1 / 19

SMT 160 – 30

SMT 160 – 30. SMART TEMPERATURE SENSOR. World ’ s first digital temperature sensor since 1991. SMT 160 – 30. Smart temperature sensor. A one chip solution for. Temperature measurement. Calibrated and Digitised. A real cost saving solution. SMT 160 – 30. Features:.

aulani
Download Presentation

SMT 160 – 30

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript


  1. SMT 160 – 30 SMART TEMPERATURE SENSOR World’s first digital temperature sensor since 1991

  2. SMT 160 – 30 Smart temperature sensor A one chip solution for Temperature measurement Calibrated and Digitised

  3. A real cost saving solution SMT 160 – 30 Features: Short design-in time Replace hardware by software Easy testing of PC-boards No EMC precautions needed

  4. Only digital transport No corrections and adjustments Simple (standard) software Very little PCB surface SMT 160 – 30 Short design in time

  5. Duty-cycle analogue signal structure Very high resolution < 0.005ºC digital signal noise!! Only ratio no Crystal reference needed SMT 160 – 30 Accuracy and resolution Calibrated on chip level

  6. software examples Our WWW interface boards for 8 temperature sensors Ask your distributor special support for your application SMT 160 – 30 Available tools for quick design-in

  7. SMT 160 – 30 Where used? Some applications: professional ovens and measuring instruments (HP) thermal management in power supplies (trains) space

  8. SMT 160 – 30 Where used? other applications: solar panel thermal management systems undersea cable amplifiers climate control and many more

  9. Technical aspects SMT 160 – 30

  10. many encapsulations high accuracy very high resolution SMT 160 – 30 Features:

  11. TO220 TO18 HE (8x2.5 mm) SOIC TO92 PRESENTLY AVAILABLE ENCAPSULATIONS SMT 160 – 30

  12. Inside the sensor-chip Vcc calibration i OUT T2 T1 i C PTAT GND D.C.=T1/T2 PTAT element is temperature dependent PTAT = Proportional To Absolute Temperature SMT 160 – 30

  13. Functional description Digital interpretation Sensor output Vcc (T1/T2)-0.320 Temp = ------------------ [ºC] 0.00470 T2 Analogue Interpretation T1 Low pass filtering D.C.=T1/T2 T1 Vout = Vcc * ----- T2 R C V SMT 160 – 30

  14. Sensor output Vcc T2 T1 SMT 160 – 30 Why Duty Cycle? - no need for Crystal reference only ratio between up and total period contains information - performance check If there is a pulse, sensor is correct if not, sensor defect - easy to simulate for test-purposes

  15. SMT 160 – 30 Sensor output standard totem pole output excellent protection against EMC max 10 metres of cable (shielded!) 1 km with digital interface driver

  16. Trigger level of micro T3  T1 due to cable capacitance T3 T1 SMT 160 – 30

  17. Sensor output duty cycle linear with temperature Formula: D.C.= 0.320 + 0.00470*T D.C.=0 T= -68.1 ºC D.C.=1 T= 144.7 ºC SMT 160 – 30

  18. SMT 160 – 30 Sensor Temperature Microcontroller A demonstration to show Accuracy Resolution

  19. Thank you for your attention Ask for a demonstration tel +31 76 520 53 53 SmartecNL@compuserve.com

More Related