Texas Instruments recommends a star-grounded layout with a solid ground plane, and placing the REF1112AIDBZRG4 close to the analog-to-digital converter (ADC) or digital-to-analog converter (DAC) it is supplying. Additionally, keep the input and output traces short and separate to minimize noise and coupling.
To ensure stability, make sure to decouple the input pin (VIN) with a 10uF capacitor to GND, and add a 10nF capacitor from the output pin (VOUT) to GND. Also, keep the output capacitor (CO) value between 10nF to 100nF, and avoid using tantalum or electrolytic capacitors which can cause oscillation.
The maximum allowed voltage on the input pin (VIN) is 18V, but it's recommended to keep it below 15V to ensure reliable operation and prevent damage to the device.
The REF1112AIDBZRG4 is rated for operation up to 125°C, but its accuracy and stability may degrade at high temperatures. It's recommended to derate the output voltage and current capabilities at high temperatures, and consider using a thermally-enhanced package or a heat sink to maintain a safe operating temperature.
The output voltage tolerance of the REF1112AIDBZRG4 is specified as ±0.5% over the operating temperature range. To calculate the output voltage tolerance, multiply the nominal output voltage (e.g., 2.5V) by the tolerance percentage (e.g., 0.5%). For example, the output voltage tolerance would be ±12.5mV for a 2.5V output voltage.
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About Texas Instruments
Texas Instruments (TI) designs and manufactures semiconductors and integrated circuits for a wide range of applications. The company's product portfolio includes analog chips, which are essential for managing power and signal functions in electronic devices, and embedded processors, which serve as the brains in various systems, enabling functionality in everything from industrial equipment to consumer electronics. TI's innovations in semiconductor technology have made it a leader in the industry.
