MS563702BA03-50 [TE]

Low Voltage Barometric Pressure Sensor;
MS563702BA03-50
型号: MS563702BA03-50
厂家: TE CONNECTIVITY    TE CONNECTIVITY
描述:

Low Voltage Barometric Pressure Sensor

传感器 换能器
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中文:  中文翻译
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MS5637-02BA03  
Low Voltage Barometric Pressure Sensor  
SPECIFICATIONS  
QFN package 3 x 3 x 0.9 mm3  
High-resolution module, 13 cm  
Supply voltage: 1.5 to 3.6 V  
Fast conversion down to 0.5 ms  
Low power, 0.6 µA (standby 0.1 µA at 25°C)  
Integrated digital pressure sensor (24 bit ΔΣ ADC)  
Operating range: 300 to 1200 mbar, -40 to +85 °C  
I2C interface  
No external components (internal oscillator)  
The MS5637 is an ultra-compact micro altimeter. It is optimized  
for altimeter and barometer applications in Smart-phones and  
Tablet PCs. The altitude resolution at sea level is 13 cm of air. The  
sensor module includes a high-linearity pressure sensor and an  
ultra-low power 24 bit ΔΣ ADC with internal factory-calibrated  
coefficients. It provides a precise digital 24-bit pressure and  
temperature value and different operation modes that allow the  
user to optimize for conversion speed and current consumption. A  
high-resolution temperature output allows the implementation of  
an altimeter/thermometer function without any additional sensor.  
The MS5637 can be interfaced to any microcontroller with I2C-bus  
interface. The communication protocol is simple, without the need  
of programming internal registers in the device. Small dimensions  
of 3 x 3 x 0.9 mm3 allow the integration in mobile devices. This  
new sensor module generation is based on leading MEMS  
technology and latest benefits from MEAS Switzerland proven  
experience and know-how in high volume manufacturing of  
altimeter modules, which has been widely used for over a decade.  
The sensing principle employed leads to very low hysteresis and  
high stability of both pressure and temperature signal.  
SENSOR SOLUTIONS ///MS5637-02BA03  
Page 1  
09/2015  
MS5637-02BA03  
Low Voltage Barometric Pressure Sensor  
FEATURES  
FIELD OF APPLICATION  
Smart-phones  
Tablet PCs  
Personal navigation devices  
TECHNICAL DATA  
Sensor Performances (VDD = 3 V)  
Pressure  
Maximum Range  
ADC  
Min  
Typ  
Max  
Unit  
mbar  
bit  
10  
2000  
24  
0.11 / 0.062/ 0.039  
/ 0.028 / 0.021 /  
0.016  
Resolution (1)  
mbar  
Error band at 25°C,  
300 to 1200 mbar  
Error band, -20°C to + 85°C,  
300 to 1200 mbar (2)  
-2  
-4  
+2  
+4  
mbar  
mbar  
ms  
0.5 / 1.1 / 2.1 / 4.1 /  
8.22 / 16.44  
Response time (1)  
Long term stability  
1
mbar/yr  
Temperature  
Min  
Typ  
Max  
Unit  
Range  
-40  
+85  
°C  
°C  
°C  
Resolution  
Accuracy at 25°C  
<0.01  
-1  
+1  
Notes: (1) Oversampling Ratio: 256 / 512 / 1024 / 2048 / 4096 / 8192  
(2) With auto-zero at one pressure point  
FUNCTIONAL BLOCK DIAGRAM  
VDD  
I2C Bus  
Interface  
+IN  
-IN  
SENSOR  
SDA  
SCL  
dig.  
Filter  
ADC  
Memory  
(PROM)  
112 bits  
Sensor  
Interface IC  
SGND  
GND  
09/2015  
SENSOR SOLUTIONS /// MS5637-02BA03  
Page 2  
MS5637-02BA03  
Low Voltage Barometric Pressure Sensor  
PERFORMANCE SPECIFICATIONS  
ABSOLUTE MAXIMUM RATINGS  
Parameter  
Symbol Conditions  
Min.  
