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Os motores de busca de Datasheet de Componentes eletrônicos |
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Os motores de busca de Datasheet de Componentes eletrônicos |
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OP196GP Folha de dados(PDF) 15 Page - Analog Devices |
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OP196GP Folha de dados(HTML) 15 Page - Analog Devices |
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15 / 16 page  OP196/OP296/OP496 REV. B –15– * OP496 SPICE Macro-model REV. B, 5/95 * ARG / ADSC * * Copyright 1995 by Analog Devices * * Refer to “README.DOC” file for License Statement. * Use of this model indicates your acceptance of the * terms and provisions in the License Statement. * * Node assignments * Noninverting input * Inverting input * Positive supply * Negative supply * Output * * .SUBCKT OP496 1 2 99 50 49 * * INPUT STAGE * IREF 21 50 1U QB1 21 21 99 99 QP 1 QB2 22 21 99 99 QP 1 QB3 4 219999QP 1.5 QB4 22 22 50 50 QN 2 QB5 11 22 50 50 QN 3 Q1 54750 QN 2 Q2 64850 QN 2 Q3 44750 QN 1 Q4 44850 QN 1 Q5 50 1799 QP 2 Q6 50 3899 QP 2 EOS 3 2 POLY(1) (17,98) 35U 1 Q7 99 1950 QN 2 Q8 99 3 1050QN 2 Q9 12 11 9 99 QP 2 Q10 13 11 10 99 QP 2 Q11 11 11 9 99 QP 1 Q12 11 11 10 99 QP 1 R1 99 5 50K R2 99 6 50K R3 12 50 50K R4 13 50 50K IOS 1 2 0.75N C10 5 6 3.183P C11 12 13 3.183P CIN 1 2 1P * * GAIN STAGE * EREF 98 0 POLY(2) (99,0) (50,0) 0 0.5 0.5 G1 98 15 POLY(2) (6,5) (13,12) 0 10U 10U R10 15 98 251.641MEG CC 15 49 8P D1 15 99 DX D2 50 15 DX * * COMMON MODE STAGE * ECM 16 98 POLY(2) (1,98) (2,98) 0 0.5 0.5 R11 16 17 1MEG R12 17 98 10 * * OUTPUT STAGE * ISY 99 50 20U EIN 35 50 POLY(1) (15,98) 1.42735 1 Q24 37 35 36 50 QN 1 QD4 37 37 38 99 QP 1 Q27 40 37 38 99 QP 1 R5 36 39 150K R6 99 38 45K Q26 39 42 50 50 QN 3 QD5 40 40 39 50 QN 1 Q28 41 40 44 50 QN 1 QL1 37 41 99 99 QP 1 R7 99 41 10.7K I4 99 43 2U QD7 42 42 50 50 QN 2 QD6 43 43 42 50 QN 2 Q29 47 43 44 50 QN 1 Q30 44 45 50 50 QN 1.5 QD10 45 46 50 50 QN 1 R9 45 46 175 Q31 46 47 48 99 QP 1 QD8 47 47 48 99 QP 1 QD9 48 48 51 99 QP 5 R8 99 51 2.9K I5 99 46 1U Q32 49 48 99 99 QP 10 Q33 49 44 50 50 QN 4 .MODEL DX D() .MODEL QN NPN(BF=120VAF=100) .MODEL QP PNP(BF=80 VAF=60) .ENDS VOUT +5V A3 A2 A1 100k 0.1 F 1/4 OP496 1/4 OP496 100k GAIN = 259 200 10-TURNS 26.7k 26.7k 100 6.17k 37.4k +5V 100 RTD 2.55M AD589 1/4 OP496 NOTE: ALL RESISTORS 1% OR BETTER 392 392 20k Figure 48. A Single Supply RTD Amplifier Amplifiers A2 and A3 are configured in a two op amp instru- mentation amplifier configuration. For ease of measurement, the IA resistors are chosen to produce a gain of 259, so that each 1 °C increase in temperature results in a 10 mV increase in the output voltage. To reduce measurement noise, the band- width of the amplifier is limited. A 0.1 µF capacitor, connected in parallel with the 100 k Ω resistor on amplifier A3, creates a pole at 16 Hz. |
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