The MPX12 series is a Motorola silicon piezoresistive pressure sensor providing a very accurate and linear voltage output, directly proportional to the applied pressure. This standard, low cost, uncompensated sensor permits manufacturers to design and add their own external temperature compensating and signal conditioning networks. Compensation techniques are simplified because of the predictability of Motorola’s single element strain gauge design.
The MPX12 series devices are silicon piezoresistive pressure sensors that deliver a linear voltage output proportional to applied differential pressure. They are low‑cost, uncompensated sensors intended for designers who add external temperature compensation and signal conditioning. Typical applications include air‑movement control, environmental control systems, level indicators, leak detection, medical instrumentation, industrial controls, pneumatic control systems, and robotics.
The sensors operate over a differential pressure range of 0‑10 kPa, with supply voltages from 3.0 V to 6.0 V and a typical full‑scale span of about 35 mV. They are offered in basic element packages (case 344‑15) and ported configurations (case 344C‑01, 344B‑01, etc.) with detailed mechanical dimensions and pin assignments. Maximum ratings include 75 kPa overpressure and 100 kPa burst pressure, and they are rated for storage and operation from –40 °C to +125 °C.
| Differential Pressure Range | 0‑10 kPa |
|---|---|
| Supply Voltage | 3.0‑6.0 V |
| Full Scale Span | 45‑70 mV |
| Sensitivity | 5.5 mV/kPa |
| Linearity | ±0.5 % FS |
| Overpressure Rating | 75 kPa |
| Burst Pressure Rating | 100 kPa |
| Operating Temperature Range | -40 °C to +125 °C |
| Weight (basic element) | 2.0 g |
| Input Impedance | 400‑550 Ω |
The MPX12 sensor measures differential pressures from 0 to 10 kPa.
The sensor operates with a supply voltage between 3.0 V and 6.0 V.
Typical full‑scale output is about 35 mV, with a full‑scale span of 45‑70 mV depending on conditions.