NPH-8-030AH

## NPH Series 

Solid State Low Pressure Sensors 

## Applications 

- Process control, P-to-I converters 

- Pneumatic control systems 

## Features 

   - Solid state, high reliability 

   - Standard TO-8 package suitable for PC board mount 

- HVAC controls 

   - Low cost , small size 

- Biomedical: Infusion pumps, sphygmomanometers, respirators 

- Aerospace: Altimeters, barometers, cabin pressure sensors 

- Computer peripherals 

- Available in gauge, absolute, and differential pressure versions 

- Media compatible with non-corrosive gases and dry air 

- Thermal accuracy FSO 0.5% typical 

- Overpressure capability to five times maximum rated pressure 

- Three standard ranges: 0 to 10 inH2O (0 to 25 mbar), 0 to 1 psi (0 to 0.06 bar), and 0 to 5 psi (0 to 0.34 bar) 

- Nonlinearity 0.05% FSO typical 

- Standard 3/16 in OD pressure port 

## **Amphenol Advanced Sensors** 

- Ceramic substrate with temperature compensation resistors 

## NPH Series Specifications 

## Description 

|**Parameter**|**Value**|**Units**|**Notes**|
|---|---|---|---|
|**General**||||
|Pressure Range|0 to 10<br>0 to 1|inH2O<br>psi|(0 to 25 mbar) 0 to 2.5<br>kPa<br>(0 to 7 bar) 0 to 7 kPa|
||0 to 5|psi|(0 to 0.34 bar) 0 to 30|
|Maximum Pressure<br>**Electrical @ 77°F (25°C) Unless Otherwise Stated**<br>Input Excitation<br>Insulation Resistance|5x<br>**Electrical @ 77°F (25°C) Unless Otherwise Stated**<br>1.5<br>mA<br>100<br>MΩ||kPa<br>rated pressure(10)<br>2 mA maximum<br>@ 50 VDC|
|Input Impedance<br>Output Impedance<br>Bridge Impedance|3200<br>5000<br>5000|Ω<br>Ω<br>Ω|±25%<br>±20%<br>±20%|
|**Environmental**||||
|**Temperature Range**||||
|Operating(9)|–40 to 257|°F|(-40°C to 125°C)|
|Compensated|32 to 158|°F|(0°C to 70°C)|
|Vibration|10|gRMS|20 to 2000Hz|
|Shock|100|g|11 milliseconds|
|Life (Dynamic Pressure|1 x 106|cycles||
|Cycle)||||
|**Mechanical**(1)||||
|Weight|<0.2|oz|(<5 g)|
|Media Compatibility|Non-corrosive gases and clean, dry air|||
|Wetted Materials||||
|Top Port|Nickel, gold plated Kovar, silicone gel, gold|Nickel, gold plated Kovar, silicone gel, gold||
|Bottom Port<br>~~FF~~|wire, RTV, silicon and glass.<br>Gold plated Kovar, silicon, glass and RTV(9)<br>~~TTTLNWWDWWWMW\GMC~TR~~|||



An integrated circuit silicon sensor chip is housed in a standard TO-8 electrical package that is printed circuit board mountable. 

The latest techniques in micromachining have been used to ion-implant piezoresistive strain gauges into a wheatstone bridge configuration that is integrally formed on a micromachined silicon diaphragm. As with all NovaSensor silicon sensors, the NPH Series employs SenStable[®] processing technology, providing excellent output stability. Constant current excitation to the sensor produces a voltage output that is linearly proportional to the input pressure. 

The user can provide standard signal conditioning circuitry to amplify the 100 mV output signal. The sensor is compatible with most non-corrosive gases and dry air. 

A laser-trimmed, thick-film resistor network on a hybrid ceramic substrate provides temperature compensation. 

