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Digital Output Pressure Sensors Datasheet by Amphenol All Sensors Corporation

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Enhanced Digital Output Sensors MILITARY GRADE
0101
0101
01
DIGITAL OUTPUT PRESSURE SENSORS
• Medical Instrumentation
• Environmental Controls
• HVAC
• Meteorology
Applications
• 5” H2O to 100psi Pressure Ranges
All Combined Errors Over Temperature Less Than 0.1%, Typical
Wide -40 to 125°C Compensated Temperature Range
• Electrically Compatible to All Sensors GA142 Series
• Enhanced Dual Serial Interface Mode
Features
The Digital Output pressure sensors are based upon a proprietary surface mapping technology to produce a fully digital
output that virtually eliminates all repeatable errors over temperature and pressure. This series provides a 12 bit digital
serial output (14 bit in High Resolution Mode) with superior offset, span and linearity characteristics. The output is SPI and
MICROWIRE/PLUS® compatible as well as fully compatible with the All Sensors GA142 Series sensors.
In addition to synchronous communications, the Digital Output pressure sensors incorporates a bi-directional, TTL level,
asynchronous serial interfaces mode (hardware selectable 9,600 or 19,200 baud). This mode includes a command set that
allows the host to interrogate the sensor for model information, pressure range, serial number, pressure units and
conversion factor. The command set also allows the host to select a high resolution output mode, make minor adjustments
to offset and has an addressable feature that alows multiple sensors to be tied to the same interface buss.
This series is intended for use with non-corrosive, non-ionic working fluids such as air, dry gases and the like. All signals
are 5V TTL/CMOS compatible.
General Description
Physical Dimensions
Pin Label Description
1 Vcc +5V power supply input
2 Data/SI Data output for synchronous
mode. Serial in for asynchro-
nous mode.
3 Clock/SO Clock output for synchronous
mode. Serial out for asynchro-
nous mode.
4 Ready/Mode Ready output for synchronous
mode. Selects asynchronous
mode when held low during
reset.
5 Convert/BR Convert input for synchronous
mode. Selects one of two
baud rates for asynchronous
mode (low=9,600,
high=19,200).
6 Ground Ground for power and signals
Pin Descriptions
0.80
(20.3)
0.85
(21.6)
1.10
(27.9)
0.10 Typical
(2.54)
A
B
1
Pin 1 23456
0.63
(16.0)
0.21
(5.3)
0.414
(10.5)
0.48
(12.2) 0.55
(14.0)
0.174 to 0.190
(4.4 to 4.8)
1.08
(27.4)
0.25
(6.4)
Pin Size
0.010 x 0.020
(0.25 x 0.50)
NOTES:
1) Dimensions in inches (millimeters)
digital output military grade pressure sensors
0202
0202
02
Absolute Maximum Ratings
Operating Voltage
Compensated Temperature
Operating Temperature
Storage Temperature
Humidity Limits
+4.75Vdc to +5.25Vdc
-40° C to +125° C
-40 to +125° C
-40 to 125° C
0 to 95% RH
(non condensing)
Environmental Specifications
Supply Voltage (Vcc)
Voltage on Any Pin with Respect to Gnd
Common-mode pressure
Lead Temperature (soldering 2-4 sec.)
