TPS-ULP – pressure sensor
The digital ultra-low-pressure sensors of the TPS-ULP series combine modern MEMS pressure sensing elements with CMOS mixed-signal processing in a compact SOIC-16 package. The result is a fully calibrated and temperature-compensated digital low-pressure sensor that, depending on the version, features vertical or horizontal dual-port pressure connections. The series includes uni- and bidirectional gauge and differential pressure models.
The total error band after PCB mounting and system-level autozero is below 1 %FS across the entire compensated temperature range from −20 to 85 °C. The stable warm-up behavior and excellent long-term stability underline the sensor’s reliability over its full lifetime.
The newly developed, integrated signal-conditioning ASIC allows the configuration of internal filters as well as checksums to ensure data integrity of this modern micromechanical silicon pressure sensor. The TPS-ULP can be soldered directly onto the PCB in standard SMT processes as an SOIC-16 device. Via the 24-bit I²C interface, both a calibrated pressure signal and a temperature signal are available. External compensation networks or additional customer-specific correction circuits are not required.
The TPS-ULP series is currently available for pressure ranges of ±150 Pa, ±250 Pa and 0 … 500 Pa. Higher pressure ranges from 5 mbar up to 2 bar are available as TPS-LP and TPS-MP differential and gauge pressure sensors.
TPS products are supplied in Tape & Reel packaging.
Further information on the general structure of this sensor technology can be found in our whitepapers on functionality and package types: Whitepaper AMSYS
Features
- Pressure ranges: ±150 Pa, ±250 Pa, 0 … 500 Pa
- Pressure type: Gauge / unidirectional differential (0 … Pmax), Bidirectional differential (±Pmax)
- 24-bit ADC
- 24-bit I²C output
- Total Error Band (TEB): ±1 %FS
- Pressure-calibrated and temperature-compensated output
- Compensated temperature range: −20 to 85 °C
- Operating temperature range: −40 to 105 °C
- Extended diagnostics incl. communication and memory check
- Supply voltage range: 3.0 … 5.5 V
- Sleep-mode current consumption: <1.8 µA
Applications
- CPAP / Sleep apnea
- Ventilators / Respiratory devices
- Gas flow instrumentation
- Airflow measurement
- HVAC / VAV
- Leakage monitoring
- Filter monitoring
Downloads
- Datasheet TPS-Ultralow pressure sensor
- Application note 510: AMS 5812 – Measuring over- and underpressure bidrectionally with one sensor (Also applies to TPS series)
- Application note 508: AMS 5812 – Media compatibility of silicon pressure sensors (Also applies to TPS series)
Article & Ordering Information
| Part Number | Designation | Pressure Range | Ports |
|---|---|---|---|
| 20032216-00 | TPS-250PG-BA1N-00-T | 0 – 250 Pa | horizontal |
| 20032074-00 | TPS-250PG-CA1N-00-T | 0 – 250 Pa | vertical |
| 20032217-00 | TPS-300PG-BA1N-00-T | 0 – 300 Pa | horizontal |
| 20032075-00 | TPS-300PG-CA1N-00-T | 0 – 300 Pa | vertical |
| 20032218-00 | TPS-500PG-BA1N-00-T | 0 – 500 Pa | horizontal |
| 20032002-00 | TPS-500PG-CA1N-00-T | 0 – 500 Pa | vertical |
| 20032022-00 | TPS-500PG-CA2N-00-T | 0 – 500 Pa | vertical |
| 20032219-00 | TPS-600PG-BA1N-00-T | 0 – 600 Pa | horizontal |
| 20032215-00 | TPS-125PD-BA1N-00-T | -125 – 125 Pa | horizontal |
| 20032072-00 | TPS-125PD-CA1N-00-T | -125 – 125 Pa | vertical |
| 20032214-00 | TPS-150PD-BA1N-00-T | -150 – 150 Pa | horizontal |
| 20032001-00 | TPS-150PD-CA1N-00-T | -150 – 150 Pa | vertical |
| 20032213-00 | TPS-250PD-BA1N-00-T | -250 – 250 Pa | horizontal |
| 20032073-00 | TPS-250PD-CA1N-00-T | -250 – 250 Pa | vertical |
| 20032076-00 | TPS-600PD-CA1N-00-T | -600 – 600 Pa | vertical |
For information on prices and delivery times or if you have any technical questions, please contact info@amsys-sensor.com.