MAX6331SUR+T

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The MAX6331SUR+T is a voltage reference from the PMIC (Power Management IC) family, specifically from the Voltage Reference category. A voltage reference is an IC designed to produce a stable and accurate output voltage whatever the environmental or load conditions.

The MAX6331SUR+T is a 2.5V low-power voltage reference that uses a proprietary low-drift architecture, resulting in a high degree of accuracy—suitable and reliable for many industrial, automotive, and consumer applications. The reference comprises a CMOS core, providing superior noise rejection, coupled with a two-terminal low-drift Temperature-Drift compensated (TD) bandgap reference circuit.

The MAX6331SUR+T reference has a very high accuracy at ±0.21% (1.22mV typical) and a low temperature drift at ±25ppm/°C maximum. It offers a high immunity to output drift over time, load current, line voltage, and temperature; this ensures a very predictable output voltage in environments with significant fluctuations, often witnessed in industrial, automotive, and consumer applications.

The output voltage of the MAX6331SUR+T reference is designed so that it is always within ±10mV of the nominal value over an extended -40°C to +125°C temperature range. It is powered by a +2.7V to +5.5V DC power supply and is available in the 8-pin MSOP package. It also features a wide operating temperature range that extends down to −65°C, making it suitable for applications in extreme or unusual environmental conditions.

The MAX6331SUR+T reference provides an array of important features to guarantee highly accurate and stable output voltage under different conditions:

• Low-drift temperature-compensated (TD) bandgap reference
• Very low temperature coefficient of 0.2 mV/°C
• High accuracy of 0.21%
• Wide operating temperature range from –65°C to +125°C
• Suitable for a variety of applications
• CMOS core with low noise
• High immunity to output drift over time, load current, line voltage, and temperature
• Fast startup time
• 8-pin MSOP package

The MAX6331SUR+T is ideal for use in applications that require precision and stability, such as in the injection systems, power conversion, and monitoring and control of various systems. It can also be used in many automobiles, including in engine control systems and in lighting systems, as well as in other consumer products. The typical applications for this voltage reference include: automotive data acquistion, battery-powered instrumentation and monitoring,in-circuit voltage programming, voltage setpoint and supervisory detections, temperature/humidity/pressure measurements and data acquisition, and as a precision voltage reference for monitoring and controlling circuits.

In summary, the MAX6331SUR+T voltage reference is specifically designed to provide a high-accuracy, low-drift voltage reference for a wide range of industrial, automotive, and consumer applications. Its high accuracy, low-drift temperature compensation, and other desirable features make this voltage reference an attractive choice in many applications that require precision and stability.

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