The recommended PCB layout for the DS1845E-010 involves keeping the analog and digital grounds separate, using a solid ground plane, and placing the device close to the power supply. Additionally, it's recommended to use a 4-layer PCB with a dedicated layer for the analog signals to minimize noise and interference.
To ensure the accuracy of the temperature measurement, it's essential to calibrate the device using the CAL pin. The CAL pin allows the user to adjust the temperature reading to match the actual temperature. Additionally, the device should be operated within the recommended temperature range, and the thermal pad should be connected to a solid ground plane to minimize thermal resistance.
The DS1845E-010 can source up to 10mA and sink up to 20mA of current. However, it's recommended to limit the current to 5mA to ensure reliable operation and to prevent overheating.
The DS1845E-010 can be interfaced with a microcontroller using the I2C bus. The device has a 7-bit address, and the microcontroller can read the temperature data from the device by sending the appropriate commands and addresses. The device also has an interrupt pin that can be used to alert the microcontroller when the temperature exceeds a certain threshold.
The typical power-up time for the DS1845E-010 is around 10ms. However, this time can vary depending on the power supply and the system configuration. It's recommended to wait for at least 10ms after power-up before taking any temperature readings.
DS1845E-010 datasheet
by Maxim Integrated Products
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