LM4040B25QFTA

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LM4040B25QFTA is a precision micropower voltage reference designed for applicatons that require low noise, low temperaturecoefficient, and high accuracy. It is used for voltage referencing and is suitable for use in precision test and measuremet equipment, commmunication applications such as transimpedance amplifiers, and power systems. The device can operate as a voltage reference in circuits that require either a single supply voltage or an adjustable voltage. It is available in a TO-92 package and is synthesized in an advanced SiGe BiCMOS process with a proprietary wrapper to provide precision performance.

The LM4040B25QFTA is a voltage reference that operates with a single supply. It features a low quiescent current of only 10 µA, a wide operating temperature range of – 40°C to 125°C, and an excellent thermal stability of only 0.008 mV/°C over its entire temperature range. The device has an inherently low noise and noise rejection of 4 µVrms on CN0 and 5 µVrms on RMS. Its output voltage is programmed to 5.000 V with an accuracy of 0.025%, making it ideal for precision applications. The device is rated for an output current of 25 mA, which is sufficient for many applications.

In operation, the LM4040B25QFTA uses a proprietary temperature-compensated band gap reference circuit to provide a stable voltage reference. The reference voltage is accurately set by the resistor divider connected to the REF pin. With this pin connected to the desired voltage reference, the Output pin provides the regulated voltage. The output voltage is guaranteed to be within the accuracy spec for temperatures up to 125°C, allowing for reliable operation in harsher environments.

The LM4040B25QFTA is a high performance voltage reference that is well suited for mobile, communications, instrumentation and power system applications. Its low power consumption and high accuracy make it ideal for precision and low-noise applications. It can operate with a single supply voltage, or with an adjustable voltage, and its low temperature coefficient ensures a high level of stability. With its high current rating and wide temperature range, it can meet the requirements of most applications.

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