The recommended PCB layout for the DS1845B-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 placed in a thermally conductive environment, and the temperature sensor should be isolated from any heat sources or thermal gradients.
The maximum operating temperature range for the DS1845B-010+ is -40°C to +125°C. However, the device can measure temperatures up to +150°C with reduced accuracy. It's essential to ensure that the device is operated within the recommended temperature range to maintain its accuracy and reliability.
The DS1845B-010+ can be interfaced with a microcontroller using the I2C bus. The device has a 7-bit address, and the user can select one of eight possible addresses using the A0, A1, and A2 pins. The microcontroller can read the temperature data from the device using the I2C bus, and the data is available in 12-bit or 14-bit format.
The power consumption of the DS1845B-010+ depends on the operating mode. In normal operation, the device consumes around 1.5mA. In shutdown mode, the power consumption is reduced to around 1μA. The device also has a low-power mode that consumes around 0.5mA.
DS1845B-010+ datasheet
by Maxim Integrated Products
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