-0.3  
-20  
Typ.  
Max.  
+3.6  
+85  
Unit  
V
Supply voltage  
Storage temperature  
Overpressure  
VDD  
TS  
°C  
Pmax  
6
bar  
Maximum Soldering  
Temperature  
Tmax  
40 sec max  
250  
+2  
°C  
Human Body  
Model  
ESD rating  
Latch up  
-2  
kV  
mA  
JEDEC standard  
No 78  
-100  
+100  
ELECTRICAL CHARACTERISTICS  
Parameter  
Symbol  
VDD  
Conditions  
Min.  
1.5  
Typ.  
3.0  
Max.  
3.6  
Unit  
V
Operating Supply voltage  
Operating Temperature  
T
-40  
+25  
+85  
°C  
OSR  
8192  
20.09  
10.05  
5.02  
2.51  
1.26  
0.63  
4096  
2048  
1024  
512  
Supply current  
IDD  
µA  
(1 sample per sec.)  
256  
Peak supply current  
Standby supply current  
VDD Capacitor  
during conversion  
at 25°C (VDD = 3.0 V)  
from VDD to GND  
1.25  
0.01  
470  
mA  
µA  
nF  
0.1  
100  
ANALOG DIGITAL CONVERTER (ADC)  
Parameter  
Symbol Conditions  
Min.  
Typ.  
Max.  
Unit  
Output Word  
24  
bit  
OSR  
8192  
4096  
2048  
1024  
512  
16.44  
8.22  
4.13  
2.08  
1.06  
0.54  
Conversion time  
tc  
ms  
256  
09/2015  
SENSOR SOLUTIONS /// MS5637-02BA03  
Page 3  
MS5637-02BA03  
Low Voltage Barometric Pressure Sensor  
PERFORMANCE SPECIFICATIONS (CONTINUED)  
PRESSURE OUTPUT CHARACTERISTICS (VDD = 3.0 V, T = 25 °C UNLESS OTHERWISE NOTED)  
Parameter  
Conditions  
Min.  
Typ.  
Max.  
Unit  
Operating Pressure Range  
Prange  
300  
1200  
mbar  
Linear Range of  
ADC  
Extended Pressure Range  
Pext  
10  
2000  
mbar  
Relative Accuracy, autozero at  
one pressure point (1)  
700…1000 mbar at 25°C  
0.1  
mbar  
Absolute Accuracy,  
no autozero  
300..1200 mbar at 25°C  
300..1200mbar, -20..85°C  
-2  
-4  
+2  
+4  
mbar  
mbar  
OSR  
8192  
0.016  
0.021  
0.028  
0.039  
0.062  
0.11  
4096  
2048  
1024  
512  
Resolution RMS  
256  
Maximum error with supply  
voltage  
VDD = 1.5 V … 3.6 V  
0.5  
1
mbar  
Long-term stability  
mbar/yr  
IPC/JEDEC J-STD-020C  
Reflow soldering impact  
-1  
3
mbar  
days  
(See application note AN808  
on http://meas-spec.com)  
Recovering time after reflow (2)  
(1) Characterized value performed on qualification devices  
(2) Recovering time at least 66% of the reflow impact  
TEMPERATURE OUTPUT CHARACTERISTICS (VDD = 3 V, T = 25°C UNLESS OTHERWISE NOTED)  
Parameter  
Conditions  
at 25°C  
Min.  
-1  
Typ.  
Max.  
+1  
Unit  
Absolute Accuracy  
°C  
-20..85°C  
-2  
+2  
Maximum error with supply  
voltage  
VDD = 1.5 V … 3.6 V  
0.3  
°C  
°C  
OSR  
8192  
4096  
2048  
1024  
512  
0.002  
0.003  
0.004  
0.006  
0.009  
0.012  
Resolution RMS  
256  
09/2015  
SENSOR SOLUTIONS /// MS5637-02BA03  
Page 4  
MS5637-02BA03  
Low Voltage Barometric Pressure Sensor  
PERFORMANCE SPECIFICATIONS (CONTINUED)  
DIGITAL INPUTS (SDA, SCL)  
Parameter  
Symbol Conditions  
Min.  
