DIO2240

Version 1.2, Jan 2026

www.dioo.com

© 2026 Dioo Microcircuits Co., Ltd. Jiangsu

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Figure 16. Mid-external reference output

With two reference pins, the midpoint of the output voltage can be adjusted for system circuitry connections

to analog to digital converters (ADCs) or other amplifiers. The reference pins can be connected directly to

supply, ground, or a low-impedance reference voltage. The reference pins can be connected together and

biased by using a resistor divider to achieve a custom output voltage. Please use the output as a differential

signal with respect to the resistor divider voltage when the amplifier is used in this configuration (see Figure

17). Because the internal impedance shifts can adversely affect device performance, it is not recommended

to use of the amplifier output as a single-ended signal in this configuration.

Figure 17. Setting the reference with a resistor divider

9.3.4. Calculating total error

The typical individual errors are mentioned in the EC table, such as gain error, offset error and nonlinearity

error. However, total error, which includes all of the individual error components, is not shown in the EC

table. To calculate the error accurately, the operating conditions of the device should be considered firstly.

For some current shunt monitors, a total error in shown in the product data sheet. However, specifying such

total error has little practical value because this total error term is accurate under only one particular set of

operating conditions. It means that any deviation from these specific operating conditions will change the

total error value. For the device under normal operating conditions, this section will discuss the individual

error sources and how to apply them to calculate the total error value.

The typical error sources that have the largest impact on the total error of the device are input offset voltage,