GE
Measurement & Control Solutions
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
• 60 psi proof pressure on all ranges
GE imagination at work
General NPA Specifications
Parameter
Environmental
Temperature Range
Operating
Compensated
Storage
Mechanical
Weight
Media Compatibility
Positive differential and gauge
ports
Negative differential ports
Value
Units
Notes
-40 to +125
0 to 60
-40 to +125
°C
°C
°C
-40 to +257°F
+32 to +157°F
-40 to +257°F
~1
grams
Compatible with exposed materials
Dry gases only
1
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
Output Option: Amplified Analog
Parameter
Units
Min
Typ
Max
Analog Performance Parameters 5 volt Excitation
Offset
Span
Volts
Volts
0.44
0.5
4
0.56
Analog Performance Parameters 3.3 volt Excitation
Offset
Span
Volts
Volts
0.46
0.5
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
NP A
S ens or
14
13
12
11
0.1µF
V out
V gate 10
V DD
S IG
9
8
G round
Absolute Voltage Output - Request Required
NPA Pinout
Pin
#
1
2
3
4
5
6
7
8
9
10
11
12
13
14
Amplified
Analog
--
--
--
--
--
VSS
--
SIG
VDD
--
--
--
--
--
Analog Out, Calibration Interface
Supply Voltage
Ground Supply
Function Notes
Output Option: Digital Serial (14 bit)
Parameter
Digital Performance
Resolution
Sampling Rate
Digital Serial Output
Temperature Sensor Accuracy
4°C
8bit
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.
2 DATA Byte Packet
Digital Bridge Output
S 0 0 5 4 3 2 1 0 P
S
Start Bit
Parity Bit Data Byte
Data Bit (Example: Bit 2
½ Stop Bit
½
S 7 6 5 4 3 2 1 0 P
Stop
P
2
Stop
Data Byte Bridge High
Data Byte Bridge Low
½
Zacwire—Digital Output (NOM) Bridge Readings
3 DATA Byte Packet
Digital Bridge Output with Temperature
S
0
0
5
4
3
2
1
0
P
Stop
½
S
7
6
5
4
3
2
1
0
P
Stop
½
S
7
6
5
4
3
2
1
0
P
Data Byte Bridge High
Data Byte Bridge Low
Data Byte Temperature
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
--
--
--
--
--
VSS
--
SIG
VDD
--
--
--
--
--
Digital Out, Calibration Interface
Supply Voltage
Not Connected
Ground Supply
Function Notes
Output Option: Digital I
2
C
Parameter
Digital Performance
Resolution (ADC)
I
2
C Slave Address
Sampling Rate
I C Bit Rate
I
2
C Mode
Temperature Accuracy
(0 to 60°C)
°C
2
Units
Min
Typ
Max
Notes
bit
14
0x28
16383 steps
kHz
kbits/s
100
2
400
Update
2
11 bit
Digital I
2
C Update Mode Output Options
NPA Pinout
Pin
#
1
2
3
4
5
6
7
8
9
10
11
12
13
14
Digital I
2
C
--
--
--
--
--
VSS
VDD
SDA
SCL
--
--
--
--
--
Ground Supply
Supply Voltage
Serial Data, Calibration Interface
Serial Clock, Calibration Interface
Function Notes
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