Typ.  
Max.  
400  
Unit  
kHz  
V
Serial data clock  
Input high voltage  
Input low voltage  
Input leakage current  
Input capacitance  
SCL  
VIH  
80% VDD  
0% VDD  
100% VDD  
20% VDD  
0.1  
VIL  
V
Ileak  
CIN  
T = 25 °C  
µA  
pF  
6
DIGITAL OUTPUTS (SDA)  
Parameter  
Symbol Conditions  
Min.  
Typ.  
Max.  
Unit  
V
Output high voltage  
Output low voltage  
Load capacitance  
VOH  
Isource = 1 mA  
Isink = 1 mA  
80% VDD  
0% VDD  
100% VDD  
20% VDD  
VOL  
V
CLOAD  
16  
pF  
09/2015  
SENSOR SOLUTIONS /// MS5637-02BA03  
Page 5  
MS5637-02BA03  
Low Voltage Barometric Pressure Sensor  
FUNCTIONAL DESCRIPTION  
VDD  
I2C Bus  
Interface  
+IN  
-IN  
SENSOR  
SDA  
SCL  
dig.  
Filter  
ADC  
Memory  
(PROM)  
112 bits  
Sensor  
Interface IC  
SGND  
GND  
Figure 1: Block diagram  
GENERAL  
The MS5637 consists of a piezo-resistive sensor and a sensor interface integrated circuit. The main function of the  
MS5637 is to convert the uncompensated analogue output voltage from the piezo-resistive pressure sensor to a  
24-bit digital value, as well as providing a 24-bit digital value for the temperature of the sensor.  
FACTORY CALIBRATION  
Every module is individually factory calibrated at two temperatures and two pressures. As a result, 6 coefficients  
necessary to compensate for process variations and temperature variations are calculated and stored in the 112-  
bit PROM of each module. These bits (partitioned into 6 coefficients) must be read by the microcontroller software  
and used in the program converting D1 and D2 into compensated pressure and temperature values.  
SERIAL I2C INTERFACE  
The external microcontroller clocks in the data through the input SCL (Serial CLock) and SDA (Serial DAta). The  
sensor responds on the same pin SDA which is bidirectional for the I2C bus interface. So this interface type uses  
only 2 signal lines and does not require a chip select.  
Module reference  
MS563702BA03  
Mode  
I2C  
Pins used  
SDA, SCL  
09/2015  
SENSOR SOLUTIONS /// MS5637-02BA03  
Page 6  
MS5637-02BA03  
Low Voltage Barometric Pressure Sensor  
PRESSURE AND TEMPERATURE CALCULATION  
Start  
Maximum values for calculation results:  
PMIN = 10mbar PMAX = 2000mbar  
TMIN = -40°C TMAX = 85°C TREF = 20°C  
Read calibration data (factory calibrated) from PROM  
Size [1]  
[bit]  
Value  
Recommended  
variable type  
Example /  
Typical  
Variable Description | Equation  
min  
0
max  
Pressure sensitivity | SENST1  
C1  
C2  
C3  
C4  
C5  
C6  
unsigned int 16  
unsigned int 16  
unsigned int 16  
unsigned int 16  
unsigned int 16  
unsigned int 16  
16  
16  
16  
16  
16  
16  
65535  
65535  
65535  
65535  
65535  
65535  
46372  
43981  
29059  
27842  
31553  
28165  
Pressure offset | OFFT1  
0
Temperature coefficient of pressure sensitivity | TCS  
Temperature coefficient of pressure offset | TCO  
Reference temperature | TREF  
0
0
0
Temperature coefficient of the temperature | TEMPSENS  
0
Read digital pressure and temperature data  
D1  
D2  
Digital pressure value  
unsigned int 32  
unsigned int 32  
24  
24  
0
0
16777216  
16777216  
6465444  
8077636  
Digital temperature value  
Calculate temperature  
[2]  
Difference between actual and reference temperature  
dT = D2 - TREF = D2 - C5 * 2 8  
dT  
signed int 32  
25  
41  
-16776960  
-4000  
16777216  
8500  
68  
2000  
Actual temperature (-40…85°C with 0.01°C resolution)  
TEMP =2C+dT*TEMPSENS=2000+dT *C6 /223  
