поискавой системы для электроныых деталей |
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ISL55004IB-T7 датащи(PDF) 11 Page - Intersil Corporation |
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ISL55004IB-T7 датащи(HTML) 11 Page - Intersil Corporation |
11 / 12 page 11 FN6219.2 July 27, 2006 Differential Output Instrumentation Amplifier The addition of a third amplifier to the conventional three amplifier instrumentation amplifier introduces the benefits of differential signal realization, specifically the advantage of using common-mode rejection to remove coupled noise and ground potential errors inherent in remote transmission. This configuration also provides enhanced bandwidth, wider output swing and faster slew rate than conventional three amplifier solutions with only the cost of an additional amplifier and few resistors. Strain Gauge The strain gauge is an ideal application to take advantage of the moderate bandwidth and high accuracy of the ISL55004. The operation of the circuit is very straightforward. As the strain variable component resistor in the balanced bridge is subjected to increasing strain, its resistance changes, resulting in an imbalance in the bridge. A voltage variation from the referenced high accuracy source is generated and translated to the difference amplifier through the buffer stage. This voltage difference as a function of the strain is converted into an output voltage. + - - + - + + - eo eo4 eo3 REF R3 R3 R3 R3 R3 R3 R2 R2 RG A2 e2 A4 A3 R3 R3 A1 e1 + - FIGURE 30. DIFFERENTIAL OUTPUT AMPLIFIER e o3 12R 2 RG ⁄ + () e 1 e 2 – () – = e o4 12R 2 RG ⁄ + () e 1 e 2 – () = e o 21 2R 2 RG ⁄ + () e 1 e 2 – () – = BW 2f C1 2 , A Di ------------------ = A Di 21 2R 2 RG ⁄ + () – = + - V+ V- V2 5V C12 1nF VOUT (V1+V2+V3+V4) RL 1k Ω V4 5V R17 1k Ω C6 1nF RF 1k Ω + - R18 1k Ω + - + - VARIABLE SUBJECT TO STRAIN 1k Ω 1k Ω R15 R16 1k Ω 1k Ω V5 0V FIGURE 31. STRAIN GAUGE ISL55004 |
Аналогичный номер детали - ISL55004IB-T7 |
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Аналогичное описание - ISL55004IB-T7 |
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