GXSC voltage reference replacement ADR4520/4525/4540 applied to high-precision measuring equipment

The main value of high-precision measuring equipment lies in "quantitative accuracy" - whether it is the detection of physical quantities such as voltage, current, temperature, or the micro analysis of material composition, they all rely on stable and reliable reference standards. High precision measurement equipment generally faces three core challenges: firstly, reference benchmark drift caused by environmental temperature fluctuations, leading to measurement errors; Secondly, in weak signal measurement scenarios, reference noise can easily mask effective signals; Thirdly, in long-term continuous work, the decrease in benchmark stability affects measurement consistency. Traditional benchmark sources are difficult to meet high-end measurement needs due to issues such as large temperature drift, high noise, and significant long-term drift.

The GXSC high-precision low-temperature drift, low noise, and low-power voltage reference source is very compatible with the requirements of measurement equipment. Its absolute voltage accuracy can reach within ± 0.1%. In the temperature range of -40 ℃~125 ℃, the typical temperature drift is 10ppm/℃, and the extremely low-temperature drift version has a temperature drift as low as 3ppm/℃. When the output voltage is 2.048V, the 1/f noise voltage is 9 μ Vpp. Within the range of 0Hz~1KHz, the power suppression ratio can reach up to 60dB.

For measuring equipment that requires continuous operation, such as industrial online monitoring instruments and environmental monitoring stations, long-term drift of the reference voltage can lead to a gradual decrease in current output accuracy; Meanwhile, load changes may cause fluctuations in the reference voltage, affecting current stability. The operating voltage range of GXSC voltage reference source is 3.1V~5.5V, with a typical static operating current of 900 μ A and a maximum load current of ± 10mA. Its performance is far superior to traditional reference source chips.

Characteristics of GXSC voltage reference source:

10ppm/℃ ultra-low temperature float, as low as 3ppm/℃

The absolute accuracy of the initial voltage reaches ± 0.1%

0Hz~1kHz, 60dB power ripple suppression

0.1Hz~10Hz, 1/f noise as low as 9 μ Vpp

900 μ A low static current

± 10mA driving current

SOIC-8 Small Package

The rated protection level of ESD is 6kV (HBM)

PIN TO PIN replacement ADR4520/4525/4540