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AM422 Fiches technique(PDF) 6 Page - Analog Microelectronics |
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AM422 Fiches technique(HTML) 6 Page - Analog Microelectronics |
6 / 10 page VOLTAGE/CURRENT CONVERTER AM422 analog microelectronics April 99 6/10 the input voltage VIN has to change to ∆∆ VV R RR PIN IN 4 2 12 = + (8) With the value of the relationship of the resistors R1 and R2 R R VV V IN PIN PIN 1 2 4 4 = − ∆∆ ∆ (9) the additional offset current can be calculated as II I I V R R RR SET OUTmin INmin OUTmin INmin =− =− + 2 0 2 12 (10) The value of the set resistor can then be found using equation 4 In respect to the load resistor RL, the value of the supply voltage VS has to be considered with care. The following relation is generally valid (see equation 1): VI R V S OUTmax L CCmin ≥+ . (11) The resulting operating range is indicated in Figure 4. Sample calculations and typical values for the external components are listed in the Application Notes (beginning page 8). V S [V] R L [Ω] 6 35 V CCmin = 6V R Lmax = 500 Ω I OUTmax = 20mA 16 R VV I L SCCmin OUTmax ≤ − 24 12 500 Operating Area 0 300 0 Figure 4 |
Numéro de pièce similaire - AM422 |
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Description similaire - AM422 |
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