The STMicroelectronics TSC2011 is a precision bidirectional current sensing amplifiers. They can sense the current thanks to a shunt resistor over a wide range of common mode voltages, from - 20 to + 70 V, whatever the supply voltage is. It is available with an amplifier gain of 60 V/V for TSC2011.They are able to sense very low drop voltages as low as 10 mV full scale minimizing the measurement error.

Gain error: 0.3% max
Offset drift: 5 μV/°C max
Quiescent current: 20 μA in shutdown mode