|+In <br>" <br>+Out|Gold plated Kovar, silicon, glass and RTV<br>Parameter<br>Min.<br>Typical<br>2.5<br>kPa<br>Max.<br>Min.<br>Typical<br>7 & 30<br>kPa<br>Max.<br>Units<br>Notes<br>Performance Parameters(7), Compensated(1)<br>Offset<br>-8<br>2<br>8<br>-4<br>2<br>4<br>mV<br>Full Scale (FS) Output<br>2.5 kPa<br>25<br>50<br>90<br>mV<br>2<br> ~~FF~~<br>~~TTTLNWWDWWWMW\GMC~TR~~<br> ~~Oa~~<br>~~Mé«BNI.090909090909090.0:«SII~~<br>~~ss~~|Gold plated Kovar, silicon, glass and RTV<br>Parameter<br>Min.<br>Typical<br>2.5<br>kPa<br>Max.<br>Min.<br>Typical<br>7 & 30<br>kPa<br>Max.<br>Units<br>Notes<br>Performance Parameters(7), Compensated(1)<br>Offset<br>-8<br>2<br>8<br>-4<br>2<br>4<br>mV<br>Full Scale (FS) Output<br>2.5 kPa<br>25<br>50<br>90<br>mV<br>2<br> ~~FF~~<br>~~TTTLNWWDWWWMW\GMC~TR~~<br> ~~Oa~~<br>~~Mé«BNI.090909090909090.0:«SII~~<br>~~ss~~|Gold plated Kovar, silicon, glass and RTV<br>Parameter<br>Min.<br>Typical<br>2.5<br>kPa<br>Max.<br>Min.<br>Typical<br>7 & 30<br>kPa<br>Max.<br>Units<br>Notes<br>Performance Parameters(7), Compensated(1)<br>Offset<br>-8<br>2<br>8<br>-4<br>2<br>4<br>mV<br>Full Scale (FS) Output<br>2.5 kPa<br>25<br>50<br>90<br>mV<br>2<br> ~~FF~~<br>~~TTTLNWWDWWWMW\GMC~TR~~<br> ~~Oa~~<br>~~Mé«BNI.090909090909090.0:«SII~~<br>~~ss~~|Gold plated Kovar, silicon, glass and RTV<br>Parameter<br>Min.<br>Typical<br>2.5<br>kPa<br>Max.<br>Min.<br>Typical<br>7 & 30<br>kPa<br>Max.<br>Units<br>Notes<br>Performance Parameters(7), Compensated(1)<br>Offset<br>-8<br>2<br>8<br>-4<br>2<br>4<br>mV<br>Full Scale (FS) Output<br>2.5 kPa<br>25<br>50<br>90<br>mV<br>2<br> ~~FF~~<br>~~TTTLNWWDWWWMW\GMC~TR~~<br> ~~Oa~~<br>~~Mé«BNI.090909090909090.0:«SII~~<br>~~ss~~|Gold plated Kovar, silicon, glass and RTV<br>Parameter<br>Min.<br>Typical<br>2.5<br>kPa<br>Max.<br>Min.<br>Typical<br>7 & 30<br>kPa<br>Max.<br>Units<br>Notes<br>Performance Parameters(7), Compensated(1)<br>Offset<br>-8<br>2<br>8<br>-4<br>2<br>4<br>mV<br>Full Scale (FS) Output<br>2.5 kPa<br>25<br>50<br>90<br>mV<br>2<br> ~~FF~~<br>~~TTTLNWWDWWWMW\GMC~TR~~<br> ~~Oa~~<br>~~Mé«BNI.090909090909090.0:«SII~~<br>~~ss~~|Gold plated Kovar, silicon, glass and RTV<br>Parameter<br>Min.<br>Typical<br>2.5<br>kPa<br>Max.<br>Min.<br>Typical<br>7 & 30<br>kPa<br>Max.<br>Units<br>Notes<br>Performance Parameters(7), Compensated(1)<br>Offset<br>-8<br>2<br>8<br>-4<br>2<br>4<br>mV<br>Full Scale (FS) Output<br>2.5 kPa<br>25<br>50<br>90<br>mV<br>2<br> ~~FF~~<br>~~TTTLNWWDWWWMW\GMC~TR~~<br> ~~Oa~~<br>~~Mé«BNI.090909090909090.0:«SII~~<br>~~ss~~|Gold plated Kovar, silicon, glass and RTV<br>Parameter<br>Min.<br>Typical<br>2.5<br>kPa<br>Max.<br>Min.<br>Typical<br>7 & 30<br>kPa<br>Max.<br>Units<br>Notes<br>Performance Parameters(7), Compensated(1)<br>Offset<br>-8<br>2<br>8<br>-4<br>2<br>4<br>mV<br>Full Scale (FS) Output<br>2.5 kPa<br>25<br>50<br>90<br>mV<br>2<br> ~~FF~~<br>~~TTTLNWWDWWWMW\GMC~TR~~<br> ~~Oa~~<br>~~Mé«BNI.090909090909090.0:«SII~~<br>~~ss~~|Gold plated Kovar, silicon, glass and RTV<br>Parameter<br>Min.<br>Typical<br>2.5<br>kPa<br>Max.<br>Min.<br>Typical<br>7 & 30<br>kPa<br>Max.<br>Units<br>Notes<br>Performance Parameters(7), Compensated(1)<br>Offset<br>-8<br>2<br>8<br>-4<br>2<br>4<br>mV<br>Full Scale (FS) Output<br>2.5 kPa<br>25<br>50<br>90<br>mV<br>2<br> ~~FF~~<br>~~TTTLNWWDWWWMW\GMC~TR~~<br> ~~Oa~~<br>~~Mé«BNI.090909090909090.0:«SII~~<br>~~ss~~|Gold plated Kovar, silicon, glass and RTV<br>Parameter<br>Min.<br>Typical<br>2.5<br>kPa<br>Max.<br>Min.<br>Typical<br>7 & 30<br>kPa<br>Max.<br>Units<br>Notes<br>Performance Parameters(7), Compensated(1)<br>Offset<br>-8<br>2<br>8<br>-4<br>2<br>4<br>mV<br>Full Scale (FS) Output<br>2.5 kPa<br>25<br>50<br>90<br>mV<br>2<br> ~~FF~~<br>~~TTTLNWWDWWWMW\GMC~TR~~<br> ~~Oa~~<br>~~Mé«BNI.090909090909090.0:«SII~~<br>~~ss~~|
|---|---|---|---|---|---|---|---|---|---|
|Rs|7 kPa||||50|75|150|mV|2|
|-In|30 kPa<br>75<br>100<br>125<br>mV<br>2<br>~~ee~~|||||||||
||Linearity|–1.0|0.1|1.0|–0.25|0.05|0.25|%FSO|3|
|connected to chip substrate.|Hysteresis &|-0.2|0.05|0.2|-0.2|0.05|0.2|%FSO||
||Repeatability|||||||||
|NPH Series schematic diagram|Thermal|||||||||
||Accuracy of|-3|0.5|3|-2|0.5|2|%FSO|4|
||Offset|||||||||
||Accuracy of FSO|–3|–1|3|-1.5|-0.5|1.5|%FSO|4|
||Thermal|–0.75|0.5|0.75|–0.5|0.2|0.5|%FSO|5|
||Hysteresis|||||||||
||Short-Term||5|||5||µV/V|6, 11|
||Stability of Offset|||||||||
||Short-Term||5|||5||µV/V|6, 11|
||Stability of FSO|||||||||



