explain
Ina21x is voltage output, Shunt Monitor (also known as current sensing amplifier). The device can usually provide overcurrent protection and precision current measurement for system optimization. It is also often used in closed-loop feedback circuits. This series of devices can sense the voltage drop of shunt resistance in the common mode voltage range of – 0.3V to 26V, which is independent of the power supply voltage. There are 6 kinds of fixed gains available: 50V / V, 75V / V, 100V / V, 200V / V, 500V / V or 1000V / v. This series of devices adopt zero drift architecture with low offset, so the maximum voltage drop at both ends of shunt resistor can be kept below 10mV full scale when current sensing.
This series of devices can be powered by a single power supply with a voltage of 2.7V to 26V, and the maximum power current consumption is 100 µ a. All device versions are rated for operation in the extended operating temperature range of - 40 ° C to + 125 ° C and are packaged in SC70 and uqfn.
characteristic
• wide common mode voltage range: - 0.3V to 26V
• offset voltage: ± 35 μ V (max, ina210) (shunt voltage drop as low as 10mV full scale can be achieved)
• accuracy:
– gain error (maximum overheat error):
–± 0.5% (Rev. C)
–± 1% (versions a and b)
– 0.5 µ V / ° C offset drift (maximum)
– 10ppm / ° C gain drift (maximum)
• gain selection:
–INA210:200 V/V
–INA211:500 V/V
–INA212:1000 V/V
–INA213:50 V/V
–INA214:100 V/V
–INA215:75 V/V
• quiescent current: 100 μ A (maximum)
• SC70 and thin uqfn packages: all models
application
• laptop
• mobile phones
• telecommunication equipment
• power management
• battery charger