LM385BZ-2.5RAG

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PMIC - Voltage Reference is a device that typically provides a fixed voltage across its output pins. This fixed voltage can be used to power a circuit or as a reference voltage when measuring against other circuits. The LM385BZ-2.5RAG is one such voltage reference specific to the Texas Instruments family of integrated circuits. This article will cover its application field, features and working principle.

The LM385BZ-2.5RAG is a 1.2V to 36V adjustable voltage reference that can be used in variety of different application areas. It is mainly used in circuit designs where low noise is required such as audio and video amplification. It is also used in measuring instrumentation and high-precision voltage sensing. Additionally, it can be used in applications where low temperature coefficient and stability are necessary.

The LM385BZ-2.5RAG is a two-terminal adjustable voltage reference. It boasts of many features like low output and temperature coefficients, wide output range and high accuracy. It has an extremely low output noise with a maximum of 1.75μVp-p over a 10MHz bandwidth and a maximum temperature coefficient of 2.8ppm/°C. The LM385BZ-2.5RAG also has very low input bias and offset currents and has a low leakage current of 10pA at 40°C.

The working principle of the LM385BZ-2.5RAG is based on the Zener diode effect. Zener diodes are special types of diodes which when connected in the reverse bias configuration, will act as a voltage reference. The LM385BZ-2.5RAG consists of two Zener diodes in series connected to form a voltage divider network across which the adjustable output voltage can be obtained.

The current through the Zener diode causes it to breakdown and break the circuit. The current that passes through the amplifier sets the voltage across the Zener diode, which ultimately sets the output voltage. By adjusting the ratio of the two Zener diodes, the output voltage of the LM385BZ-2.5RAG can be adjusted to the desired voltage level.

The LM385BZ-2.5RAG has many advantages. First, it requires no external components for operation and provides a voltage reference that can be adjusted from a low 1.2V to a maximum of 36V. Second, it is extremely stable and has very low noise and temperatures coefficients. Finally, it has very low input leakage currents, allowing it to be used in high precision and low noise applications.

The LM385BZ-2.5RAG is a highly versatile and reliable adjustable voltage reference. It is mainly used in audio and video amplification, instrumentation and high-precision voltage sensing. It is an ideal choice for applications that require low noise and low temperature coefficient while maintaining a high degree of accuracy.

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