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LM2902 数据表(PDF) 4 Page - STMicroelectronics |
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LM2902 数据表(HTML) 4 Page - STMicroelectronics |
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4 / 20 page ![]() 3 Absolute maximum ratings and operating conditions Table 1. Absolute maximum ratings (AMR) Symbol Parameter Value Unit VCC Supply voltage (1) ± 16 to 32 V Vid Differential input voltage (2) 32 Vin Input voltage -0.3 to 32 Output short-circuit duration (3) Infinite s Tj Maximum junction temperature 150 ° C Tstg Storage temperature range -65 to 150 Iin Input current : Vin driven negative (4) 5 in DC or 50 in AC (duty cycle = 10 %, T = 1 s) mA Input current : Vin driven positive above AMR value (5) 0.4 Rthja Thermal resistance junction-to-ambient (6) SO14 105 ° C/W TSSOP14 100 QFN16 3x3 45 Rthjc Thermal resistance junction-to-case SO14 31 TSSOP14 32 QFN16 3x3 14 ESD HBM: human body model (7) 370 V MM: machine model (8) 150 CDM: charged device model (9) 1500 1. All voltage values, except the differential voltage are with respect to the network ground terminal. 2. Differential voltages are the non-inverting input terminal with respect to the inverting input terminal. 3. Short-circuits from the output to VCC + can cause excessive heating and eventual destruction. The maximum output current is approximately 20 mA, independent of the magnitude of VCC +. 4. This input current only exists when the voltage at any of the input leads is driven negative. It is due to the collector-base junction of the input PNP transistor becoming forward-biased and thereby acting as an input diode clamp. In addition to this diode action, there is an NPN parasitic action on the IC chip. This transistor action can cause the output voltages of the op amps to go to the VCC voltage level (or to ground for a large overdrive) for the time during which an input is driven negative. This is not destructive and normal output is restored for input voltages above -0.3 V. 5. The junction base/substrate of the input PNP transistor polarized in reverse must be protected by a resistor in series with the inputs to limit the input current to 400 µ A max (R = (Vin - 36 V)/400 µ A). 6. Rthja/c are typical values. 7. Human body model: a 100 pF capacitor is charged to the specified voltage, then discharged through a 1.5 kΩ resistor between two pins of the device. This is done for all couples of connected pin combinations while the other pins are floating. 8. Machine model: a 200 pF capacitor is charged to the specified voltage, then discharged directly between two pins of the device with no external series resistor (internal resistor < 5 Ω). This is done for all couples of connected pin combinations while the other pins are floating. 9. Charged device model: all pins and the package are charged together to the specified voltage and then discharged directly to the ground through only one pin. This is done for all pins. Table 2. Operating conditions Symbol Parameter Value Unit VCC Supply voltage 3 to 30 V Vicm Common mode input voltage range (VCC +) - 1.5 Tmin ≤ Tamb ≤ Tmax (VCC +) - 2 Toper Operating free-air temperature range -40 to 125 ° C LM2902 Absolute maximum ratings and operating conditions DS0506 - Rev 9 page 4/20 |
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