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LT1991ACMS-TRPBF Datasheet(PDF) 9 Page - Linear Technology |
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LT1991ACMS-TRPBF Datasheet(HTML) 9 Page - Linear Technology |
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9 / 28 page  LT1991 9 1991fg TYPICAL PERFORMANCE CHARACTERISTICS P1 (Pin 1): Noninverting Gain-of-1 input. Connects a 450k internal resistor to the op amp’s noninverting input. P3 (Pin 2): Noninverting Gain-of-3 input. Connects a 150k internal resistor to the op amp’s noninverting input. P9 (Pin 3): Noninverting Gain-of-9 input. Connects a 50k internal resistor to the op amp’s noninverting input. VEE (Pin 4): Negative Power Supply. Can be either ground (in single supply applications), or a negative voltage (in split supply applications). REF (Pin 5): Reference Input. Sets the output level when difference between inputs is zero. Connects a 450k internal resistor to the op amp’s noninverting input. OUT (Pin 6): Output. VOUT = VREF + 1 • (VP1 – VM1) + 3 • (VP3 – VM3) + 9 • (VP9 – VM9). VCC (Pin 7): Positive Power Supply. Can be anything from 2.7V to 36V above the VEE voltage. M9 (Pin 8): Inverting Gain-of-9 input. Connects a 50k internal resistor to the op amp’s inverting input. M3 (Pin 9): Inverting Gain-of-3 input. Connects a 150k internal resistor to the op amp’s inverting input. M1 (Pin 10): Inverting Gain-of-1 input. Connects a 450k internal resistor to the op amp’s inverting input. Exposed Pad: Must be soldered to PCB. (Difference Amplifier Configuration) 50mV/DIV 5μs/DIV GAIN = 1 1991 G18 50mV/DIV 5μs/DIV 1991 G19 GAIN = 3 50mV/DIV 5μs/DIV GAIN = 9 1991 G20 Small Signal Transient Response Small Signal Transient Response Small Signal Transient Response LT1991 1991 BD 9 8 2 3 4 5 7 6 10 1 M1 M3 M9 P1 P3 P9 VCC VEE OUT REF 50k 50k 150k 150k 450k 450k 450k 450k INM INP OUT 4pF 4pF PIN FUNCTIONS BLOCK DIAGRAM |
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