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STLM20DD7F Datasheet(PDF) 5 Page - STMicroelectronics |
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STLM20DD7F Datasheet(HTML) 5 Page - STMicroelectronics |
5 / 16 page STLM20 Description 5/16 1 Description The STLM20 is a precision analog output temperature sensor for low current applications where maximizing battery life is important. It operates over a –55°C to 130°C (grade 7) or –40°C to 85°C (grade 9) temperature range. The power supply operating range is 2.4V to 5.5V. The accuracy of the STLM20 is ± 1.5°C, at an ambient temperature of 25°C. The temperature error increases linearly and reaches a maximum of ±2.5°C at the temperature range extremes. The temperature range is affected by the power supply voltage. For the temperature grade 7 device, a power supply voltage of 2.7V to 5.5V, the temperature range extremes are +130°C and –55°C. Decreasing the power supply voltage to 2.4V changes the negative extreme to –30°C, while the positive remains at +130°C. The STLM20 has a maximum quiescent supply current of 8µA. Therefore, self-heating is negligible. Figure 1. Logic diagram 1. Pin 2 GND may be grounded or left floating (SC70-5 only). For optimum thermal conductivity to the PC board ground plane, it should be grounded. Figure 2. Connections (top view) 1. Pin 1 NC should be left floating or grounded. 2. Pin 2 GND may be grounded or left floating. For optimum thermal conductivity to the PC board ground plane, it should be grounded. Table 1. Signal names VCC Supply voltage GND Ground VOUT Output voltage NC No connect AI12252 VCC STLM20 GND(1) VOUT 1 VCC GND(2) NC(1) GND VOUT AI12253 2 3 5 4 SOT323-5(SC70-5) 1 VCC NC(1) GND VOUT AI12253_a 2 4 3 UDFN-4Lead |
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