The NCV21xR series from ON Semiconductor are automotive voltage-output current-sense amplifiers which can measure voltage across shunt resistors at common-mode voltages ranging from -0.3V to 26V, independent of the supply voltage. The NCV21xR amplifiers are AEC-Q100 qualified for use in automotive systems. ON Semiconductor also supplies the NCS21xR series for use in industrial applications.
Offering a choice of fixed gain values, the NCV21xR and NCS21xR series amplifiers are notable for their low offset voltage and zero-drift architecture. These enable the implementation of accurate and stable current-sensing circuits with maximum full-scale drops across the shunt resistor as low as 10mV.
NCS21xR: Zero-drift architecture
The NCV21xR amplifiers can operate from a single 2.2V to 26V power supply, compatible with the safe 2.5V voltage reference typically used in a measurement circuit, and can handle an absolute maximum input of 30V. They draw a maximum supply current of 80μA.
ON Semiconductor also supplies the NCS199AxR industrial current-sense amplifiers, which offer the flexibility of operating from a wide supply-voltage range of 2.2V to 26V, and which are rated for an absolute maximum voltage of 30V.
| NCS210R | NCS211R | NCS213R | NCS214R | |
| Gain (V/V) | 200 | 500 | 50 | 100 |
| Gain error (%) | 1 | 1 | >1 | 1 |
| Offset voltage (μV) | 35 | 35 | 100 | 60 |
Features
| Applications
|
 |
 |
