MAX6126A41+

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MAX6126A41+ Application Field and Working Principle¹

The MAX6126A41+ is a precision voltage reference belonging to the voltage reference product family of PMIC - Voltage Reference. The device offers an accurate 2.5V reference output with ±25mV low temperature drift performance over the temperature range of -40°C to +105°C, operating from a ±2.5V supplies. The output available from this device is guaranteed to be accurate to within ±0.3mV, with an accuracy of ±10ppm/°C.

The MAX6126A41+ features a wide variety of features that make it ideal for high voltage, low voltage and harsh environment applications. These features include:

• High precision output: The MAX6126A41+ offers high accuracy, low temperature drift, high output impedance accuracy and low temperature coefficient.
• Low noise: The MAX6126A41+ offers low output voltage noise of only 2µVrms.
• High stability: The MAX6126A41+ is stable over extended temperature range.
• Wide supply range: The MAX6126A41+ operates from a ±2.5V supply.

The MAX6126A41+ is ideal for a wide range of applications including industrial control system, medical instruments, consumer electronics, automotive, and other applications that require a highly accurate and stable reference voltage.

Working Principle

The MAX6126A41+ uses a common emitter configuration, with an integrated resistor and an NPN bipolar transistor. The reference voltage output is achieved by means of a common collector current source. The NPN bipolar transistor is biased with an adjustable current reference, while the output voltage is controlled by the precise resistor. The adjustable current reference is the primary means of controlling the output voltage.

The resistive divider is used to provide feedback for the current source, which then ensures that the output voltage is precise and stable. Additionally, the output voltage is compensated for temperature changes. The MAX6126A41+ is designed to maintain a high degree of accuracy over a wide range of temperature, since the precise resistor and tightly regulated current source are used to generate the reference voltage.

The MAX6126A41+ offers very low noise and temperature stability over the operating temperature range, making it an ideal choice for precision measurement applications. The output of this device is also isolated from any external noise sources and has a turn-on time of less than 1µs.

conclusion

The MAX6126A41+ is an ideal voltage reference for a wide range of demanding applications, due to its high precision, low noise, and excellent temperature stability. It is ideal for use in industrial control systems, medical instruments, consumer electronics, automotive, and other applications that require a precise and stable reference voltage. With its precise resistor and tightly regulated current source, the MAX6126A41+ provides an accurate 2.5V reference output with ±25mV low temperature drift.

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