ZRC250A01STOB

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Voltage references are essential components for many electronic designs. zRC250A01STOB is a high precision linear voltage reference developed by Diodes Incorporated. It is ideal for use in a wide range of application such as in digital-to-analog conversion, system power supervision, fault detection, etc.

Absolute Maximum Ratings

The following are the absolute maximum ratings of ZRC250A01STOB: Power Supply Voltage: 7.2V; Input Voltage: 7.2V; Output Voltage: 7.2V; Output Current: 15mA; Operating Temperature: -40°C to 125°C.

Application Field

ZRC250A01STOB is a high-precision linear voltage reference. It is particularly suitable for use in digital-to-analog conversion, system power supervision, fault detection and other applications. The maximum output current of ZRC100A01STOB is 15mA and the maximum power supply voltage is 7.2V.

ZRC250A01STOB has ultra low temperature coefficient and high precision output voltage with good stability over the temperature range from -40℃ to 125℃. It has a very low output voltage drift of less than 10ppm/°C. The output noise is also low, with a Two-terminal Noise Over 10Hz to 100kHz band less than 5ppm RMS expressed in peak-peak voltage. It is widely used as a reference source in microprocessor-based systems and other precision instrumentation.

Working Principle

ZRC250A01STOB is an integrated voltage reference, which consists of a voltage reference and a voltage follower. The voltage reference is a band-gap reference circuit, which makes use of the relationship between the temperature coefficient of the base-emitter junction voltage and the base current, to produce a voltage reference. The voltage follows then use a FET to provide a gain and buffer the reference voltage to the output.

The temperature coefficients of the ZRC250A01STOB are very low, with a temperature coefficient of less than 10ppm/°C and the output voltage is very noise resistant. Furthermore, the output voltage has a good linearity and accuracy over the temperature range from -40°C to 125°C.

This device has excellent line and load regulation, which allows PSRR to be as high as 97.8dB, thus greatly reducing the influence of power supply noise on the reference output. It also has low power consumption, normally consuming only around 1.6mA of current.

Conclusion

ZRC250A01STOB is a high precision linear voltage reference developed by Diodes Incorporated. It is especially suitable for use in digital-to-analog conversion, system power supervision, fault detection and other applications. It has very low temperature coefficient, output voltage drift, and output noise. It also has excellent line and load regulation and low power consumption.

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