SCC Series Pressure sensors FEATURES GENERAL DESCRIPTION · 0...5 to 0...100 psi · Low cost sensor element · Internal temperature compensation · Differential, gage and absolute APPLICATIONS · Pneumatic controls · Automotive diagnostics · Medical equipment · Dental equipment · Environmental controls EQUIVALENT CIRCUIT The SCC series offer an extremely low cost sensor element with a temperature stable output when driven with a constant current source. These integrated circuit sensors were designed for extremely cost sensitive applications where precise accuracy over a wide temperature range is not required. This series is intended for use with non-corrosive, non-ionic working fluids such as air and dry gases. Absolute devices have an internal vacuum reference and an output voltage proportional to applied pressure. The differential devices allow application of pressure to either side of the diaphragm and the devices are thereby available to measure both differential and/or gage pressures. Scale: This product is packaged either in SenSym's standard low cost chip carrier "button" package, a plastic ported "N" package or a dual inline package (DIP). All packages are designed for applications where the sensing element is to be integral to the OEM equipment. These packages can be o-ring 1 cm ½ inch sealed, epoxied, and/or clamped onto a pressure fitting. A closed bridge 4-pin SIP configuration is provided for electrical connection to the button package. The DIP package offer a 5-pin open bridge configuration. ELECTRICAL CONNECTION Vs GND out + +VS out - + 1 2 3 P1 4 Output SCC.. button sensor Button Sensor or "N" Package +Vs Vs 1 P2 +Vs 4 out + out - GND GND out - out + 1 +Vs P1 out + GND 4 +Vs out - +Vs 1 P1 P2 4 +Vs vent hole - SCCxxxGD2 DIP SCCxxxAD2 DIP SCCxxxD4 DIP Output + DIP Package July 2005 / 040 The polarity indicated is for pressure applied to SCC.../SCC...N : P1 (forward gage) SCC...GD2 : P2 (backward gage) SCC...ASO/GSO : P1 (forward gage) SCC...AD2 : P1 (forward gage) SCC...DD4 : P2 (backward gage) 1/5 www.sensortechnics.com SCC Series Pressure sensors PRESSURE SENSOR CHARACTERISTICS Maximum ratings (for all devices) Supply current, IS 1.5 mA Temperature ranges Compensated Operating Storage 0 to +50°C -40 to +85°C -55 to +125°C Humidity 0 to 100 %RH Lead temperature (soldering 4 sec.) Common-mode pressure 250°C 150 psi PERFORMANCE CHARACTERISTICS (individual models) IS = 1.0 mA, TA = 25°C1 Part number SCC05(D,G) SCC15A SCC15(D,G) SCC30A SCC30(D,G) SCC100A SCC100(D,G) Operating pressure range Proof pressure9 0 - 5 psid(g) 0 - 15 psia 0 - 15 psid(g) 0 - 30 psia 0 - 30 psid(g) 0 - 100 psia 0 - 100 psid(g) 20 psi 30 psia 30 psi 60 psia 60 psi 150 psia 150 psi Accuracy2 0.50 0.50 0.50 0.50 0.50 0.50 0.50 % % % % % % % Effect on span3 (0 - 50°C) 1.50 1.50 1.50 1.50 1.50 1.50 1.50 Effect on offset4 (0 - 50°C) % % % % % % % 2.00 2.00 2.00 2.00 2.00 2.00 2.00 % % % % % % % Full-scale span1,5 (mV) 25 - 65 30 - 95 40 - 95 60 - 150 60 - 150 85 - 225 85 - 225 PERFORMANCE CHARACTERISTICS (all models) IS = 1.0 mA, TA = 25°C Characteristics Zero pressure offset Combined linearity, hysteresis, repeatability2 Temperature effect on span3,8 Temperature effect on offset4,8 Long term stability of offset and span6 Response time (10 to 90 %)7 Input impedance Output impedance Min. Typ. Max. Unit -30.0 ----------4.00 4.00 -10 0.25 0.25 0.50 0.10 0.10 5.00 5.00 20.0 0.50 1.50 2.00 ----6.50 6.50 mV %FSO %FSO %FSO mV ms kΩ kΩ Specification notes: 1. 