The DS1834AS+ requires careful layout and placement to ensure proper operation. It is recommended to place the device close to the battery, use a solid ground plane, and keep the input and output traces short and wide to minimize noise and voltage drops.
To ensure accurate temperature measurement, it is essential to calibrate the device, use a high-accuracy voltage reference, and minimize thermal gradients on the PCB. Additionally, the device should be placed in a thermally stable environment, away from heat sources and air flows.
The recommended power-up sequence is to first apply the battery voltage (VBAT) and then the input voltage (VIN). This ensures that the device powers up correctly and avoids any potential latch-up conditions.
The reset pin (RST) should be tied to a pull-up resistor and a capacitor to ensure a clean reset signal during power-up and power-down. This prevents the device from malfunctioning or entering an unknown state.
To minimize power consumption, it is recommended to use a low-power voltage reference, reduce the switching frequency, and optimize the power-up and power-down sequences. Additionally, consider using a low-power mode or shutdown mode when the device is not in use.
DS1834AS+ datasheet
by Maxim Integrated Products
