MODEL 1220
PC Board Mountable Pressure Sensor
0-50 mV Output
Gage, Differential and Absolute
Temperature Compensated
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Process Control
Medical Instrumentation
HVAC
Barometric Pressure
Air Flow Management
Avionics
DESCRIPTION
The Model 1220 is a temperature compensated, piezoresistive
silicon pressure sensor packaged in a dual-in-line configura-
tion and intended for cost sensitive applications where excel-
lent performance and long-term stability are required.
Integral temperature compensation is provided over a
range of 0-50°C using laser-trimmed resistors. An additional
laser-trimmed resistor is included to normalize pressure sensi-
tivity variations by setting the current drive to the sensor
bridge, resulting in an interchangeability of ±1% prior to
amplification.
Gage, absolute, and differential pressure ranges from 0-2
PSI to 0-100 PSI are available. Multiple lead and tube
configurations are also available for customizing the package
for specific applications.
Please refer to the low pressure section for information on
products with operating pressures less than 0-2 PSI. For a
compensated sensor using a gain set resistor as opposed to a
current set resistor, please refer to the Model 1210.
Pressure
FEATURES
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Dual-in-line Package
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±0.1% Non-linearity
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±0.5% Temperature Performance
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1.0% Interchangeable Span
(provided by gain set resistor)
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Solid State Reliability
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Low Power
STANDARD RANGES
Range
0 to 2
0 to 5
0 to 15
0 to 30
0 to 50
0 to 100
psia
psid
psig
DIMENSIONS
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I n t e r n e t : w w w. m s i u s a . c o m
Te l : 1 - 7 5 7 - 7 6 6 - 1 5 0 0
N o r t h A m e r i c a To l l F r e e : 1 - 8 0 0 - 7 4 5 - 8 0 0 8
Fax: 1-757-766-4297
1-17
P r e s s u r e S e l e c t i o n G u i d e –
H I Ts – S t a n d a r d
PC Board Mountable Pressure Sensor
MODEL 1220
PERFORMANCE SPECIFICATIONS
Supply Voltage: See application schematic.
Ambient Temperature: 25°C (Unless otherwise specified)
PARAMETERS
MIN
TYP
MAX
UNITS
NOTES
__________________________________________________________________________________________________________________________________________________
Full Scale Output Span
49.5
50.0
50.5
mV
1
__________________________________________________________________________________________________________________________________________________
Zero Pressure Output
2
±mV
2
__________________________________________________________________________________________________________________________________________________
Pressure Non-linearity
0.05
0.1
±% Span
3
__________________________________________________________________________________________________________________________________________________
Pressure Hysteresis
0.01
0.1
±% Span
__________________________________________________________________________________________________________________________________________________
Input & Output Resistance
2500
4400
6000
Ω
__________________________________________________________________________________________________________________________________________________
Temperature Error - Span
0.3
0.5
±% Span
2, 4
__________________________________________________________________________________________________________________________________________________
Temperature Error - Zero
0.1
0.5
±% Span
1, 2, 4
__________________________________________________________________________________________________________________________________________________
Thermal Hysteresis - Zero
0.1
±% Span
__________________________________________________________________________________________________________________________________________________
Supply Current
2.0
mA
__________________________________________________________________________________________________________________________________________________
Response Time
1.0
msec
5
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Output Noise
1.0
µV p-p
6
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Output Load Resistance
2
MΩ
7
__________________________________________________________________________________________________________________________________________________
Insulation Resistance (50 VDC)
50
MΩ
__________________________________________________________________________________________________________________________________________________
Pressure Overload
3X
Rated
8
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Operating Temperature
–40°C to +125°C
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Storage Temperature
–50°C to +150°C
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Media
Non-corrosive Gases Compatible with Wetted Materials
9
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Weight
3 grams
Notes
1. For 2 psi output on a 5 psi sensor span is 20.0 mV ± 1%, amplified span is
1.232V and TC zero temperature error is ±1.25%.
2. Compensation resistors are an integral part of the sensor package; no
additional external resistors are required. Pins 7 and 8 must be kept open.
3. Best Fit Straight Line.
4. Temperature range: 0-50°C in reference to 25°C.
5. For a zero-to-full scale pressure step change.
6. 10 Hz to 1 kHz.
7. Prevents increase of TC-Span due to output loading.
8. 3X or 200 psi maximum, whichever is less. 20 psi for 2 psi and 5 psi versions.
9. Wetted materials are glass, ceramic, silicon, RTV, nickel, gold, and aluminum.
10. Soldering of lead pins: 250°C for 5 seconds maximum.
11. Tube length: L=470 ± 5 mil, S=300 ± 3 mil, N=no tube.
12. Lead pins can either be in the same or the opposite direction as the
pressure tube. See Dimensions drawing for lead configurations.
CONNECTIONS
ORDERING INFORMATION
1220 A - 015 G - 3 S
Pressure Tubes (L, S, N - see note 12)
Lead Configuration (1, 3 - see note 13)
Type (G = Gage, A = Absolute, D = Differential)
Pressure Range
Grade
Model
APPLICATION SCHEMATIC
Nov 2002
P r e s s u r e S e l e c t i o n G u i d e –
H I Ts – S t a n d a r d
1-18
Pressure
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