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LM339DG Arkusz danych(PDF) 6 Page - ON Semiconductor |
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LM339DG Arkusz danych(HTML) 6 Page - ON Semiconductor |
6 / 12 page ![]() LM339, LM239, LM2901, LM2901V, NCV2901, MC3302 http://onsemi.com 6 APPLICATIONS INFORMATION These quad comparators feature high gain, wide bandwidth characteristics. This gives the device oscillation tendencies if the outputs are capacitively coupled to the inputs via stray capacitance. This oscillation manifests itself during output transitions (VOL to VOH). To alleviate this situation input resistors < 10 k W should be used. The addition of positive feedback (< 10 mV) is also recommended. It is good design practice to ground all unused input pins. Differential input voltages may be larger than supply voltages without damaging the comparator’s inputs. Voltages more negative than −300 mV should not be used. 10 Figure 9. Zero Crossing Detector (Single Supply) Figure 10. Zero Crossing Detector (Split Supplies) Vin(min) ≈ 0.4 V peak for 1% phase distortion (Dq). D1 prevents input from going negative by more than 0.6 V. R1 + R2 = R3 R3 ≤ R5 for small error in zero crossing Vin 10 k D1 R1 8.2 k 6.8 k R2 15 k R3 +15 V * q VCC 10 k Vin VEE Vin Vin(min) VCC VO VEE Dq q * ) 10 M R5 220 k R4 220 k VO VO + ORDERING INFORMATION Device Package Shipping† LM239D SOIC−14 55 Units/Tube LM239DG SOIC−14 (Pb−Free) LM239DR2 SOIC−14 2500 / Tape & Reel LM239DR2G SOIC−14 (Pb−Free) LM239DTBR2 TSSOP−14* LM239DTBR2G TSSOP−14* LM239N PDIP−14 25 Units/Rail LM239NG PDIP−14 (Pb−Free) LM339D SOIC−14 55 Units/Tube LM339DG SOIC−14 (Pb−Free) LM339DR2 SOIC−14 2500 / Tape & Reel LM339DR2G SOIC−14 (Pb−Free) LM339DTBR2 TSSOP−14* LM339DTBR2G TSSOP−14* †For information on tape and reel specifications, including part orientation and tape sizes, please refer to our Tape and Reel Packaging Specifications Brochure, BRD8011/D. *This package is inherently Pb−Free. |
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Podobny opis - LM339DG |
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