Description:Voltage References Ultra-high-precision voltage reference with low noise and low drift,Series Voltage Reference IC Fixed 5V V ±0.025% 10 mA 8-LCCC (5x5)
Texas Instruments provides a recommended PCB layout in the REF7050QFKHT datasheet, which includes guidelines for component placement, routing, and thermal management. It is essential to follow these guidelines to minimize noise, ensure stability, and achieve the specified accuracy and temperature range.
The REF7050QFKHT has a relatively high output noise of 10 μVrms (typical) in the 0.1 Hz to 10 Hz frequency range. To minimize the impact of output noise, use a low-pass filter, such as a simple RC filter or a more complex active filter, to attenuate high-frequency noise. Additionally, consider using a noise-reducing capacitor (e.g., 10 nF to 100 nF) between the output pin and GND.
The maximum allowed input voltage for the REF7050QFKHT is 5.5 V. Exceeding this voltage can cause permanent damage to the device. It is essential to ensure that the input voltage remains within the specified range to maintain the device's accuracy, stability, and reliability.
The REF7050QFKHT has a soft-start feature that helps to minimize the inrush current during power-up. However, it is still essential to follow proper power sequencing guidelines to ensure that the device powers up and down correctly. Texas Instruments recommends powering up the device with a slow ramp (e.g., 1 ms to 10 ms) and powering down with a slow ramp or a gradual decrease in input voltage.
The REF7050QFKHT has a maximum junction temperature (TJ) of 150°C. To ensure reliable operation, it is essential to provide adequate thermal management, such as using a heat sink, thermal vias, or a thermally conductive PCB material. Additionally, ensure that the device is operated within the specified temperature range (-40°C to 125°C) and that the ambient temperature is within the recommended range.
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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.
