LM4040A50IDBZR

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Voltage references are usually integrated circuits that produce a fixed output voltage when applied with an input voltage. PMIC voltage references, such as the LM4040A50IDBZR, are used in various applications where a stable, accurate, and repeatable reference voltage is required.

Applications

Lm4040A50IDBZR voltage references are used in various applications such as:

• Precision measurement systems
• Test and measurement equipment
• Automotive test solutions
• Instrumentation
• Power supplies
• Industrial control systems
• Computer peripherals
• Data storage systems
• Network communications

Features

The LM4040A50IDBZR voltage reference has a wide range of features, including:

• Extremely accurate voltage reference – ±0.01%
• High threshold voltage accuracy – ±1.0mV
• Excellent temperature stability – 0.05%/°C
• Low noise – 4.6µVRMS
• Low dropout voltage – 75µV at 1mA
• Fast warm-up time – 200ms
• Compact size and package – SOT-323
• Maximum current – 5mA
• Wide operating temperature range – -40°C to +125°C

Working Principle

The LM4040A50IDBZR is a bandgap voltage reference that operates on an external supply voltage. The IC consists of two precision voltage references connected in series, one producing an output voltage and the other an output voltage of half the value. The output voltage is determined by the ratio of two resistors, R1 and R2, connected to the inverting and non-inverting inputs of the IC, respectively. An internal clamping protection circuit ensures that the maximum output voltage is not exceeded when the input voltage is raised beyond the specified maximum value.

The LM4040A50IDBZR is a CMOS bandgap voltage reference, providing low temperature drift, low output noise and high accuracy over a wide operating temperature range of -40°C to +125°C. The input voltage range required to maintain full accuracy is 4.5V to 37V, with a maximum supply voltage of 70V. It has an adjustable current limiting feature for over-temperature or short circuit protection, and can be factory calibrated for additional accuracy.

Conclusion

The LM4040A50IDBZR is an ideal solution for applications requiring a precise, stable, and reliable voltage reference. It offers a wide range of features, such as high accuracy, low temperature drift, wide operating temperature range, and low output noise. It is suitable for use in a range of applications, from precision measurement systems and test and measurement equipment to automotive test solutions, industrial control systems, computer peripherals, data storage systems, and network communications.

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