REF02APG4 datasheet by Texas Instruments

REF02APG4 Frequently Asked Questions (FAQs)

• What is the recommended layout and placement for the REF02APG4 to minimize noise and ensure optimal performance?
  The REF02APG4 should be placed close to the analog-to-digital converter (ADC) or digital-to-analog converter (DAC) it is supplying, and the output capacitor should be placed as close to the REF02APG4 as possible. The input and output pins should be routed away from noisy digital signals and power supply lines. A solid ground plane and a low-impedance power supply are also recommended.
• How do I ensure the REF02APG4 is stable and does not oscillate?
  To ensure stability, the REF02APG4 requires a minimum output capacitance of 10uF, and the output capacitor should be a low-ESR type. The device should also be decoupled from the power supply with a 0.1uF capacitor. Additionally, the PCB layout should be designed to minimize parasitic inductance and capacitance.
• What is the maximum allowed voltage on the input pin of the REF02APG4?
  The maximum allowed voltage on the input pin of the REF02APG4 is 18V. Exceeding this voltage can cause damage to the device.
• Can I use the REF02APG4 as a voltage reference for multiple ADCs or DACs?
  Yes, the REF02APG4 can be used as a voltage reference for multiple ADCs or DACs, but the total output current should not exceed the maximum rating of 10mA. Additionally, the output impedance of the REF02APG4 should be considered when designing the system, as it can affect the accuracy of the voltage reference.
• How does the REF02APG4 behave during power-up and power-down sequences?
  The REF02APG4 has a built-in power-on reset (POR) circuit that ensures the output is in a high-impedance state during power-up and power-down sequences. The device also has a soft-start feature that limits the inrush current during power-up.