Application scheme of GXSC low-temperature drift precision voltage reference source GX30xx replacing REF30xx/MAX610x/ISL21080C in electronic loads

Electronic load is a device that consumes electrical energy by controlling the internal power or the flux of transistors, relying on the dissipated power of power transistors. In fields such as power testing, battery characteristic analysis, and chip aging screening, electronic load can simulate real loads and verify the power supply performance of devices. And a stable reference voltage serves as an "accuracy scale" to calibrate the control accuracy of load current and voltage. Guoxin Sichen‘s high-precision voltage reference chip, with its ultra-low temperature drift, high initial accuracy, and excellent load/line adjustment rate, can match the reference requirements in electronic loads.

The current/voltage control accuracy of electronic loads depends on the "initial accuracy" and "temperature stability" of the reference voltage. The voltage reference source GX30xx has the characteristics of low temperature drift (10ppm/° C), low power consumption, maximum initial accuracy of ± 0.2%, low operating current, and power consumption less than 125 μ A. It provides low output noise of 25 μ Vp-p/V, enabling it to maintain high signal integrity using high-resolution data converters in noise critical systems.

GX30xx is compatible with most products of ADC and DAC, and it offers a small SOT-23 package. The low output voltage hysteresis and low long-term output voltage drift of the device further improve stability and system reliability. In addition, the small size and low operating current (125 μ A) of GX30xx are advantageous for portable and battery powered applications. The main parameters are as follows:

Initial accuracy: ± 0.2% maximum

Temperature coefficient: 35ppm/° C maximum -40 ° C to 125 ° C

Working temperature range: -40 ° C to 125 ° C

Output current: ± 10mA

Low static current: 125 μ A

Ultra low zero load differential voltage: 200mV

Input voltage: 2.7~5.5V

Long term stability: 45ppm/1000 hours

Support 3pin SOT-23 package pins

In summary, the voltage reference source GX30xx has the advantages of high precision, low drift, and low noise, and can maintain stable reference voltage output under different working environments and load conditions, which helps to maintain the stability of current and voltage in testing equipment such as electronic loads.