2. 3. 4. 5. 6. 7. 8. 9. 2/5 Reference conditions: supply current = 1.0 mA, TA=25°C, common-mode line pressure = 0 psig, pressure applied to P1, unless otherwise noted. Accuracy is the sum of hysteresis and linearity. Hysteresis is the maximum output difference at any point within the operating pressure range for increasing and decreasing pressure. Linearity refers to the best straight line fit as measured for the offset, full-scale and 1/2 full-scale pressure at 25°C. This is the maximum temperature shift for span when measured between 0 and 50°C relative to the 25°C reading. Typical temperature coefficients for span and resistance are -2200 and +2200 ppm/°C respectively. This is the maximum temperature shift for offset when measured between 0 and 50°C relative to the 25°C reading. Span is the algebraic difference between the output voltage at full-scale pressure and the output at zero pressure. Maximum difference in output at any pressure with the operating pressure range and temperature within 0 to 50°C after: a) 100 temperature cycles, 0 to 50°C. b) 1.0 million pressure cycles, 0 psi to full-scale span. Response time for a 0 psi to full-scale span pressure step change. 10 to 90 % rise time. Temp. effect on span and offset are guaranteed by design. Therefore these parameters are not 100 % tested. If the proof pressure is exceeded, even momentarily, the package may leak or burst, or the pressure sensing die may fracture. Note: The proof pressure for the forward gage of all devices in the D4-package is the specified value or 100 psi whatever is less. The SCC100D (button package) can be used in forward gage mode only when the pressure doesn't exceed 30 psi, or no special care ist taken. July 2005 / 040 www.sensortechnics.com SCC Series Pressure sensors PHYSICAL DIMENSIONS Button package mass: 1 g dimensions in inches (mm) Basic sensor DIP "D2" package mass: 1 g July 2005 / 040 dimensions in inches (mm) 3/5 www.sensortechnics.com SCC Series Pressure sensors PHYSICAL DIMENSIONS (cont.) Basic sensor DIP "D4" package 0.550 (13.97) P1 0.050 typ. (1.27) P2 0.470 (11.94) 0.090 typ. (2.29) 0.135 (3.43) 0.300 (7.62) 0.250 (6.35) 0.285 (7.24) 0.070 (1.78) 0.600 (15.24) mass: 1 g 0.01 (0.25) 0.380 (9.65) 0.110 typ. (2.79) 0.020 typ. (0.51) 0.100 typ. (2.54) dimensions in inches (mm) N package mass: 5 g 4/5 dimensions in inches (mm) July 2005 / 040 www.sensortechnics.com SCC Series Pressure sensors ORDERING INFORMATION Part number Pressure range Absolute pressure Button p ackag e " N " p ackag e DIP package single port 0...15 psi S C C 15A S C C 15A N S C C 15A D 2 0...30 psi S C C 30A S C C 30A N S C C 30A D 2 0...100 psi S C C 100A S C C 100A N S C C 100A D 2 0...5 psi Gage pressure 0...15 psi 0...30 psi SCC05GD2 use differential devices use differential devices 0...100 psi Differential pressure DIP package dual port SCC15GD2 SCC30GD2 SCC100GD2 0...5 psi S C C 05D S C C 05D N S C C 05D D 4 0...15 psi S C C 15D S C C 15D N S C C 15D D 4 0...30 psi S C C 30D S C C 30D N S C C 30D D 4 0...100 psi S C C 100D S C C 100D N S C C 100D D 4 SenSym and Sensortechnics reserve the right to make changes to any products herein. SenSym and Sensortechnics do not assume any liability arising out of the application or use of any product or circuit described herein, neither does it convey any license under its patent rights nor the rights of others. July 2005 / 040 5/5 www.sensortechnics.com