Texas Instruments recommends a star-ground connection, with the REF3325AIDCKRG4 placed close to the analog-to-digital converter (ADC) or digital-to-analog converter (DAC), and using a low-impedance power supply. Additionally, a 0.1 μF decoupling capacitor should be placed between the VCC and GND pins, and a 10 μF capacitor between the VOUT and GND pins.
The REF3325AIDCKRG4 has a built-in power-on reset (POR) circuit that ensures a stable output voltage during power-up. When VCC rises above 1.5 V, the POR circuit resets the internal circuitry, and the output voltage stabilizes within 10 ms. During power-down, the REF3325AIDCKRG4's output voltage decays rapidly to prevent any unwanted voltage transients.
The thermal impedance of the REF3325AIDCKRG4 is typically 30°C/W. This means that for every 1 W of power dissipation, the junction temperature will rise by 30°C. To ensure optimal performance, it's essential to provide adequate heat sinking and thermal management to keep the junction temperature below 125°C.
The REF3325AIDCKRG4 is specified to operate from -40°C to 125°C. However, the device's accuracy and stability may degrade at higher temperatures. For applications above 85°C, Texas Instruments recommends using the REF3325AIDCKRG4 with a reduced output current to minimize self-heating and ensure reliable operation.
The REF3325AIDCKRG4 has a built-in brownout detection circuit that monitors the input voltage. If the input voltage drops below 1.5 V, the device's output voltage will decay rapidly to prevent any unwanted voltage transients. When the input voltage recovers, the REF3325AIDCKRG4 will re-start and stabilize its output voltage within 10 ms.
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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.
