REF1112AIDBZRG4 datasheet by Texas Instruments

REF1112AIDBZRG4 Frequently Asked Questions (FAQs)

• What is the recommended PCB layout for optimal performance of the REF1112AIDBZRG4?
  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.
• How do I ensure the REF1112AIDBZRG4 is stable and does not oscillate?
  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.
• What is the maximum allowed voltage on the input pin (VIN) of the REF1112AIDBZRG4?
  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.
• Can I use the REF1112AIDBZRG4 in a high-temperature environment?
  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.
• How do I calculate the output voltage tolerance of the REF1112AIDBZRG4?
  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.