TEMP  
signed int 32  
= 20.00 °C  
Calculate temperature compensated pressure  
Offset at actual temperature [3]  
OFF  
signed int 64  
signed int 64  
41  
41  
-17179344900  
-8589672450  
25769410560  
12884705280  
5764707214  
3039050829  
OFF =OFFT1 +TCO*dT =C2 *217 +(C4*dT )/26  
Sensitivity at actual temperature [4]  
SENS =SENST1 +TCS*dT=C1 * 2 16 +(C3 *dT )/27  
SENS  
Temperature compensated pressure (10…1200mbar with  
110002  
0.01mbar resolution)  
P = D1 * SENS - OFF = (D1 * SENS / 2 21 - OFF) / 2 15  
P
signed int 32  
58  
1000  
120000  
= 1100.02 mbar  
Display pressure and temperature value  
Notes  
[1]  
Maximal size of intermediate result during evaluation of variable  
min and max have to be defined  
min and max have to be defined  
min and max have to be defined  
[2]  
[3]  
[4]  
Figure 2: Flow chart for pressure and temperature reading and software compensation.  
09/2015  
SENSOR SOLUTIONS /// MS5637-02BA03  
Page 7  
MS5637-02BA03  
Low Voltage Barometric Pressure Sensor  
SECOND ORDER TEMPERATURE COMPENSATION  
In order to obtain best accuracy over temperature range, particularly at low temperature, it is recommended to  
compensate the non-linearity over the temperature. This can be achieved by correcting the calculated temperature,  
offset and sensitivity by a second-order correction factor. The second-order factors are calculated as follows:  
Figure 3: Flow chart for pressure and temperature to the optimum accuracy.  
09/2015  
SENSOR SOLUTIONS /// MS5637-02BA03  
Page 8  
MS5637-02BA03  
Low Voltage Barometric Pressure Sensor  
I2C INTERFACE  
COMMANDS  
The MS5637 has only five basic commands:  
1. Reset  
2. Read PROM (112 bit of calibration words)  
3. D1 conversion  
4. D2 conversion  
5. Read ADC result (24 bit pressure / temperature)  
Each I2C communication message starts with the start condition and it is ended with the stop condition. The MS5637  
address is 1110110x (write : x=0, read : x=1).  
Size of each command is 1 byte (8 bits) as described in the table below. After ADC read commands, the device will  
return 24 bit result and after the PROM read 16 bit results. The address of the PROM is embedded inside of the  
PROM read command using the a2, a1 and a0 bits.  
Command byte  
hex value  
Bit number  
Bit name  
0
1
2
-
3
4
5
6
7
PRO CO  
M
Typ Ad2/ Ad1/ Ad0/ Stop  
Os2 Os1 Os0  
NV  
Command  
Reset  
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
0
1
1
1
1
1
1
1
1
1
1
1
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
1
0
0
0
0
0
0
1
1
1
1
1
1
0
0
1
0
0
0
0
1
1
0
0
0
0
1
1
0
1
0
0
1
1
0
0
0
0
1
1
0
0
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0x1E  
0x40  
0x42  
0x44  
0x46  
0x48  
0x4A  
0x50  
0x52  
0x54  
0x56  
0x58  
0x5A  
0x00  
Convert D1 (OSR=256)  
Convert D1 (OSR=512)  
Convert D1 (OSR=1024)  
Convert D1 (OSR=2048)  
Convert D1 (OSR=4096)  
Convert D1 (OSR=8192)  
Convert D2 (OSR=256)  
Convert D2 (OSR=512)  
Convert D2 (OSR=1024)  
Convert D2 (OSR=2048)  
Convert D2 (OSR=4096)  
Convert D2 (OSR=8192)  
ADC Read  
PROM Read  
Ad2 Ad1 Ad0  
0xA0 to  
0xAE  
Figure 4: Command structure  
09/2015  
SENSOR SOLUTIONS /// MS5637-02BA03  
Page 9  
MS5637-02BA03  
Low Voltage Barometric Pressure Sensor  
RESET SEQUENCE  
The Reset sequence shall be sent once after power-on to make sure that the calibration PROM gets loaded into  
the internal register. It can be also used to reset the device PROM from an unknown condition.  
