AS2333

Document number: DS42770 Rev. 3 - 2

10 of 16

www.diodes.com

January 2021

© Diodes Incorporated

AS2333

Application Information (continued)

Low-Side Current Monitor Application

Low-side current sensing is used to monitor the current through a load. This method can be used to detect over-current conditions and is often

used in feedback control, as shown in Figure 8. A sense resistor is placed in series with the load to the ground. Precision resistors are required for

high accuracy and the resulting voltage drop is amplified using the AS2333.

Figure 8. Low-Side Current Monitor Application

Differential Amplifier for Bridged Circuits

Sensors to measure strain, pressure, and temperature are often configured in a Wheatstone bridge circuit, as shown in Figure 9. In the

measurement, the voltage change that is produced is relatively small and needs to be amplified before going into an ADC. Precision amplifiers are

recommended in these types of applications due to their high gain, low noise, and low offset voltage.

Figure 9. Bridge Circuit Amplification