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DG202BDQ-T1-E3 Datasheet(PDF) 8 Page - Vishay Siliconix |
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DG202BDQ-T1-E3 Datasheet(HTML) 8 Page - Vishay Siliconix |
8 / 10 page www.vishay.com 8 Document Number: 70037 S-71155–Rev. H, 11-Jun-07 Vishay Siliconix DG201B/202B APPLICATIONS Figure 6. Sample-and-Hold LM101A + 15 V - 15 V 30 pF + 15 V - 15 V V+ V- DG201B 50 pF 1000 pF J202 J500 J507 + 15 V 2N4400 - 15 V VIN VOUT 1 k Ω 200 Ω 5 M Ω 5.1 M Ω Aquisition Time = 25 µs Aperature Time = 1 µs Sample to Hold Offset = 5 mV Droop Rate = 5 mV/s Logic Input Low = Sample High = Hold – + Figure 7. Active Low Pass Filter with Digitally Selected Break Frequency TTL Control 150 pF 1500 pF + 15 V DG201B GND 30 pF LM101A + 15 V - 15 V 1 10 100 1 k 10 k 100 k 1 M - 40 0 160 120 80 fC4 Select fC3 Select fC2 Select fC1 Select R1 = 10 kΩ R2 = 10 kΩ R3 = 1 MΩ VOUT V1 V- C4 C3 C2 C1 AL (Voltage Gain Below Break Frequency) = = 100 (40 dB) R3 R1 fC (Break Frequency) = 1 2 πR3CX 1 2 πR1CX fL (Unity Gain Frequency) = Max Attenuation = rDS(on) 10 k Ω ≈ - 47 dB 0.015 µF 0.15 µF - 15 V – + 40 f - Frequency (Hz) fL1 fL2 fL3 fL4 fC1 fC2 fC3 fC4 |
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