Maxim Integrated provides a recommended PCB layout in the DS2777G+T&R evaluation kit documentation, which includes a layout guide and Gerber files. It's essential to follow this layout to ensure proper thermal performance and minimize noise coupling.
The thermal resistance of the DS2777G+T&R can be calculated using the junction-to-ambient thermal resistance (RθJA) and the junction-to-case thermal resistance (RθJC) provided in the datasheet. You can use the following formula: RθJA = RθJC + (RθCS + RθSA), where RθCS is the case-to-spreadsheet thermal resistance and RθSA is the spreadsheet-to-ambient thermal resistance.
Although the datasheet specifies a recommended operating voltage range of 2.7V to 5.5V, the absolute maximum rating for the VCC pin is 6.5V. However, it's essential to note that operating the device at voltages above 5.5V may affect its reliability and performance.
The DS2777G+T&R is rated for operation up to 125°C, but its performance and accuracy may degrade at higher temperatures. It's essential to consider the device's thermal limitations and ensure proper heat sinking and cooling in high-temperature applications.
Maxim Integrated provides a troubleshooting guide in the DS2777G+T&R datasheet, which covers common issues and their solutions. Additionally, you can contact Maxim's technical support team for further assistance and guidance.
DS2777G+T&R datasheet
by Maxim Integrated Products
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