MS5536-60C (RoHS*)
SMD Gage Pressure MODULE
•
Pressure range 0 to 60 mbar
•
0.05 mbar Resolution
•
Factory Calibrated (coefficients for
software compensation stored on-chip)
•
16 Bit ADC
•
3-wire serial interface
•
Low voltage / low power
DESCRIPTION
MS5536-60C is a family of high-resolution factory calibrated pressure sensors. The devices include a
piezoresistive pressure sensor and an ADC-Interface IC. The 3-wire serial interface ensures simple
communication with any microcontroller. The devices provide digital pressure and temperature information as
16-Bit data word each. In addition 64-Bit of individually calibrated compensation coefficients are stored allowing
for a highly accurate software compensation of process spread and temperature effects.
The devices have a very low standby current and automatically enter power down mode after each conversion.
The optimum compromise of refresh rate and average current consumption can be defined by the application
software.
FEATURES
•
•
•
•
16-Bit ADC resolution
Supply voltage 2.2 V to 3.6 V
Low supply current
No external components required
APPLICATIONS
•
•
•
•
Liquid Level metering
Medical application
Air flow measurement
HVAC application
BLOCK DIAGRAM
VDD
MCLK
Input MUX
SENSOR
+IN
dig.
Filter
Digital
Interface
ADC
DIN
DOUT
SCLK
-IN
Sensor
Interface IC
SGND
Memory
(PROM)
64 bits
GND
Fig. 1: Block Diagram MS5536-60C
*
The European RoHS directive 2002/95/EC (Restriction of the use of certain Hazardous Substances in electrical and electronic equipment) bans
the use of lead, mercury, cadmium, hexavalent chromium and polybrominated biphenyls (PBB) or polybrominated diphenyl ethers (PBDE).
DA5536-60C_003.doc
0005536C1246
ECN1126
Aug. 25th, 2008
1
PIN CONFIGURATION
1
2
3
4
5
6
7
14
13
12
11
10
9
8
14
13
12
11
10
9
8
1
2
3
4
5
6
7
Top view
Bottom view
Fig. 2: Pin configuration of MS5536-60CPJU
PIN DESCRIPTION
Pin Name
N/C
VDD
MCLK
DIN
DOUT
SCLK
GND
N/C
N/C
N/C
N/C
N/C
PV
PEN
Pin
1
2
3
4
5
6
7
8
9
10
11
12
13
14
Type
P
I
I
O
I
G
Function
Not Connected
Positive Supply Voltage
Master Clock (32.768kHz)
Data Input
Data Output
Serial Data Clock
Ground
Not Connected
Not Connected
Not Connected
Not Connected
Not Connected
Negative Programming Voltage
Programming Enable
N
I
NOTE
1)
Pins 13 (PEN) and 14 (PV) are only used by the manufacturer for calibration purposes and should not be
connected.
PRESSURE UNIT CONVERSION
mbar
60.0
1000.0
kPa
6.00
100.00
bar
0.0600
1.0000
mm Hg
45.0
750.0
PSI
0.8702
14.503
atm
0.05921
0.9869
mm H
2
O
611.9
10198
Inches H
2
O
24.086
401.45
DA5536-60C_003.doc
0005536C1246
ECN1126
Aug. 25th, 2008
2
ABSOLUTE MAXIMUM RATINGS
Parameter
Supply Voltage
Differential Overpressure (1)
Storage Temperature (1)
Symbol
V
DD
P
diff
T
Stg
Conditions
Min.
-0.3
-40
Max
4
5
+125
Unit
V
bar
o
C
NOTE
1) Storage and operation in an environment of dry and non-corrosive gases.
RECOMMENDED OPERATING CONDITIONS
(T=25°C, VDD=3.0V unless noted otherwise)
Parameter
Supply Voltage
Supply Current,
average (1)
during conversion (2)
standby (no conversion)
Current consumption into
MCLK (3)
Operating pressure range
Operating temperature
range
Conversion time
External clock signal (4)
Duty cycle of MCLK
Serial Data Clock
Symbol
V
DD
I
avg
I
SC
I
ss
Conditions
V
DD
= 3.0 V
Min.
2.2
Typ.
