REF200AUE4 datasheet by Texas Instruments

REF200AUE4 Frequently Asked Questions (FAQs)

• What is the recommended layout and placement for the REF200AUE4 to minimize noise and ensure accurate voltage reference?
  The REF200AUE4 should be placed close to the analog-to-digital converter (ADC) or digital-to-analog converter (DAC) it is referencing, with a low-impedance path to the power supply. The device should be decoupled with a 10nF capacitor between the VIN pin and GND, and a 100nF capacitor between the VOUT pin and GND. The layout should also minimize noise coupling from digital signals.
• How does the REF200AUE4 behave during power-up and power-down sequences?
  The REF200AUE4 has a built-in power-on reset (POR) circuit that ensures the output voltage is stable and accurate after power-up. During power-down, the device's output voltage will decay slowly, and the device will enter a low-power state to minimize current consumption.
• What is the impact of temperature on the REF200AUE4's accuracy and stability?
  The REF200AUE4 has a temperature coefficient of ±1 ppm/°C, which means that the output voltage will change by ±1 ppm for every 1°C change in temperature. The device is specified to operate over a temperature range of -40°C to 125°C, and the output voltage is guaranteed to be within ±0.05% of the nominal value over this range.
• Can the REF200AUE4 be used as a voltage reference for high-speed data converters?
  Yes, the REF200AUE4 is suitable for use as a voltage reference for high-speed data converters. The device has a low noise floor and a high power supply rejection ratio (PSRR), making it suitable for use in high-speed applications. However, the device's output impedance should be considered when designing the reference circuit.
• How does the REF200AUE4 compare to other voltage reference devices in terms of accuracy and stability?
  The REF200AUE4 has a high accuracy of ±0.05% and a low temperature coefficient of ±1 ppm/°C, making it suitable for use in high-precision applications. Compared to other voltage reference devices, the REF200AUE4 offers a good balance of accuracy, stability, and power consumption.