The **SSCSSNN030PCAB3** is a high-precision piezoresistive silicon pressure sensor belonging to the **TruStability™ SSC (Standard Accuracy Silicon Ceramic) Series** manufactured by Honeywell. --- ## 1. Technical Specifications Below is a breakdown of the key technical parameters for this specific part number: | Parameter | Specification | | :--- | :--- | | **Pressure Range** | 0 psi to 30 psi | | **Pressure Type** | Absolute (A) | | **Output Type** | Analog (Ratiometric) | | **Supply Voltage** | 3.3 Vdc | | **Accuracy** | ±0.25% FSS (Full Scale Span) | | **Operating Temperature** | -40°C to 85°C [-40°F to 185°F] | | **Package Style** | SIP (Single In-line Package) | | **Port Style** | SNN (Smooth, No Flange, Needle) | --- ## 2. Part Number Nomenclature Breakdown Understanding the specific suffix helps identify the exact configuration: * **SSC**: **S**tandard Accuracy **S**ilicon **C**eramic (The series name). * **S**: SIP (Single In-line Package) housing. * **NN**: No ports (The sensor has a low-profile, smooth needle-style entry). * **030PC**: 30 psi pressure range, **P**ressure unit in psi, **C**ommercial grade. * **A**: **Absolute** pressure type (measures relative to a perfect vacuum). * **B**: 3.3V Supply voltage. * **3**: Analog output (typically 10% to 90% of Vsupply). --- ## 3. Key Electronic Features ### A. Piezoresistive Technology The sensor utilizes a specialized piezoresistive silicon micromachined sensing element. When pressure is applied, the resistance of the internal Wheatstone bridge changes, which is then processed by an on-board ASIC. ### B. Signal Conditioning (ASIC) Unlike basic transducers, the SSC series is **fully calibrated and temperature compensated**. The internal ASIC performs: 1. **Amplification:** Boosts the raw millivolt signal. 2. **Compensation:** Corrects for sensor offset, sensitivity, and temperature effects. 3. **Linearization:** Ensures the output is a straight line relative to the input pressure. ### C. Ratiometric Analog Output The output voltage is "ratiometric," meaning the output voltage is proportional to the supply voltage. * If $V_{supply} = 3.3V$: * $0 \text{ psi} \approx 0.33V$ (10% of supply) * $30 \text{ psi} \approx 2.97V$ (90% of supply) --- ## 4. Typical Applications * **Medical:** Ventilators, anesthesia machines, and blood pressure monitoring. * **Industrial:** HVAC controls, pneumatic controls, and gas leak detection. * **Precision:** Situations requiring extremely low Total Error Band (TEB) to ensure long-term stability. ---