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Zakładka z wyszukiwarką danych komponentów |
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Zakładka z wyszukiwarką danych komponentów |
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AM422 Arkusz danych(PDF) 3 Page - Analog Microelectronics |
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AM422 Arkusz danych(HTML) 3 Page - Analog Microelectronics |
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3 / 10 page  VOLTAGE/CURRENT CONVERTER AM422 analog microelectronics April 99 3/10 Parameter Symbol Conditions Min. Typ. Max. Unit V/I Converter Internal Gain GVI 1.00 Trim Range adjustable by R0 0.75 1.00 1.25 Voltage Range at R0 FS VR0FS 400 500 580 mV Offset Voltage VOS βF ≥ 100 ± 2 ± 6mV VOS vs. Temperature dVOS/dT βF ≥ 100 ± 7 ± 20 µV/°C Output Offset Current IOUTOS 3–wire operation –35 –50 µA IOUTOS vs. Temperature dIOUTOS/dT 3–wire operation 55 80 nA/°C Output Offset Current IOUTOS 2–wire operation 14 22 µA IOUTOS vs. Temperature dIOUTOS/dT 2–wire operation 22 35 nA/°C Output Control Current IOUTC 2–wire operation, VR0/100mV 5 µA IOUTC vs. Temperature dIOUTC/dT 2–wire operation –9 nA/°C Output Voltage Range VOUT VOUT = RL IOUT, VCC < 16V 0 VCC – 6 V VOUT VOUT = RL IOUT, VCC ≥ 16V 010 V Output Current Range FS IOUTFS IOUT = VR0/R0, 3–wire operation 20 mA Output Resistance ROUT 0.5 1.0 M Ω Load Capacitance CL 0 500 nF Protection Functions Voltage Limitation at R0 VLIMR0 VR0 = VIN/2, SET = VREF/2 580 635 690 mV VLIMR0 VIN = 0, VR0 = VSET/2 – VREF/2 580 640 700 mV Temperature Limitation TLIMIT 110 130 150 °C Protection against reverse polarity Ground vs. VS vs. IOUT 35 V Current in case of reverse polarity Ground = 35V, VS = IOUT = 0 3.8 mA System Parameters Nonlinearity ideal input 0.05 0.15 %FS * In 2–wire operation a maximum current of IOUTmin – ICC is valid Currents flowing into the IC are negative BOUNDARY CONDITIONS Parameter Symbol Conditions Min. Typ. Max. Unit Sense Resistor R0 IOUTFS = 20mA 202529 Ω R0 c = 20mA/IOUTFS c ⋅ 20 c ⋅ 25 c ⋅ 29 Ω Stabilisation Resistor R5 IOUTFS = 20mA 354045 Ω R5 c = 20mA/IOUTFS c ⋅ 35 c ⋅ 40 c ⋅ 45 Ω Load Resistance RL limitation only for 3–wire operation 0 500 Ω Sum Offset Resistors R3 + R4 20 200 k Ω VREF Capacitance C1 1.9 2.2 5.0 µF Output Capacitance C2 only for 2–wire operation 90 100 250 nF D1 Breakdown Voltage VBR 35 50 V T1 Forward Current Gain βF 50 150 |
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