DS-0009 Datasheet, PDF (3/5 Pages) All Sensors Corporation – DIGITAL OUTPUT PRESSURE SENSORS

Performance Characteristics for BARO-DO
Parameter ⁽¹⁾
Minimum
Overall Accuracy ⁽⁵⁾
--
Long Term Drift (one year)
--
Nominal
1.0
--
Maximum
2.5
2.0
Units
mBar
mBar
Performance Characteristics for 5 PSI-D-DO through 100 PSI-x-DO (except BARO-DO)
Parameter ⁽¹⁾
Minimum
Nominal
Maximum
Units
Overall Accuracy ⁽⁵⁾
--
0.25
0.5
%FSO
Long Term Drift (one year)
--
--
0.25
%FSO
Synchronous Timing Diagram (Note: Asynchronous mode timing is per RS-232. To use RS-232 requires the Maxim MA232
interface circuit for proper voltage level compatibility.)
READY [Output]
t1
t10
t2
t2
CONVERT [Input]
t3
t4
t8
t9
t5
CLOCK [Output]
t6
t7
DATA [Output]
Ref
Parameter
t1 Conversion Time
t2 Ready to Convert
t3 Convert to Clock
t4 Clock Period
t5 Clock High Time
Bit Bit Bit Bit Bit Bit Bit Bit
15 14 13 12 11 10 9 8
MSB
Bit Bit Bit Bit Bit Bit Bit Bit
76543210
LSB
Min Typ Max Units
--
8
16 msec
0
--
-- usec
24 32 39 usec
-- 24 -- usec
-- 12 -- usec
Ref
Parameter
t6 Data Setup Time
t7 Data Hold Time
t8 Interbyte Delay
t9 Clock to Ready
t10 Data Transmission
Min Typ Max Units
--
3
-- usec
--
3
-- usec
-- 70 -- usec
-- 14 -- usec
-- 476 -- usec
Typical Configurations
Synchronous Communications
Typical synchronous communications
configuration (compatible with All
Sensors GA142 Series Digital Output
Sensors).
Host
System
Sensor
Clock/SO
Data/SI
Convert/BR
Ready/Mode
All Sensors
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
DS-0009 Rev A
Sensor (1)
Clock/SO
Data/SI
Convert/BR
Ready/Mode
Sensor (n)
Clock/SO
Data/SI
Convert/BR
Ready/Mode