ADI LT6105IDCB#TRMPBF

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Overview

The LT6105IDCB is a micropower, precision current sense amplifier with a very wide input common mode range. The LT6105IDCB monitors unidirectional current via the voltage across an external sense resistor. The input common mode range extends from –0.3V to 44V, with respect to the negative supply voltage (V –). This allows the LT6105IDCB to operate as a high side current sense monitor or a low side current sense monitor. It also allows the LT6105IDCB to monitor current on a negative supply voltage, as well as continuously monitor a battery from full charge to depletion. The inputs of LT6105IDCB can withstand differential voltages up to ±44V, which makes it ideal for monitoring a fuse or MOSFET switch.

The LT6105IDCB can operate from an independent power supply of 2.85V to 36V and draws only 150µA. When V + is powered down, the sense pins are biased off. This prevents loading of the monitored circuit, irrespective of the sense voltage. The LT6105IDCB is available in a 6-lead DFN and 8-lead MSOP package.

Features

Applications

• Subtraction operation circuits
• single/dual op amp sum and difference circuits
• Integrator circuits
• Differentiator circuits
• Logarithmic operation circuits
• Exponential operation circuits
• Multiplication circuits
• Division circuits
• Precision measurement
• Power control