This single-supply, low-side, current-sensing solution accurately detects load current between 0 A to 1 A and converts it to a voltage between 0 V to 4.9 V. The input current range and output voltage range can be scaled as necessary and larger supplies can be used to accommodate larger swings. A negative charge pump (such as the LM7705) is used as the negative supply in this design to maintain linearity for output signals near 0 V.
| Type | Title | Date | ||
|---|---|---|---|---|
| * | Circuit design | Single-supply, low-side, unidirectional current-sensing solution (Rev. A) | 01 Feb 2019 | |
| Application note | Low-Side Current Shunt Op-Amp Circuit to 3-V Single-Ended ADC for Cost-Optimized (Rev. A) | 29 Sep 2021 | ||
| User guide | 0-A to 1-A Single-Supply Low-Side Current-Sensing Solution Design Guide (Rev. B) | 11 Dec 2015 | ||
| Design guide | +/-1A Single-Supply Low-Side Current Sensing Solution Design Guide | 08 Dec 2014 |
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