LM4040C41IDBZR Integrated Circuits (ICs)

The LM4040C41IDBZR is a voltage reference device that belongs to the line of precision micropower shunt voltage references developed by Texas Instruments. It is packaged in a small SOT-23 package and has a low operating current of 1.1 μA, which makes this device ideal for battery-powered and low quiescent current applications. This device provides an accurate and stable voltage reference, with a voltage accuracy of ±0.6% max at 10 V and a temperature coefficient of ±20 ppm/°C (max). The LM4040C41IDBZR also has an improved accuracy over temperature range – down to ±1.2% max at 10 V.

The LM4040C41IDBZR is designed for applications such as data converters, instrumentation, portable electronics, battery-powered systems, and others. It can be used to regulate and monitor battery voltages, to protect circuits from excessive power draw, to provide a reliable and consistent supply of power, and to ensure the accuracy of system components. The LM4040C41IDBZR can also be used in various monitoring and diagnostic applications, such as providing voltage reference points for system signals or for analog multimeter measurements.

The working principle of the LM4040C41IDBZR is based on a shunt voltage reference topology. The device consists of a reference voltage generator, two buffers, and output pins. Internally, the device is stabilised with a PNP bipolar transistor, which ensures a low temperature coefficient and high accuracy. The generated reference voltage is then buffered and divided by two to provide the single ended output voltage.

The output voltage of the LM4040C41IDBZR is adjustable by utilising the on-chip divider network. The adjustable output range is from 1.200 V to 19.800 V, when the reference voltage remains at 10V. The adjustment can be done using the adjustment pin, a sense resistor, and an external trim resistor. This adjustable range makes the device highly versatile for various applications.

In summary, the LM4040C41IDBZR is a precision micropower shunt voltage reference designed for applications where accuracy, stability, and low power are required. It comes in a small SOT-23 package, has an output range from 1.200 V to 19.800 V and a voltage accuracy of ±0.6% max at 10 V, with a low operating current of 1.1 μA. The LM4040C41IDBZR is suitable for use in data converters, instrumentation systems, battery-powered systems, and various monitoring and diagnostic applications.