Medium Pressure Digital Sensor SM4221, SM4321, SM4421 Series Gauge & Differential Pressure Sensors FEATURES Pressure ranges from 2.5 t0 14.9 PSI gauge, differential and asymmetric outputs 14-bit digital, pressure calibrated and temperature compensated output 2 I C Digital Interface o Compensated temperature range: -20 to 85 C Insensitive to mounting orientation Robust JEDEC SOIC-16 package for automated assembly Manufactured according to ISO9001 and ISO/TS 16949 standards DESCRIPTION The SM4X21 Series is a digital, medium pressure MEMS sensor Combining the pressure sensor with a signal-conditioning ASIC in a family offering state-of-the-art pressure transducer technology and single package simplifies the use of advanced silicon micro-machined CMOS mixed signal processing technology to produce a digital, fully pressure sensors. The pressure sensor can be mounted directly on a conditioned, multi-order pressure and temperature compensated standard printed circuit board and a high level, calibrated pressure sensor in JEDEC standard SOIC-16 package with a dual vertical signal can be acquired from the digital interface. This eliminates the porting option. It is available in both compound gage or differential need for additional circuitry, such as a compensation network or pressure configurations. With the dual porting, a vacuum-gage microcontroller containing a custom correction algorithm. measurement is possible to minimize altitude errors due to changes in ambient pressure. Customer-specified pressure ranges and supply voltages are available. The SM4X21 Series is shipped in sticks or tape & reel. Medical Industrial Consumer Sleep Apnea Airflow Measurement Sports Equipment CPAP Pneumatic Gauges Appliances Ventilators Pressure Switches Gas Flow Instrumentation Safety Cabinets Air Flow Monitors Life Sciences Negative Pressure Wound Therapy Gas Flow Instrumentation Silicon Microstructures, Inc. 2001-2016. All rights reserved +1-(408) 577-0100 sales si-micro.com I www.si-micro.com DOC 40DS4960.02 Page 1www.si-micro.com SM4221, SM4321, SM4421 Series Absolute Maximum Ratings o All parameters are specified at Vdd = 3.3 V supply voltage at 25 C, unless otherwise noted. No. Characteristic Symbol Minimum Typical Maximum Units 1 Supply Voltage V 2.7 6.00 V DD 2 Supply Current I 4.00 mA VDD 3 Update Period 2 mS 4 Compensated Temperature T -20 +85 C COMP (a) 5 Operating Temperature T -40 +105 C OP (a) 6 Storage Temperature T -40 - +125 C STG (a,b) 7 Media Compatibility (a, c) Proof Pressure 8 2.5 7.5 PSI P 25 PSI Proof 7.5 15 PSI 45 PSI (a, d) Burst Pressure 9 2.5 7.5 PSI P 45 PSI Burst 7.5 15 PSI 75 PSI Notes: a. Tested on a sample basis. b. Clean, dry gas compatible with wetted materials. Wetted materials include silicon, epoxy, RTV, gold and aluminum. c. Proof pressure is defined as the maximum pressure to which the device can be taken and still perform within specifications after returning to the operating pressure range d. Burst pressure is the pressure at which the device suffers catastrophic failure resulting in pressure loss through the device. Silicon Microstructures, Inc. 2001-2016. All rights reserved +1-(408) 577-0100 sales si-micro.com I www.si-micro.com DOC 40DS4960.02 Page 2