LM4128DMF-2.0/NOPB

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The LM4128DMF-2.0/NOPB is a monolithic voltage reference designed to provide a 2.0V reference and designed to operate over an extended range of temperature. This device is classified as a PMIC, or Power Management Integrated Circuit, and is primarily used as a voltage reference. This article will discuss the LM4128DMF-2.0/NOPB’s application field and working principle.

Applied in many fields, the LM4128DMF-2.0/NOPB has applications as a voltage reference in test and control instruments, as a precision supply voltage for power converters, and as a voltage reference for temperature sensors. This type of voltage reference offers excellent accuracy, stability, and low drift over temperature changes. It is able to provide constant output voltage over an extended temperature range without the need for trimming or adjustments, making it ideal for applications that require high precision and a wide operating temperature range.

The device has a wide input voltage range and a low impedance, making it very versatile. The low impedance allows the device to hold a voltage onto its output even in the presence of varying loads. This also eliminates the need for additional components such as capacitors and resistors to maintain a stable output.

The LM4128DMF-2.0/NOPB uses a low-dropout voltage reference topology. This topology, commonly referred to as LDO, takes advantage of the voltage level shifting capabilities of the P-type or NMOS device. This design provides improved accuracy, quiet performance, and low-noise output. The internal voltage reference is also buffered using an internal op-amp. This buffering minimizes the effect of load current variations and also provides noise gain control.

The LM4128DMF-2.0/NOPB utilizes a unique way of regulating its output voltage. This device does not use a fixed internal reference voltage like most other voltage reference devices. Instead, it uses a charging scheme to adjust the output voltage. This scheme involves charging a capacitor with a sense resistor and then adjusting the output voltage by adjusting the resistance of the sense resistor.

The device also features a temperature compensation circuit. This circuit senses temperature changes and compensates for temperature effects on the output voltage. This allows the reference voltage to remain accurate over a wide temperature range.

The LM4128DMF-2.0/NOPB is an excellent voltage reference for applications requiring accurate voltage references over an extended temperature range. It is easy to use, with its low impedance, wide input voltage range, and temperature compensation features. It is an ideal solution for applications requiring high accuracy and reliability.

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