ZHT431C02L

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A voltage reference is a device used to provide a known reference voltage for other circuitry. The ZHT431C02L device is a high precision, low-noise, small-size voltage reference used typically in applications in which analogue-to-digital converters or data converters need precise voltage references. It has an output voltage of 2.5V, internal adjust pin and overvoltage protection that make it suitable for a wide range of applications.

The ZHT431C02L device has a built-in current sink and a reference output with an accuracy of ±0.25%. It is made of the very best quality components and is available in a 3-pin TO-92 package which makes it ideal for space-restricted applications. In addition, the device contains two resistors at its inputs directly coupled to the two-inputs, making it uniquely suited as a master voltage reference.

The device operates with an input voltage of 1.7V to 12V, and its output voltage range is 0.25V to 11.75V. It has a typical temperature coefficient of 10ppm/°C and a low power dissipation of 370uW, which makes it well suited for battery applications. The device supports a maximum operating temperature range of -40°C to 85°C. The output current of the device is limited to 10mA, with a typical voltage accuracy of 2.5V and a typical noise level of 50µV.

The ZHT431C02L device is primarily used in low voltage systems and applications requiring precise voltage references such as motor control, analogue-to-digital converters, data converters, and power management. The device also offers protection against overvoltage spikes that might damage other electronic components in a circuit. Its small size and low current consumption make it suitable for use in portable and sensor applications.

The device relies on three circuit components: a reference voltage source, a reference voltage output, and an adjustable voltage divider. The reference voltage source (VREF) produces a stable voltage, which is applied to the reference voltage output. The adjustable voltage divider consists of two resistors, one at the input of the reference and one at the output. By adjusting the values of the resistors, the output voltage of the device can be fine-tuned. This allows for precise voltages, both when a device is powered up from cold or when the ambient temperature changes. With the partially adjustable voltage reference, all that is necessary for precise voltage output is to adjust the resistor values in the voltage divider, allowing the device to produce an output voltage that is precise and stable.

The ZHT431C02L device is easy to use and reliable. It offers a range of features and benefits that make it a preferred choice for many electronic applications. In addition to its high precision and low noise, its low-power consumption, small size, and overvoltage protection make it ideal for use in applications such as motor control, analogue-to-digital converters, data converters, and power management.

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