The reset can be sent at any time. In the event that there is not a successful power on reset this may be caused by  
the SDA being blocked by the module in the acknowledge state. The only way to get the MS5637 to function is to  
send several SCLs followed by a reset sequence or to repeat power on reset.  
1
1
1
0
1
1
0
0
0
A
0
0
0
1
1
1
1
0
0
A
Device Address  
Device Address  
command  
cmd byte  
S
W
P
From Master  
From Slave  
S = Start Condition  
P = Stop Condition  
W = Write  
R = Read  
A = Acknowledge  
N = Not Acknowledge  
Figure 5: I2C Reset Command  
PROM READ SEQUENCE  
The read command for PROM shall be executed once after reset by the user to read the content of the calibration  
PROM and to calculate the calibration coefficients. There are in total 7 addresses resulting in a total memory of 112  
bit. Addresses contains factory data and the setup, calibration coefficients, the serial code and CRC. The command  
sequence is 8 bits long with a 16 bit result which is clocked with the MSB first. The PROM Read command consists  
of two parts. First command sets up the system into PROM read mode. The second part gets the data from the  
system.  
1
1
1
0
1
1
0
0
0
A
1
0
1
0
0
1
1
0
0
A
Device Address  
Device Address  
command  
cmd byte  
S
W
P
From Master  
From Slave  
S = Start Condition  
P = Stop Condition  
W = Write  
R = Read  
A = Acknowledge  
N = Not Acknowledge  
Figure 6: I2C Command to read memory address= 011  
1
1
1
0
1
1
0
1
0
A
X
X
X
X
X
X
X
X
0
A
X
X
X
X
X
X
X
X
0
Device Address  
Device Address  
data  
Memory bit 15 - 8  
data  
Memory bit 7 - 0  
S
R
N P  
From Master  
From Slave  
S = Start Condition  
P = Stop Condition  
W = Write  
R = Read  
A = Acknowledge  
N = Not Acknowledage  
Figure 7: I2C answer from MS5637  
CONVERSION SEQUENCE  
The conversion command is used to initiate uncompensated pressure (D1) or uncompensated temperature (D2)  
conversion. After the conversion, using ADC read command the result is clocked out with the MSB first. If the  
conversion is not executed before the ADC read command, or the ADC read command is repeated, it will give 0 as  
the output result. If the ADC read command is sent during conversion the result will be 0, the conversion will not  
stop and the final result will be wrong. Conversion sequence sent during the already started conversion process will  
yield incorrect result as well. A conversion can be started by sending the command to MS5637. When command is  
sent to the system it stays busy until conversion is done. When conversion is finished the data can be accessed by  
sending a Read command, when an acknowledge is sent from the MS5637, 24 SCL cycles may be sent to receive  
all result bits. Every 8 bits the system waits for an acknowledge signal.  
