NPA
Surface-Mount
Pressure Sensor Series
The NPA product series is provided in a
miniature size as a cost effective solution
for applications that require calibrated
performance. Packaged in a SOIC14 pin
surface mount, the NPA Series is available
in Gauge, Absolute or Differential pressure
ranges with either mV, amplified analog or
digital outputs. The sensor is intended for
printed circuit board mounting and delivered
in tape and reel form to simplify manufacturing
handling.
Features
• Surface Mountable
• Differential, Gauge, Absolute & Low Pressure
• 10” H2O to 30 PSI Full Scale
• Output Options: Amplified Analog,
Digital Serial (14bit), Digital I
2
C, Uncalibrated
mV
• On chip temperature sensor in digital mode
• Operating temperature range of -40 to 125°C
• Total Error Band < ±1.5% FSO
• Up to 60 psi proof pressure
Amphenol
Advanced Sensors
General NPA Specifications
Parameter
Environmental
Temperature Range
Operating
Compensated
Storage
Mechanical
Weight
Media Compatibility
Positive differential and gauge
ports
Negative differential ports
Compatible with exposed materials
Dry gases only
1
~1
grams
-40 to +125
0 to 60
-40 to +125
°C
°C
°C
-40 to +257°F
+32 to +157°F
-40 to +257°F
Value
Units
Notes
Notes: 1. Exposed materials are thermoset plastic, silicon, epoxy, RTV, pyrex and silicone
Parameter
Common Parameters
Accuracy (Total Error Band)
Proof Pressure (10”H2O to 1 psi)
Proof Pressure (>1 psi to 30 psi)
Maximum Package Pressure
Pressure ranges
Units
Min
Typ
Max
Notes
%FSO
psi
psi
-1.5
35
60
60
10”H2O
1.5
30psi
Series
NPA-100
NPA-300
NPA-500
NPA-600
NPA-700
Excitation Voltage
1.5mA
3.3V
5.0V
5.0V *
5.0V *
Min/Max
Notes
NPA Uncompensated, mV
3.135 V to 3.465 V
4.75 V to 5.25 V
4.75 V to 5.25 V
4.75 V to 5.25 V
NPA Compensated, low power amplified analog
NPA Compensated, amplified analog
NPA Compensated, digital serial
NPA Compensated, digital I
2
C
* 3.3V optional, contact factory for more details
2
Output Option: Amplified Analog
Parameter
Units
Min
Max
Analog Performance Parameters 5 volt Excitation
Offset
Span (Absolute/Gauge)
Volts
Volts
0.44
4
0.56
Analog Performance Parameters 3.3 volt Excitation
Offset
Span (Absolute/Gauge)
Volts
Volts
0.46
2.5
0.54
Typical Analog Circuits
Circuit layout same as “Ratiometric Voltage Output”
V supply +2.7 to +5.5V
V supply +5 to +5.5V
J107
1
2
3
4
5
6 VS S
7
NP A
S ens or
14
13
12
11
1
2
3
NP A
S ens or
14
13
12
11
0.1µF
V out
4
5
6 VS S
7
0.1µF
V out
V gate 10
V DD
S IG
9
8
V gate 10
gate
V DD
S IG
9
8
G round
G round
Ratiometric Voltage Output - Standard NPA
Ratiometric Voltage Output with Over-Voltage Protection - Request Required
V supply +5.5 to +30V
MMBF 4392
1
2
3
4
5
6 VS S
7
NPA Pinout
Pin
#
Amplified
Analog
--
--
NC
NC
--
VSS
--
SIG
VDD
--
NC
NC
--
--
Do Not Connect
Do Not Connect
Analog Out, Calibration Interface
Supply Voltage
Ground Supply
Do Not Connect
Do Not Connect
Function Notes
1
2
NP A
S ens or
14
13
12
11
0.1µF
V out
V gate 10
V DD
S IG
9
8
3
4
5
G round
6
7
8
9
10
11
12
13
14
Absolute Voltage Output - Request Required
3
Output Option: Digital Serial (14 bit)
Parameter
Digital Performance
Resolution
Sampling Rate
ADC
kHz
14bit
1
16383
steps
Units
Min
Typ
Max
Notes
Digital Output Options
Streaming serial output is a 14 bit number proportional to the full scale.
Zacwire—Digital Output (NOM) Bridge Readings
Zacwire—Digital Output (NOM) Bridge Readings with Temperature Option
NPA Pinout
Pin
#
1
2
3
4
5
6
7
8
9
10
11
12
13
14
Amplified
Digital Serial
--
--
NC
NC
--
VSS
--
SIG
VDD
--
NC
NC
--
--
Do Not Connect
Do Not Connect
Digital Out, Calibration Interface
Supply Voltage
Ground Supply
Do Not Connect
Do Not Connect
Function Notes
4
Output Option: Digital I
2
C
Parameter
Digital Performance
Resolution (ADC)
I C Slave Address
Sampling Rate
I
C Bit Rate
I
2
C Mode
2
2
Units
Min
Typ
Max
Notes
bit
14
0x28
16383 steps
kHz
kbits/s
100
2
400
Update
Digital I
2
C Update Mode Output Options
I2C Circuit NPA Pinout
Pin
#
1
2
3
4
5
6
7
8
9
10
11
12
13
14
Digital I
2
C
--
--
NC
NC
--
VSS
VDD
SDA
SCL
--
NC
NC
--
--
Do Not Connect
Do Not Connect
I2C Circuit NPA Pinout
Ground Supply
Supply Voltage
Serial Data, Calibration Interface
Serial Clock, Calibration Interface
Do Not Connect
Do Not Connect
Function Notes
5
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