The recommended layout and routing for the DS1867-100+ involves keeping the analog and digital grounds separate, using a solid ground plane, and minimizing the length of the traces between the device and the capacitors. It's also important to keep the device away from high-frequency noise sources and to use a low-ESR capacitor for the VCC bypass.
To ensure the accuracy of the DS1867-100+'s voltage output, it's essential to use high-precision resistors for the voltage-setting resistors (R1 and R2), keep the device at a stable temperature, and minimize the noise on the VCC and GND pins. Additionally, the output voltage should be filtered using a low-pass filter to reduce noise and ripple.
The maximum capacitive load that the DS1867-100+ can drive is not explicitly stated in the datasheet, but it's generally recommended to keep the capacitive load below 10nF to ensure stability and prevent oscillations. However, the actual capacitive load limit may vary depending on the specific application and layout.
The DS1867-100+ is rated for operation up to 125°C, but its performance and accuracy may degrade at high temperatures. It's essential to consider the device's thermal characteristics and ensure proper heat sinking and thermal management in high-temperature applications.
To troubleshoot issues with the DS1867-100+, start by verifying the device's pin connections and voltage supplies. Check for noise and ripple on the VCC and GND pins, and ensure that the output voltage is within the specified range. Use an oscilloscope to monitor the output voltage and look for signs of oscillation or instability. Consult the datasheet and application notes for guidance on troubleshooting specific issues.
DS1867-100+ datasheet
by Maxim Integrated Products
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