7Vdc
-0.6 to Vcc+0.6V
50 psig
250°C
Nominal
0.5
--
--
--
Minimum
--
--
--
--
Parameter (1)
Overall Accuracy (5)
Long Term Drift (one year)
Offset Position Sensitivity (1g)
Offset Warm-up Shift (3)
Maximum
1.0
0.5
0.03
0.25
Units
%FSO
%FSO
%FSO
%FSO
Performance Characteristics for 10 INCH-D-DO, 20 INCH-D-DO and 30 INCH-D-DO
Nominal
0.5
--
--
--
Minimum
--
--
--
--
Parameter (1)
Overall Accuracy (5)
Long Term Drift (one year)
Offset Position Sensitivity (1g)
Offset Warm-up Shift (3)
Maximum
1.0
0.5
0.05
0.25
Units
%FSO
%FSO
%FSO
%FSO
Performance Characteristics for 5 INCH-D-DO
Nominal
--
8
8
Minimum
12
--
--
Parameter (1)
Resolution
Conversion Speed
Supply Current
Maximum
--
16
12
Units
Bit
mS
mA
General Performance Characteristics (All Models)
Standard Pressure Ranges
Operating Pressure
-5 to 5
-10 to 10
-20 to 20
-30 to 30
-1 to 1
-5 to 5
-15 to 15
0 to 15
600 to 1100
0 to 30
0 to 30
0 to 100
0 to 100
Proof Pressure
200 inH2O
200 inH2O
200 inH2O
200 inH2O
5 PSI
10 PSI
60 PSI
60 PSI
60 PSI
90 PSI
90 PSI
200 PSI
200 PSI
Burst Pressure
300 inH2O
300 inH2O
500 inH2O
800 inH2O
15 PSI
30 PSI
120 PSI
120 PSI
120 PSI
150 PSI
150 PSI
250 PSI
250 PSI
Part Number
5 INCH-D-DO-MIL
10 INCH-D-DO-MIL
20 INCH-D-DO-MIL
30 INCH-D-DO-MIL
1 PSI-D-DO-MIL
5 PSI-D-DO-MIL
15 PSI-D-DO-MIL
15 PSI-A-DO-MIL
BARO-DO-MIL
30 PSI-G-DO-MIL
30 PSI-A-DO-MIL
100 PSI-G-DO-MIL
100 PSI-A-DO-MIL
Digital Span (4)
1
1
1
1
1
1
1
2
3
2
2
2
2
FSO (2)
5
10
20
30
1
5
15
15
1100
30
30
100
100
Units
inH2O
inH2O
inH2O
inH2O
PSI
PSI
PSI
PSIA
mBar
PSI
PSIA
PSI
PSIA
E: b i.
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Nominal
0.5
--
--
--
Minimum
--
--
--
--
Parameter (1)
Overall Accuracy (5)
Long Term Drift (one year)
Offset Position Sensitivity (1g)
Offset Warm-up Shift (3)
Maximum
1.0
0.5
0.03
0.25
Units
%FSO
%FSO
%FSO
%FSO
Performance Characteristics for 10 INCH-D-DO, 20 INCH-D-DO and 30 INCH-D-DO
Nominal
1.0
--
Minimum
--
--
Parameter (1)
Overall Accuracy (5)
Long Term Drift (one year)
Maximum
2.5
2.0
Units
mBar
mBar
Performance Characteristics for BARO-DO
Nominal
0.25
--
Minimum
--
--
Parameter (1)
Overall Accuracy (5)
Long Term Drift (one year)
Maximum
0.5
0.25
Units
%FSO
%FSO
Performance Characteristics for 1 PSI-D-DO through 100 PSI-A-DO (except BARO-DO)
Specification Notes
NOTE 1: UNLESS OTHERWISE SPECIFIED, ALL PARAMETERS ARE MEASURED AT 5.0 VOLT SUPPLY, POSITIVE PRESSURE APPLIED TO PORT B.
NOTE 2: THE DIGITAL OUTPUT IS A 16 BIT SIGNED BINARY OUTPUT IN A TWOS COMPLIMENT FORMAT. THE APPLIED PRESSURE IS COMPUTED USING THE PRESSURE
CONVERSION TABLE (BELOW). THE MODE COLUMN IDENTIFIES THE RESOLUTION OPERATING MODE OF THE DEVICE (A = STANDARD RESOLUTION, B =
HIGH RESOLUTION). FSO AND UNITS ARE SHOWN FOR EACH MODEL.
NOTE 3: SHIFT IS WITHIN THE FIRST HOUR OF EXCITATION APPLIED TO THE DEVICE.
NOTE 4: DIGITAL SPAN IS DEPENDENT ON THE RESOLUTION OPERATING MODE. REFER TO THE DIGITAL SPAN TABLE (BELOW) TO IDENTIFY THE DIGITAL SPAN OF THE
SPECIFIC MODEL. IN THE EVENT OF AN OVER-PRESSURE OR UNDER-PRESSURE CONDITION, THE DIGITAL OUTPUT WILL ONE COUNT HIGHER OR ONE COUNT
LOWER (RESPECTIVELY) TO THE LISTED DIGITAL SPAN TO INDICATE THE CONDITION.
