AS431IANTR-G1 Integrated Circuits (ICs)

PMIC - Voltage Reference

The AS431IANTR-G1 is a family of low-voltage CMOS voltage references designed for MCUs, as well as PDA and mobile phone applications. The device incorporates an integrated voltage regulator (VR), a reference voltage generator, and a temperature coefficient (TC) compensation. It has an onboard resistor-based voltage divider design and can be used for precision voltage adjustment.

Application Fields

The AS431IANTR-G1 is a cost-effective, low-power voltage reference that is suitable for use in mobile devices, mobile phones, PDAs and other microcontroller-based systems. It is an essential component for power system design, providing adjustable and stable references for low-voltage digital and analog circuits.

It can also be used for microprocessor-based systems to adjust the SSR, so that the microprocessor interfaces with other circuits in the system without unnecessary adjustments of the processor’s voltage.

Working Principle

The working principle of the AS431IANTR-G1 is based on a resistor-based voltage divider formed by the internal resistors. A desired reference voltage is introduced by adjusting the external reference voltage, and the internal resistors (R1 and R2) adjust the voltage divider to achieve the desired reference voltage.

The output voltage of the AS431IANTR-G1 is additionally temperature compensated. A built-in temperature compensating circuit that adjusts the reference voltage based on the ambient temperature ensures that the output voltage stays stable across all temperature ranges.

The AS431IANTR-G1 has a very low power consumption and operates within a wide voltage range of 2.7V to 6.5V. It is available in 3-pin SOP, TSSOP and SOT23 packages, with a maximum total output current of 8mA.

Conclusion

In conclusion, the AS431IANTR-G1 is a low-voltage CMOS voltage reference designed for use in MCUs, PDA and mobile phones. It has a built-in voltage regulator, reference voltage generator and temperature compensation, and is suitable for precision voltage adjustment. It operates within a wide voltage range and has a very low power consumption.