GXSC low-power voltage reference source GX3125 replaces REF3125 for medical equipment, with a temperature drift of 15ppm/° C

The voltage reference source mainly provides stable and reliable voltage or current reference for medical equipment, ensuring the accuracy and reliability of medical equipment. A reference source chip is an integrated circuit that can generate highly stable voltage or current, and its output voltage or current is not affected by external temperature, power supply voltage fluctuations, and other factors. This high stability makes the reference source chip a key component in ensuring circuit performance consistency in electronic devices. This article mainly introduces a GXSC voltage reference source chip GX3125 replacing REF3125 for medical equipment.

The high-precision characteristics of benchmark source chips enable medical devices to perform more accurate data collection and analysis. For example, in blood pressure monitoring devices, the stable voltage provided by the reference source chip ensures the accuracy of blood pressure measurement. The GX3125 voltage reference source has extremely low temperature drift (15ppm/° C maximum) and high accuracy (0.15% maximum), ensuring that the analog-to-digital converter can accurately convert analog signals into digital signals at different ambient temperatures.

In medical instruments, the reference source chip provides a stable reference voltage, which is the basis for ensuring measurement accuracy. For example, in the monitoring of physiological signals such as electrocardiogram and blood oxygen saturation, the stable voltage provided by the reference source chip ensures the accuracy of the measurement results.

GX3125 operates stably at 45ppm/1000 hours for a long time. This voltage reference source has a low operating current and power consumption of less than 125ua. The chip is compatible with most ADCs and DACs and provides a small SOT-23 package. The low output voltage hysteresis and low long-term output voltage drift of the device further improve the stability and reliability of the system.

In addition, the small size and low operating current (125ua) of GX3125 are advantageous for mobile and battery powered applications. By introducing benchmark source chips, circuits in medical devices can significantly reduce their sensitivity to external environments, thereby improving their anti-interference ability and stability. This is crucial for the long-term stable operation of medical equipment.

Main features of GX3125:

• Initial accuracy: ± 0.15% maximum value

• Temperature coefficient: 15ppm/° C, maximum -40 ° C to+125 ° C

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

Output current: ± 10mA

Low static current: 125ua

• Ultra low zero load drop voltage: 200mV

• Input voltage: 2.7~5.5V

Output 1/fn oise (0.1Hz to 10Hz): 15uVr-r/V

Long term stability: 45ppm/1000 hours