Texas Instruments recommends a star-ground connection, placing the REF35500QDBVR close to the analog-to-digital converter (ADC) or digital-to-analog converter (DAC), and using a low-impedance power supply. Additionally, keep the device away from high-current or high-frequency signals, and use a solid ground plane to reduce noise.
Use a low-ESR capacitor (e.g., 10uF) between the VCC and GND pins, and a smaller capacitor (e.g., 100nF) between the VCC and BYPASS pins. This helps to filter out noise and ensure a stable voltage supply. Additionally, use a low-dropout regulator (LDO) or a high-PSRR power supply to minimize power supply noise.
The typical output impedance of the REF35500QDBVR is around 0.5 ohms. This low output impedance ensures a stable voltage reference, but it also means that the device can source or sink a limited amount of current. Be sure to consider this when designing your circuit, and use a buffer amplifier if you need to drive a heavy load.
The REF35500QDBVR has a maximum operating temperature of 125°C. To ensure reliable operation, use a heat sink or a thermally conductive pad to dissipate heat. Keep the device away from heat sources, and consider using a temperature sensor to monitor the device temperature. Additionally, derate the device's performance according to the temperature derating curve provided in the datasheet.
The REF35500QDBVR has a higher accuracy (±0.05%) and a lower temperature coefficient (±1 ppm/°C) compared to the REF3425 (±0.1% and ±2 ppm/°C) and REF5025 (±0.1% and ±3 ppm/°C). The REF35500QDBVR also has a lower noise floor and a wider operating temperature range. Choose the REF35500QDBVR for high-precision, low-noise applications, and consider the other devices for more general-purpose or cost-sensitive designs.
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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.
