Ultra-low current 2.4 V precision analog temperature sensor

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 2.4 V to 5.5 V. The maximum temperature accuracy of the STLM20 is ± 1.5 °C (±0.5 °C typ) at an ambient temperature of 25 °C and VCCof 2.7 V. 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 2.7 V to 5.5 V, the temperature range extremes are +130 °C and –55 °C (decreasing the power supply voltage from 2.7 V to 2.4 V changes the low end of the operating temperature range from –55 °C to –30 °C, while the positive remains at +130 °C).

The STLM20 has a maximum quiescent supply current of 8 μA. Therefore, self-heating is negligible.

Key Features

  • Precision analog voltage output temperature sensor
  • ±1.5 °C maximum temperature accuracy at 25 °C (±0.5 °C typical)
  • Ultra-low quiescent supply current: 4.8 μA (typ) and 8.0 μA (max)
  • Operating voltage range: 2.4 V to 5.5 V
  • Operating temperature range: –55 °C to 130 °C (grade 7) –40 °C to 85 °C (grade 9)
  • SOT323-5L 5-lead package
  • UDFN-4L 4-lead package

Design

Technical Documentation

Product Specifications
Description Version Size
DS4810 DS4810: Ultra-low current 2.4 V precision analog temperature sensor 13.1 414 KB
Application Notes
Description Version Size
AN2648 AN2648: Increasing the resolution of analog temperature sensors 1.4 161 KB
AN4071 AN4071: Introduction to comparators, their parameters and basic applications 1.0 482 KB
User Manuals
Description Version Size
UM0442 UM0442: Multiple application platform based on STR750FV2 1.0 761 KB
Support & Community

Sample & Buy

Part Number Package Packing Type Operating Temperature (°C) (min) Operating Temperature (°C) (max) Marketing Status Unit Price (US$) * Quantity ECCN (EU) ECCN (US) Country of Origin More info Order from ST Order from Distributors
STLM20DD9F UFDFPN 4 1x1.3 Tape And Reel -40 85 Active - - NEC EAR99 THAILAND MORE INFO DISTRIBUTOR AVAILABILITY
STLM20W87F SOT323-5L Tape And Reel -55 130 Active - - NEC EAR99 THAILAND MORE INFO DISTRIBUTOR AVAILABILITY
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(*) Suggested Resale Price per unit (USD) for BUDGETARY USE ONLY. For quotes, prices in local currency, please contact your local ST Sales Office  or our Distributors

Quality & Reliability

Part Number Marketing Status Package Grade RoHS Compliance Grade Material Declaration**
STLM20DD9F ActiveUFDFPN 4 1x1.3IndustrialEcopack2 0 0
STLM20W87F ActiveSOT323-5LIndustrialEcopack2 0 0
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(**) The Material Declaration forms available on st.com may be generic documents based on the most commonly used package within a package family. For this reason, they may not be 100% accurate for a specific device. Please contact our sales support for information on specific devices.

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