REF3333AIDBZR – TEXAS INSTRUMENTS

The Texas Instruments REF3333AIDBZR is a precision, low-noise, 3.3V voltage reference in a tiny 6-pin SOT-23 package. It boasts a typical output voltage of 3.3V with a maximum output current of 10mA, offering excellent stability over temperature and time. The device exhibits a low initial accuracy of ±0.05% and a temperature coefficient of ±10ppm/°C, making it suitable for applications requiring high precision. Its low noise performance, specified as 10µVrms (0.1Hz-10Hz), minimizes interference in sensitive analog circuits._x000D_
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The REF3333AIDBZR utilizes a bandgap architecture for inherent stability and employs internal circuitry to minimize output impedance, ensuring stable operation even under varying load conditions. Common applications include precision analog-to-digital converters (ADCs), digital-to-analog converters (DACs), and instrumentation amplifiers where a highly stable and accurate voltage reference is critical. Its small form factor and low power consumption (typical 1.5mA) are advantageous in space-constrained and battery-powered designs. Unlike some alternatives, its wide operating temperature range (-40°C to +125°C) makes it robust for various environmental conditions. The device’s low output noise and high accuracy are key advantages over simpler, less precise voltage references.