MLX90240 Pressure Sensor IC Features and Benefits 0-350mBar Range Compact Design High Long Term Stability Low Cost Applications Medical Instrumentation (Blood Pressure) Consumer Appliances Sports Equipment Pressure Difference and Flow monitoring Ordering Information Part No. MLX90240 MLX90240 Temperature Suffix S S Functional Diagram 1 V EXC+ 1 V OUT+ 1 V EXC- Package CA UD Temperature Range -20C to 85C Industrial -20C to 85C Industrial Description The MLX90240 is a discrete micromachined pressure sensor IC suitable for pressure ranges between 0 to 350mBar. The pressure medium must be dry and non-corrosive, such as air. The 90240 is packaged in a plastic/ceramic package, (CA) or can be ordered as unpackaged die (UD) The principal of the circuit is a piezoresistive bridge which realized in silicon through a special micromachine process. As pressure is applied to the bridge, a differential voltage change is seen across the VOUT pins, while a bias voltage is applied to the VEXC pins. The MLX90240 is a versatile pressure sensor solution which can be directly interfaced with other Melexis ICs such as the MLX90308, which provides amplification, signal conditioning as well as the bias current to supply the sensor itself. 1 V OUT- MLX902xx Name of Sensor MLX90240 Pressure Sensor IC Rev Y.X 1 Page 22/Aug/98 Page 1 Rev 1.0 25/April/00 MLX90240 Pressure Sensor IC MLX90240 Electrical Specifications DC Operating Parameters TA = 25C, VDD = 5V, Pressure = 350mBar full scale. Parameter Min Typ Max Units Excitation voltage 0 5 12 V Offset -25 0 +25 mV TC of the Offset -15 -21 -25 µV/°C Sensitivity 43 58 71 mV/V/bar TC of the Sensitivity (1) -0.17 -0.21 -0.26 %/°C Bridge impedance 12 14 16 kOhm TC of the Bridge (1) 0.057 0.063 0.066 %/°C +/- 0.15 +/- 0.30 %FS Hysteresis 0.1 % FS Offset Long term stability (2) 0.5 %FS Sensitivity Long term stability (2) 0.3 % Non linearity (3) Burst pressure 5x FS pressure Operating Temp -20 85 °C Storage Temp -40 125 °C Notes: 1) 2) 3) 4) Between 0 and 70°C After: 100 thermos cycles 0 – 70°C 1 mil pressure cycles 0 – 350 mbar Typical 0.5% FS for 0-500 mbar range MLX90240 Pressure Sensor IC Page 2 Rev 1.0 25/April/00 MLX90240 Pressure Sensor IC Bridge Resistance versus Temperature Bridge Resistance versus Temperature MLX90240 14.8 14.6 Bridge Resistance in kOhm 14.6 Bridge Resistance in kOhm MLX90240 14.8 14.4 14.2 14.4 14.2 14 14 13.8 13.8 120 100 80 60 40 20 0 -20 120 100 80 60 40 20 0 -20 Temperature in o C Temperature in o C Sensitivity versus Temperature MLX90240 Pin Description MLX90240 60.5 Vexc+ pin 1 Sensitivity in mV/V/bar 60 Vout+ pin 2 56.6 Vexcpin 16 53.3 Voutpin 15 50 46.7 120 100 80 60 40 20 0 -20 Temperature in o C MLX902xx Name of Sensor MLX90240 Pressure Sensor IC Rev Y.X 3 Page 22/Aug/98 Page 3 Rev 1.0 25/April/00 MLX90240 Pressure Sensor IC “CA” Package Dimensions Top view Bottom view 0.170 0.300 0.030 0.250 sq 2 1 8 16 9 0.075 15 0.050 diam 0.030 diam 0.08 diam 0.028 0.060 0.300 0.085 0.340 Notes: 1) 2) All dimensions in inches. Maximum temperature during mounting is 220°C for 1 minute; solder composition is 63% tin and 37% lead. 0.025 0.122 Cross section For the latest version of this document, Go to our website at: www.melexis.com Or for additional information contact Melexis Direct: Melexis France Tour Arago, 5 rue Bellini, 92806 Puteaux-La-Défense, France. Phone: +33 1 47 78 11 34 Fax: +33 1 47 78 06 35 E-mail: [email protected] Italy USA Melexis Inc. 41 Locke Road, Concord, NH 03301 Phone: +1 603 223 2362 E-mail: [email protected] France Fax: +1 603 223 9614 Dimacred IRL Via Papa Giovanni XXIII no. 25, 20046 Biassono, Italy Phone: +39 039 249 4856 Fax: +39 039 491773 E-mail: [email protected] Japan United Kingdom Silicon Concepts PCB Lynchborough Road, Hampshire GU30 7SB, United Kingdom Phone: +44 1428 751 617 Fax: +44 1428 751 603 E-mail: [email protected] Germany Am Seestern 8, 40547 Düsseldorf, Germany Phone: +49 211 5360212 Fax: +49 211 5360250 E-mail: [email protected] MLX90240 Pressure Sensor IC Satori Electric Co., LTD 1-14-10 Shiba, Minato-Ku, Tokyo, Japan Phone: +81 3 3452 7171 Fax: +81 3 3769 2197 E-mail: [email protected] Taiwan Beechwood Int’l Taiwan Co. Room 8, 17F, No. 189, Taipei, Taiwan Phone: +886 2 2739 3322 E-mail: [email protected] Page 4 Fax: +886 2 2739 3090 Rev 1.0 25/April/00