC Figure 6. Demo Board Topside (IC Removed for Clarity) Figure 7. Demo Board Bottom Side TYPICAL APPLICATIO |
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