The LMP8601-Q1, LMP8602-Q1, and LMP8603-Q1 devices are fixed-gain, precision current-sense amplifiers (also referred to as current-shunt monitors). The input common-mode voltage range is –22V to +60V when operating from a single 5V supply, or –4V to +27V with a 3.3V supply. The LMP860x-Q1 are parts designed for unidirectional and bidirectional current sensing applications.
These devices have a precise gain of 20x (LMP8601-Q1), 50x (LMP8602-Q1), and 100x (LMP8603-Q1), and are adequate in most targeted applications to drive an ADC to full-scale value. The fixed gain is achieved in two separate stages: a preamplifier with a gain of 10x and an output stage buffer amplifier with a gain of 2x (LMP8601-Q1), 5x (LMP8602-Q1), or 10x (LMP8603-Q1). The path between the two stages is brought out on two pins to enable the option of an additional filter network or modifying the gain.
The offset input pin enables these devices for unidirectional or bidirectional single supply voltage current sensing.
The LMP860x-Q1 devices incorporate enhanced manufacturing and support processes for the automotive market and are compliant with the AEC-Q100 standard.
| Top documentation | Type | Title | Format options | Date |
|---|---|---|---|---|
| * | Data sheet | LMP860x-Q1 AEC-Q100 , –22V to 60V, Bidirectional Current Sense Amplifier With In-Line Filter Capability datasheet (Rev. I) | PDF | HTML | Jun 10, 2026 |
| Application note | Using a PCB Copper Trace as a Current Sense Shunt Resistor (Rev. A) | PDF | HTML | Apr 27, 2026 | |
| Application note | Risks and Prevention of ESD, EOS, and Latch Up Events for Current Sense Amplifiers | PDF | HTML | Nov 18, 2024 | |
| Application brief | Switching Power Supply Current Measurements (Rev. E) | PDF | HTML | Apr 7, 2023 | |
| Application brief | Low-Drift, Precision, In-Line Motor Current Measurements With PWM Rejection (Rev. D) | PDF | HTML | Apr 7, 2023 | |
| Application brief | Benefits of Intergated Low Inductive Shunt for PWM Applications | Jun 17, 2017 | ||
| Application brief | Precision LED Brightness and Color Mixing With Discrete Current Sense Amplifiers | Feb 28, 2017 |
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The LMP860X SOIC Evaluation Board is designed to evaluate current sense amplifiers like the LMP8601, LMP8602, and LMP8603. These all are 60V Common Mode, Bidirectional Precision Current Sensing amplifier with different gain. This board has a LMP860X part mounted on the PCB together with the (...)
This high-side current shunt monitor is used to measure the voltage developed across a current-sensing resistor when current passes through it.
Additionally, an external protection circuit is implemented to provide surge and fast-transient protection and demonstrate the different immunity levels to (...)
| Package | Pins | CAD symbols, footprints & 3D models |
|---|---|---|
| SOIC (D) | 8 | Ultra Librarian |
| VSSOP (DGK) | 8 | Ultra Librarian |
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