MAX6033AAUT25#TG16

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MAX6033AAUT25#TG16 – Voltage Reference PMIC

A PMIC (Power Management Integrated Circuit), such as the MAX6033AAUT25#TG16, is an electronic device used to regulate and manage the power distribution of an electronic system. This device falls under the voltage reference PMIC classification which is used to provide a regulated and stable output reference. The MAX6033AAUT25#TG16 is a specifically designed Shunt Reference device primarily designed to provide a stable voltage reference for circuits requiring 2.5V and/or 3.3V, providing a low-drift and low-noise output that is necessary for high-accuracy analog/digital circuits. Additionally, it meets the requirements of various automotive and aerospace applications.

The Basics

A reference voltage is a setting that can be used to identify a stable voltage within a range of possible values provided by a reference circuit. A reference voltage is typically an industry standard value, such as 2V, 3V, 5V, etc. The MAX6033AAUT25#TG16 has two independent reference voltages that can be programmed to generate either a 2.5V or 3.3V reference voltage. These reference voltages are generated with a specified accuracy, typically stated in mV (or parts per thousand) and expressed as a ratio between the reference voltage and the actual voltage.

The MAX6033AAUT25#TG16

The MAX6033AAUT25#TG16 is built in a 16-pin NSOIC (Narrow Side-Drive Opto-coupler Isolated) package. It operates from an input voltage of 2.7V to 5.5V, with standby current typically only 2µA. It features both 2.5V and 3.3V adjustable reference outputs with ±0.2mV to ±2.5mV accuracy over temperature. It also offers a wide input voltage range and low operating current with a ±5ppm/°C max drift and very low noise. The device is available in both commercial and automotive versions, allowing temperatures ranging from -40°C to +125°C.

The Working Principle of The MAX6033AAUT25#TG16

The MAX6033AAUT25#TG16 uses a shunt-based topology in a voltage bandgap to provide a stable voltage reference under varying environmental conditions. The shunt topology, also known as a series-feedback topology, is commonly used to generate a reference voltage due to its high stability, accuracy, and low-noise performance over a wide temperature range. The reference voltage is generated by driving a resistor with a DC current and measuring the voltage across the resistor. This voltage is then converted into a reference voltage through a feedback loop and an error amplifier. The feedback loop is used to compare the reference voltage generated by the shunt topology to the required 2.5V or 3.3V reference voltage.

The Comparison With Traditional Voltage Reference Devices

The MAX6033AAUT25#TG16 offers a variety of advantages when compared to traditional voltage reference devices such as Zener diodes or linear regulators. Unlike Zener diodes, the MAX6033AAUT25#TG16 offers improved accuracy and stability, and a much larger temperature range. Additionally, it also offers much lower noise and faster response time. When compared to linear regulators, the MAX6033AAUT25#TG16 is much more efficient and has much lower output drift over temperature. This makes it ideal for applications such as precision voltage measuring, voltage regulation and supervisory circuits.

Conclusion

The MAX6033AAUT25#TG16 is a high-precision, low-noise voltage reference PMIC that can provide a very stable and accurate 2.5V or 3.3V reference voltage. This device is ideal for applications requiring high accuracy, stability and precision, such as precision voltage measuring, voltage regulation and supervisory circuits. Additionally, its ability to operate in both commercial and automotive grade temperature range makes it an attractive solution for automotive and aerospace applications.

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