LM4128CMF-4.1 Integrated Circuits (ICs)

Noise - 0.1Hz to 10Hz:	350µVp-p
Base Part Number:	LM4128
Supplier Device Package:	SOT-23-5
Package / Case:	SC-74A, SOT-753
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 125°C (TJ)
Current - Supply:	100µA
Voltage - Input:	4.496 V ~ 5.5 V
Noise - 10Hz to 10kHz:	--
Series:	--
Temperature Coefficient:	100ppm/°C
Tolerance:	±0.5%
Current - Output:	20mA
Voltage - Output (Min/Fixed):	4.096V
Output Type:	Fixed
Reference Type:	Series
Part Status:	Obsolete
Packaging:	Tape & Reel (TR)

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LM4128CMF-4.1 Application Field and Working Principle of Voltage Reference

A voltage reference, also known as a precision voltage reference, is an electronic component used to provide a stable and accurate reference voltage in circuits. It refers to the voltage at which low-voltage circuits operate. The LM4128CMF-4.1 is one of the most popular commercial voltage references designed and manufactured by Texas Instruments (TI). This article will discuss the application field and working principle of the LM4128CMF-4.1 voltage reference.The LM4128CMF-4.1 equipment is a combination of a fixed series register, a group of baseband transistors, and a switch mode current source. It is a monolithic voltage reference with a low output voltage range of 0.9 to 4.1 volts and is packaged in a surface mount miniature SOT-23 plastic package. It is specifically designed for use in voltage regulator, switch mode power supply, and other analog and digital systems.The reference output is referenced push-pull CMOS logic. It can provide a greater degree of accuracy and stability than other references due to the use of advanced circuit design techniques and high-performance component selection. It has a temperature coefficient of 0.035%/°C and a low initial stand-by quiescent current of 0.9mA, allowing the device to work efficiently even in low-power applications.In addition, the LM4128CMF-4.1 features good noise immunity and wide supply voltage, as well as protection against an accidental short-circuit to ground or VSS. The LM4128CMF-4.1 voltage reference also offers excellent reverse-current characteristics, low-temperature drift, and exceptional long-term stability.The LM4128CMF-4.1 voltage reference works by controlling the output voltage of the device. When the LM4128CMF-4.1 is connected to the power source, current flows through it and the series register. The base band transistors regulate the output voltage Based on the current. As soon as the voltage across the register reaches the predetermined reference voltage, the switch mode current source switches on and diverts the current, regulating the output voltage. The LM4128CMF-4.1 can be used as a precision reference for analog-to-digital conversion, voltage comparison and other applications.In conclusion, the LM4128CMF-4.1 is a precision voltage reference specially designed for use in low-voltage analog and digital circuits applications. It has a low voltage range of 0.9 to 4.1 volts, excellent noise immunity, and wide supply voltage. The LM4128CMF-4.1 also offers low-temperature drift and exceptional long-term stability. This voltage reference operates by controlling the output voltage of the device and its series register, and can be used for many applications.

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