GXSC voltage reference source GX31xx compatible with REF31xx/MAX60xx applied in advanced driving assistance systems for automobiles

ADAS、 Precision data converters are required for automotive systems such as body electronics and powertrain. For each analog-to-digital converter, an accurate reference voltage is usually required when measuring car signals to minimize errors, so an external reference voltage is needed for more precise measurements.

Monitoring the voltage rails used in MCU/DSP/FPGA is crucial in advanced driver assistance systems (ADAS) for automobiles. By combining ADC and voltage monitor to independently monitor the voltage rail, ensure that the voltage rail does not exceed a certain voltage that may cause undervoltage or overvoltage events. Usually, these ADCs are located inside the microcontroller to ensure the proper functioning of the voltage rail. Connect an external voltage reference source to the MCU to ensure accuracy, and ensure that the internal ADC has a redundant reference voltage to ensure robustness.

The GXSC voltage reference source GX31xx 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. The voltage reference source GX31xx has a low operating current and power consumption of less than 125ua.

GX31xx is compatible with most ADCs and DACs and offers 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 the device are advantageous for mobile and battery powered applications.

Main features of GX31xx:

• 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

Can PIN TO PIN replace REF31xx/MAX60xx