DS-0355 Datasheet, PDF (3/16 Pages) All Sensors Corporation – DLH Series Low Voltage Digital Pressure Sensors

I2C / SPI Electrical Parameters for DLH Series
Parameter
Symbol Min
Input High Level
-
80.0
Input Low Level
-
0
Output Low Level
-
-
I2C Pull-up Resistor
-
1000
I2C Load Capacitance on SDA, @ 400 kHz
CSDA
-
I2C Input Capacitance (each pin)
CI2C_IN
-
I2C Address
Pressure Output Transfer Function
Typ Max
-
100
-
20.0
-
10.0
-
-
-
200
-
10.0
41
Units
% of Vs
% of Vs
% of Vs
Ω
pF
pF
decimal
Notes
5
5
5
5
5
5
������������_��� � ��2� � �����^��₂^{���}_� ^{�����}� � �������_���
Where:
����_{���}
Is the sensor 24‐bit digital output.
��_{���}
Is the specified digital offset
For Gage Operating Range sensors:
For Differential Operating Range sensors:
0.1 * 2²⁴
0.5 * 2²⁴
�������_���
The sensor Full Scale Span in inches H₂O
For Gage Operating Range sensors: Full Scale Pressure
For Differential Operating Range sensors: 2 x Full Scale Pressure.
Temperature Output Transfer Function
����������� ��� � �����^�₂^{����∗ 125�} � ��
Where:
����_{���}
The sensor 24‐bit digital temperature output.
(Note that only the upper 16 bits are significant)
Specification Notes
note 1: THE SPAN IS THE ALGEBRAIC DIFFERENCE BETWEEN FULL SCALE DECIMAL COUNTS AND THE OFFSET DECIMAL COUNTS.
note 2: TOTAL ERROR BAND CONSISTS OF OFFSET AND SPAN TEMPERATURE AND CALIBRATION ERRORS, LINEARITY AND PRESSURE HYSTERESIS ERRORS, OFFSET
WARM-UP SHIFT, OFFSET POSITION SENSITIVITY AND LONG TERM OFFSET DRIFT ERRORS.
note 3: SHIFT IS RELATIVE TO 25C.
note 4: SHIFT IS WITHIN THE FIRST HOUR OF EXCITATION APPLIED TO THE DEVICE.
note 5: PARAMETER IS CHARACTERIZED AND NOT 100% TESTED.
note 6: MEASURED AT ONE-HALF FULL SCALE RATED PRESSURE USING BEST STRAIGHT LINE CURVE FIT.
note 7: DATA UPDATE TIME IS EXCLUSIVE OF COMMUNICATIONS, FROM COMMAND RECEIVED TO END OF BUSY STATUS. THIS CAN BE OBSERVED AS EOC PIN
LOW- STATE DURATION.
note 8: AVERAGE CURRENT CAN BE ESTIMATED AS : ICC_Idle + (t_DU / Reading Interval) * ICCActive). REFER TO FIGURE 2 FOR ACTIVE AND IDLE CONDITIONS OF THE
SENSOR (THE ACTIVE STATE IS WHILE EOC PIN IS LOW).
note 9: THE SENSOR IS CALIBRATED WITH A 3.3V SUPPLY HOWEVER, AN INTERNAL REGULATOR ALLOWS A SUPPLY VOLTAGE OF 1.68V TO 3.6V TO BE USED
WITHOUT AFFECTING THE OVERALL SPECIFICATIONS. THIS ALLOWS DIRECT OPERATION FROM A BATTERY SUPPLY.
All Sensors
DS-0355 Rev A
Page 3