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DG309B Datasheet(PDF) 7 Page - Vishay Siliconix |
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DG309B Datasheet(HTML) 7 Page - Vishay Siliconix |
7 / 15 page Document Number: 70047 S11-0303-Rev. G, 28-Feb-11 www.vishay.com 7 Vishay Siliconix DG308B, DG309B TEST CIRCUITS Figure 2. Switching Time 50 % 0 V 12 V tOFF tON VO tr < 20 ns tf < 20 ns Logic Input Switch Output 90 % CL 35 pF RL 1 k VO = VS RL + RDS(on) RL VS = + 3 V VO V- V+ IN S D 12 V - 15 V GND + 15 V Figure 3. Off Isolation S IN 50 D Rg = 50 VS VO 0 V, 15 V Off Isolation = 20 log VS VO V+ - 15 V GND V- C C + 15 V Figure 4. Channel-to-Channel Crosstalk IN1 0 V, 15 V VO + 15 V - 15 V GND V+ V- NC XTALK Isolation = 20 log C VS C VO 0 V, 15 V 50 VS S1 IN2 S2 Rg= 50 D1 D2 C = RF bypass 50 Figure 5. Charge Injection CL 1000 pF Vg 12 V D V+ V- Rg - 15 V GND IN S VO + 15 V VO VO INX ON ON OFF VO = measured voltage error due to charge injection The charge injection in coulombs is Q = CL x VO |
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