NPH Series schematic diagram 

1. Performance with offset, thermal accuracy of offset, and thermal accuracy of FSO compensation resistors. 

2. FSO with 1.5mA input excitation. 

3. Best fit straight line. 

4. 32°F to 158°F (0°C to 70°C) with reference to 77°F (25°C) 

5. 32°F to 158°F (0°C to 70°C), by design 

6. Normalized offset/bridge voltage —100 hrs, typical value, not tested in production. 

7. All values measured at 77°F (25°C) and at 1.5 mA, unless otherwise noted. 8. Reduced performance outside compensation range. 

9. Backside differential tube is nickel or Kovar. 

10. Top side pressure. 

11. Typical specifications are for reference only; absolute values may vary. 

## NPH Series Specifications 

**==> picture [203 x 83] intentionally omitted <==**

**----- Start of picture text -----**<br>
(See note 3)<br>; 1. Backside differential tube (Seeis 17.15note +0.0512)<br>Out (0.675 +0.010) long, measured from back of header<br>+In tip, not from backplane of ceramic to tip.<br>-In 2. Length is 19.33 -0.635/+0.889 (0.761 -0.025/0.035)<br>-0u gauge type and 19.33 -0.635/1.40 (0.761 .025/+0.055)<br>for differential type.<br>3.  A gap between the surface of the header and the<br>     backside of the Ceramic hybrid is allowable<br>     (typically 0.026 in).<br>**----- End of picture text -----**<br>


NPH Series package diagram 

## Ordering Information 

The code number to be ordered may be specified as follows: 

## **NPH** 

**Code Package Configuration** 8 TO-8 **Code Pressure Range (kPa)** 002.5 2.5 kPa; 10 inH2O 007 7 kPa; 1 psi 030 30 kPa; 4.35 psi **Code Pressure** A Absolute (30 kPa only) G Gauge D Differential **Code Compensation** H Hybrid substrate 

NPH    -    _____    -    _____ -  _____   -   _____   Typical model number 

## **Amphenol Advanced Sensors** 

www.amphenol-sensors.com 

© 2017 Amphenol Corporation. All Rights Reserved. Specifications are subject to change without notice. Other company names and product names used in this document are the registered trademarks or trademarks of their respective owners. 

**AAS-920-275C-03/2017**