DIO20903

Version 1.3, Jan 2025

www.dioo.com

© 2025 Dioo Microcircuits Co., Ltd. Jiangsu

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9. Application Information

Important notice: Validation and testing are the most reliable ways to confirm system functionality.

The application information is not part of the specification and is for reference purposes only.

The DIO20903 is the dual differential comparator featuring high speed and low power. The device is

typically used to compare a single signal to a reference or two signals against each other. Many users

utilize the open drain output to drive the comparison logic output to a logic voltage level to an MCU or logic

device. The wide supply range and high voltage capability enable the level of this comparator to shift to

higher or lower voltages.

Figure 11. Single-ended and differential comparator configurations

9.1. Low input bias current

The DIO20903 comparator has an ultra-low input bias current at about 10 pA, which allows the comparator

to be used in applications with high resistance sources.

9.2. Wide range of supply voltage

The DIO20903 is enable to operate with the supply voltage up to 42 V. The open-drain output allows the

user to configure the output's logic high voltage (VOH) and enables the comparator to be used in AND

functionality.

9.3. Output and drive current

Output current is determined by the load/pull-up resistance and logic/pullup voltage. The output current

generates a output low voltage (VOL) from the comparator and VOL is proportional to the output current.

9.4. Response time

Response time is a function of overdriven input. The rising/falling time can be determined by the load

capacitance (CL), load/pullup resistance (RPULLUP), and equivalent drain source resistance (RDS).