NOTE 5: OVERALL ACCURACY INCLUDES THE COMBINED EFFECTS OF OFFSET AND SPAN SHIFTS OVER TEMPERATURE, LINEARITY, HYSTERESIS, AND OFFSET AND SPAN
CALIBRATION.
Digital Span Table
-10,399 to 10,399
-399 to 10,399
5,054 to 10,399
Mode S (Standard) Mode H (High Res)
-32,767 to 32,766
-999 to 32,766
17,501 to 32,766
Span
1
2
3
Pressure Conversion Table
Pressure Output EquationMode
S
H
P_Out Digital_Out FSO Units
10 000
,
P_Out Digital_Out FSO Units
32 767
,
Synchronous Communications
Typical synchronous communications
configuration (compatible with All
Sensors GA142 Series Digital Output
Sensors).
Typical Configurations
Asynchronous Communications
Typical asynchronous communications
configuration. The Mode pin is
interrogated at power up and if tied
low, will cause the sensor to enter
asynchronous communications mode.
This mode supports multiple sensors by
addressable commands. The Convert/
BR pin then serves to select one of two
available baud rates.
Host
System Sensor
Convert
/BR
Ready
/Mode
Clock
/SO
Data
/SI
Host
System
Sensor
(1)
Sensor
(n)
Convert/
BR
Ready/
Mode
Clock/
SO
Data/
SI
Convert/
BR
Ready/
Mode
Clock/
SO
Data/
SI
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Asynchronous Command Summary (1,2)
Command
RD
RM
RO
RP
RR
RS
WD<Mode>
WO<Offset>
U<S/N><Cmd>
Description
Read Mode Setting
Read Model Information
Read User Offset Setting
Read Pressure
Read Device Pressure Range
Read Serial Number
Write Mode Setting (“S” = Standard, “H” = High Resolution)
Write User Offset Setting
Select Unique Part for following command (for multidrop
configurations).
t1
t3
t2 t10 t2
t9t4 t8
t6 t7
Bit
15
MSB
Bit
14 Bit
13 Bit
12 Bit
11 Bit
10 Bit
9Bit
8Bit
7Bit
6Bit
5Bit
4Bit
3Bit
2Bit
1Bit
0
LSB
t5
READY [Output]
CONVERT [Input]
CLOCK [Output]
DATA [Output]
Ref Parameter Min Typ Max Units
t1 Conversion Time -- 816 msec
t2 Ready to Convert 0-- -- usec
t3 Convert to Clock 24 32 39 usec
t4 Clock Period -- 16 -- usec
t5 Clock High Time -- 8-- usec
Ref Parameter Min Typ Max Units
t6 Data Setup Time -- 3-- usec
t7 Data Hold Time -- 3-- usec
t8 Interbyte Delay -- 57 -- usec
t9 Clock to Ready -- 14 -- usec
t10 Data Transmission -- 335 -- usec
Synchronous Timing Diagram (Note: Asynchronous mode timing is per RS-232)
Response
RD=<Mode>
RM=<Model String>
RO=<hhhh>
RP=<hhhh>
RR=<Range String>
RS=<Serial Number String>
WD=<Mode>
WO=<hhhh>
U<S/N><Cmd>
Asynchronous Command Notes
NOTE 1: ALL COMMANDS AND RESPONSES ARE IN ASCII CHARACTER FORMAT AND ARE TERMINATED BY A CARRIAGE RETURN (CARRIAGE RETURNS ARE NOT SHOWN
IN COMMAND AND RESPONSE TABLE). EXAMPLE: THE READ PRESSURE COMMAND (REPRESENTED BY: RP<CR>) IS GIVEN BY THE FOLLOWING THREE BYTE
SEQUENCE: 0X52 0X50 0X0D
NOTE 2: <HHHH> IS A FOUR BYTE ASCII STRING REPRESENTING A 16-BIT SIGNED VALUE. EXAMPLE: P=2B7D REPRESENTS THE RESPONSE OF AN RP COMMAND
WITH THE PRESSURE OUTPUT OF 0X2B7D (11,133 DECIMAL) VALUE.
All Sensors reserves the right to make changes to any products herein. All Sensors does not assume any liability arising out of the application or use of any product or
circuit described herein, neither does it convey any license under its patent rights nor the rights of others.
® MICROWIRE/PLUS IS A REGISTERED TRADEMARK OF NATIONAL SEMICONDUCTOR.

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