Application of voltage reference source GX34xx against REF34xx/MAX6070/71A/ADR34xx in frequency converters

In the fields of industrial automation, smart grids, new energy vehicles, etc., frequency converters play a key role in energy conservation and improving equipment performance by precisely regulating motor speed by changing the power frequency in AC motors. However, frequency converters have extremely high requirements for the accuracy and stability of output voltage, and the voltage reference source is a key component that provides accurate voltage reference. This article mainly introduces a voltage reference source GX34xx PIN TO PIN replacement REF34xx/MAX6070/71A, which helps the frequency converter to operate reliably and achieve high-precision control.

The GX34xx has features such as low temperature drift (3ppm/° C), low power consumption, and high-precision CMOS. The device has an initial accuracy of ± 0.08%, low operating current, and power consumption of less than 125 μ A. It also provides an extremely low output noise of 15 μ Vp-p/V, enabling it to maintain high signal integrity of high-resolution data converters in noise critical systems. The GX34xx low temperature coefficient voltage reference source can maintain stable output over a wide temperature range (-40 ℃ to 125 ℃), making it suitable for industrial frequency converter applications.

GX34xx Performance Introduction:

• Initial accuracy: ± 0.08% (maximum value)

• Temperature coefficient: 3ppm/° C

• Operating temperature range: -40 ° C to 125 ° C

Output current: ± 10mA

Low static current: 125 μ A

• Ultra low zero load pressure difference: 200mV

• Input voltage: 2.7~5.5V

Output 1/f noise (0.1Hz to 10Hz): 15 μ Vp-p/V

Long term stability: 45ppm/1000 hours

• Supports small-sized package SOT-23 (6)

PIN TO PIN replaces REF34xx/MAX6070/71A/ADR34xx

In addition, the frequency converter requires a voltage reference source with long-term stability. In industrial environments, the frequency converter needs to operate continuously for several years, and the long-term drift of the voltage reference source is required to be less than 50ppm/year. The GX34xx voltage reference source can ensure long-term stability of the output voltage and avoid frequent calibration and maintenance.