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LT6105 Datasheet(PDF) 11 Page - Linear Technology |
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LT6105 Datasheet(HTML) 11 Page - Linear Technology |
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11 / 20 page  LT6105 11 6105fa PIN FUNCTIONS –IN (Pin 1/Pin 1): Negative Sense Input Terminal. Negative sense voltage input will remain functional for voltages up to 44V, referred to V–. Connect –IN to an external gain-setting resistor RIN1 (RIN1 = RIN2) to set the gain. V+ (Pin 2/Pin 2): Power Supply Voltage. This pin supplies current to the amplifier and can operate from 2.85V to 36V, independent of the voltages on the –IN or +IN pins. V– (Pin 3/Pin 4): Negative Power Supply Voltage or Ground for Single Supply Operation. VOUT (Pin 4/Pin 5): Voltage Output: VOUT = AV • (VSENSE ± VOS) VOS is the input offset voltage. AV is the gain set by exter- nal RIN1, RIN2, ROUT. AV = ROUT/RIN1, for RIN1 = RIN2. NC (Pin 5/Pins 3, 6, 7): Not Connected Internally. +IN (Pin 6/Pin 8): Positive Sense Input Terminal. Connecting a source to VS+ and a load to VS– will allow the LT6105 to monitor the current through RSENSE, refer to Figure 1. Connect +IN to an external gain-setting resistor RIN2 to set the gain. +IN remains functional for voltages up to 44V, referred to V–. Exposed Pad (Pin 7) DFN Only: V–. The Exposed Pad is connected to the V– pin. It should be connected to the V– trace of the PCB, or left floating. (DCB/MS8) BLOCK DIAGRAM ROUT VSENSE RSENSE RIN2 RIN1 VS+ VS– LT6105 TO LOAD SOURCE 0V TO 44V VOUT = VSENSE • ROUT RIN2 VOUT = VSENSE • WHERE RIN = RIN1 = RIN2 ROUT RIN AV = ROUT RIN VOUT V+ –IN +IN V – SET RIN1 = RIN2 FOR BEST ACCURACY IF RIN1 ≠ RIN2, THEN RIN1, RIN2, ROUT ARE EXTERNAL RESISTORS V(–IN) > 1.6V: VOUT = VSENSE • ROUT RIN1 V(–IN) < 1.6V: 6105 F01 – + – + A1 Q2 Q3 Q1 A2 Figure 1. Simplified Block Diagram |
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Similar Description - LT6105_15 |
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