ATH25 Data Sheet

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Version:V1.0 —— May 2021

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3.3 Electrical Characteristics

The power consumption given in Table 2 is related to temperature and supply voltage VDD.

Refer to Figures 6 and 7 for power consumption estimation. The curves in Figures 6 and 7 are

typical natural characteristics, and there may be deviations.

Figure 6. Typical supply current vs. temperature curve (sleep mode) when VDD=3.3V

Please note: There is a deviation of approximately ±25% between these data and the displayed value.

Figure 7. The relationship between current and voltage at 25℃

Please note: The deviation of these data from the displayed value may reach ±50% of the displayed value.

At 60℃, the coefficient is about 15 (Compared with table 2).

4 Applications

4.1 Welding Instructions

It is forbidden to use reflow soldering or wave soldering for soldering. The manual soldering

must be contacted for less than 5 seconds at the highest temperature of 300℃

Note: After welding, ATH25 need to be stored in the condition >75%RH for over 12 hours to

ensure the rehydration of the polymer. Otherwise, the output signal of the sensor will drift. The

sensor can also be placed in a natural environment (>40%RH) for more than 2 days to

rehydrate it. The use of low temperature solder (for example: 180°C) can reduce the hydration

time.