REF5045IDGKT Integrated Circuits (ICs)

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A voltage reference is a device used in electrical circuits to provide stable, consistent, and highly accurate reference voltages regardless of the changes in input voltage, temperature, or load. Voltage references are most often used for precision measurement and control devices such as instrumentation amplifiers, analog-to-digital converters (ADCs), and digital-to-analog converters (DACs). The REF5045IDGKT is a precision voltage reference manufactured by Texas Instruments.

The REF5045IDGKT voltage reference is available in a wide range of package types, including SOT-23, TSSOP-8, and MSOP-8. It has an industry-leading temperature coefficient of 7.5ppm/°C, and a wide operating temperature range of -40°C to +125°C. The device has a 0.2mA substrate current and is designed to drive up to 20mA of load current, making it suitable for both single-ended and differential-mode applications.

The REF5045IDGKT offers ±0.05% initial accuracy, which makes it well-suited for industrial, medical, consumer, and instrumentation applications. This excellent accuracy is achieved through the use of tightly matched active and passive elements, as well as an integrated temperature and current compensation circuit. The device offers a low output impedance, which ensures that the output voltage is highly stable over the entire operating range.

The REF5045IDGKT voltage reference features an internal power-on reset circuit that guarantees a valid output voltage when power is initially applied. It also features short-circuit protection and ESD protection, and is compliant with the AEC-Q100 automotive transistor qualification standard. The device has a low dropout voltage rating, which ensures that it can still maintain the output voltage when the input voltage is approaching the minimum level.

The REF5045IDGKT voltage reference is designed to operate in a wide range of applications, including automotive and industrial systems, signal conditioning, controllers, test and measurement equipment, sensor systems, instrumentation and medical devices. It is also widely used in applications where the noise performance of the reference output must be very high, including those that require strict multiloop voltage regulation, low noise precision DC power supplies, and instrumentation systems.

The REF5045IDGKT voltage reference operates using a simple two-wire design with a common-mode feedback voltage that ensures the device has high linearity and temperature stability. Under normal conditions, the device will source current in order to maintain the output voltage constant. When the output voltage increases above the reference voltage, the device will source current to reduce it back to the reference voltage. If the output voltage becomes too low, the device will sink current in order to increase it back to the reference voltage. This ensures that the output voltage remains highly stable and accurate regardless of the changes in input voltage, temperature, or load.

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