Feature
- Cost-effective alternative tothermistors
- Tight accuracy across a wide temperature range:
- ±2.5°C (maximum): –40°C to +150°C (TMP235)
- ±2.5°C (maximum): –10°C to +125°C (TMP236)
- Available in two accuracy levelvariants:
- A2 level: ±0.5°C (typical)
- A4 level: ±1°C (typical)
- Positive slope sensor gain, offset (typical):
- 10 mV/°C, 500 mV at 0°C (TMP235)
- 19.5 mV/°C, 400 mV at 0°C (TMP236)
- Wide operating supply voltage range:
- 2.3 V to 5.5 V (TMP235)
- 3.1 V to 5.5 V (TMP236)
- Short-circuit protected output
- Low power: 9 μA(typical)
- Strong output for driving loads up to 1000 pF
- Available packageoptions:
- 5-pin SC70 (DCK) surface mount
- 3-pin SOT-23 (DBZ) surfacemount
- Footprint compatible withindustry-standard LMT8x-Q1 and LM20 temperature sensors
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DescriptionThe TMP23x devices are a family of precision CMOS integrated-circuit linear analogtemperature sensors with an output voltage proportional to temperatureengineers can use in multiple analog temperature-sensing applications.These temperature sensors are more accurate than similar pin-compatibledevices on the market, featuring typical accuracy from0°C to +70°C of ±0.5°C.The increased accuracy of the series is designed for many analogtemperature-sensing applications.The TMP235 device providesa positive slope output of 10 mV/°C over the full –40°C to +150°C temperature range and a supplyrange from 2.3 V to 5.5 V. The higher gain TMP236 sensor providesa positive slope output of 19.5 mV/°C from –10°C to +125°C and a supply range from 3.1 V to 5.5V.
The 9-μA typical quiescent current and 800-μs typical power-on time enable effectivepower-cycling architectures to minimize power consumption for battery-powered devices. A class-ABoutput driver provides a strong 500-μA maximum output to drive capacitive loads up to 1000 pF andis designed to directly interface to analog-to-digital converter sample and hold inputs. Withexcellent accuracy and a strong linear output driver, the TMP23xanalog output temperature sensors are cost-effective alternatives to passive thermistors.