3.0
4
1
Max
3.6
Unit
V
µA
mA
µA
µA
mbar
°
C
ms
Hz
%
kHz
0.1
MCLK=32768Hz
0.5
0
0
MCLK=32768Hz
30000
40/60
32768
50/50
+25
60
+100
35
35000
60/40
500
p
T
a
T
conv
MCLK
SCLK
Pressure Range P devices
NOTES
1) Under the assumption of one conversion every second. Conversion means either a pressure or a
temperature measurement started by a command to the serial interface of MS5536-60C.
2) During conversion time the sensor will be switched on and off in order to reduce power consumption; the
total on time within a conversion is about 2 ms. The current specified is active only during this on time.
3) This value can be reduced by switching off MCLK while MS5536-60C is in standby mode.
4) It is strongly recommended that a crystal oscillator be used because the device is sensitive to clock jitter. A
square-wave form of the clock signal is a must.
DA5536-60C_003.doc
0005536C1246
ECN1126
Aug. 25th, 2008
3
ELECTRICAL CHARACTERISTICS
DIGITAL INPUTS
Parameter
Input High Voltage
Input Low Voltage
Signal Rise Time
Signal Fall Time
Symbol
V
IH
V
IL
t
r
t
f
Conditions
Min
80% VDD
0% VDD
200
200
(T = 0° .. 100° VDD = 2.2 V .. 3.6 V)
C
C,
Typ
Max
Unit
100% VDD
20% VDD
V
V
ns
ns
DIGITAL OUTPUTS
Parameter
Output High Voltage
Output Low Voltage
Signal Rise Time
Signal Fall Time
AD-CONVERTER
Parameter
Resolution
Linear Range
Conversion Time
INL
MCLK = 32.768 kHz
Within linear range
-5
4000
Symbol
Conditions
Min
(T = 0° .. 100° VDD = 2.2 V .. 3.6 V)
C
C,
Typ
Max
Unit
16
40000
35
+5
Bit
LSB
ms
LSB
Symbol
V
OH
V
OL
t
r
t
f
Conditions
I
source
= 0.6 mA
I
sink
= 0.6 mA
Min
80% VDD
0% VDD
200
200
(T = 0° .. 100° VDD = 2.2 V .. 3.6 V)
C
C,
Typ
Max
Unit
100% VDD
20% VDD
V
V
ns
ns
DA5536-60C_003.doc
0005536C1246
ECN1126
Aug. 25th, 2008
4
PRESSURE OUTPUT CHARACTERISTICS
With the calibration data provided by the MS5536-60C system (stored in the interface IC) the following
characteristics can be achieved:
(VDD=3.0V unless noted otherwise)
Typ
Max
Unit
Notes
0.05
T
a
= 20…40°
C
MS5536-60C: p = 0…60 mbar
T
a
= 0…+60°
C
MS5536-60C: p = 0…60 mbar
T
a
= 0…+100°
C
p = const. (range 0…60mbar)
12 months
VDD = 2.2…3.6V
-0.8
-0.5
-1
-3
-1
+0.8
+0.5
+1
+3
mbar
mbar
mbar
mbar
mbar
mbar
1
2
2
3
4
Parameter
Resolution
Pressure Accuracy
Conditions
Min
Maximum Error over
Temperature
Long-term Stability
Maximum Error over Supply
Voltage
NOTES
1) A stable pressure reading of the given resolution requires taking the average of 2 to 8 subsequent pressure
values due to noise of the ADC.
2) Specified values assume an offset adjustment at any given pressure e.g. p = 0 prior to the measurement.
3) Specified values assume quadratic temperature compensation (Refer to the paragraph ‘second-order
temperature compensation‘ in the section ‘FUNCTION’).
4) The long-term stability is measured with non-soldered devices.
TEMPERATURE OUTPUT CHARACTERISTICS
The temperature information is not required for most applications, but it is necessary to allow for temperature
compensation of the pressure output. The reference temperature is 20°
C.
Parameter
Resolution
Accuracy
Maximum Error over Supply
Voltage
T = 20°
C
T = 0 .. +100°
C
VDD = 2.2 .. 3.6 V
-0.4
Conditions
Min
0.005
-0.8
±
2
+ 0.4
Typ
0.01
Max
0.015
0.8
Unit
°
C
°
C
°
C
°
C
1
Notes
NOTE
1) With the second-order temperature compensation as described in Section “FUNCTION". See next section
for typical operating curves.
DA5536-60C_003.doc
0005536C1246
ECN1126
Aug. 25th, 2008
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