09/2015  
SENSOR SOLUTIONS /// MS5637-02BA03  
Page 10  
MS5637-02BA03  
Low Voltage Barometric Pressure Sensor  
1
1
1
0
1
1
0
0
0
A
0
1
0
0
1
0
0
0
0
A
Device Address  
Device Address  
command  
cmd byte  
S
W
P
From Master  
From Slave  
S = Start Condition  
P = Stop Condition  
W = Write  
R = Read  
A = Acknowledge  
N = Not Acknowledge  
Figure 8: I2C command to initiate a pressure conversion (OSR=4096, typ=D1)  
1
1
1
0
1
1
0
0
0
A
0
0
0
0
0
0
0
0
0
A
Device Address  
Device Address  
command  
cmd byte  
S
W
P
From Master  
From Slave  
S = Start Condition  
P = Stop Condition  
W = Write  
R = Read  
A = Acknowledge  
N = Not Acknowledge  
Figure 9: I2C ADC read sequence  
1
1
1
0
1
1
0
1
0
A
X
X
X
X
X
X
X
X
0
A
X
X
X
X
X
X
X
X
0
A
X
X
X
X
X
X
X
X
0
Device Address  
Device Address  
data  
Data 23-16  
data  
Data 15 - 8  
data  
Data 7 - 0  
S
R
N P  
From Master  
From Slave  
S = Start Condition  
P = Stop Condition  
W = Write  
R = Read  
A = Acknowledge  
N = Not Acknowledge  
Figure 10: I2C answer from MS5637  
09/2015  
SENSOR SOLUTIONS /// MS5637-02BA03  
Page 11  
MS5637-02BA03  
Low Voltage Barometric Pressure Sensor  
CYCLIC REDUNDANCY CHECK (CRC)  
MS5637 contains a PROM memory with 112-Bit. A 4-bit CRC has been implemented to check the data validity in  
memory. The C code example below describes the CRC calculation which is stored on DB12 to DB15 in the first  
PROM word.  
D
B
1
D
B
1
D
B
1
D
B
1
D
B
1
D
B
1
A
d
d
0
1
2
3
4
5
6
D
B
9
D
B
8
D
B
7
D
B
6
D
B
5
D
B
4
D
B
3
D
B
2
D
B
1
D
B
0
5
4
3
2
1
0
CRC  
Factory defined  
C1  
C2  
C3  
C4  
C5  
C6  
Figure 11: Memory PROM mapping  
C Code example for CRC-4 calculation:  
 
unsigned char crc4(unsigned int n_prom[])  
// n_prom defined as 8x unsigned int (n_prom[8])  
{
int cnt;  
unsigned int n_rem=0;  
unsigned char n_bit;  
// simple counter  
// crc reminder  
n_prom[0]=((n_prom[0]) & 0x0FFF);  
n_prom[7]=0;  
for (cnt = 0; cnt < 16; cnt++)  
{
// CRC byte is replaced by 0  
// Subsidiary value, set to 0  
// operation is performed on bytes  
// choose LSB or MSB  
if (cnt%2==1)  
else  
n_rem ^= (unsigned short) ((n_prom[cnt>>1]) & 0x00FF);  
n_rem ^= (unsigned short) (n_prom[cnt>>1]>>8);  
for (n_bit = 8; n_bit > 0; n_bit--)  
{
if (n_rem & (0x8000))  
else  
n_rem = (n_rem << 1) ^ 0x3000;  
n_rem = (n_rem << 1);  
}
}
n_rem= ((n_rem >> 12) & 0x000F);  
return (n_rem ^ 0x00);  
// final 4-bit reminder is CRC code  
}  
09/2015  
SENSOR SOLUTIONS /// MS5637-02BA03  
Page 12  
MS5637-02BA03  
Low Voltage Barometric Pressure Sensor  
APPLICATION CIRCUIT  
The MS5637 is a circuit that can be used in conjunction with a microcontroller in mobile altimeter applications.  
Figure 12: Typical application circuit  
09/2015  
SENSOR SOLUTIONS /// MS5637-02BA03  
Page 13  
MS5637-02BA03  
Low Voltage Barometric Pressure Sensor  
PIN CONFIGURATION  
Pin  
Name  
Type Function  
1
VDD  
P
Positive supply voltage  
2
3
4
SDA  
SCL  
GND  
I/O  
I2C data  
I2C clock  
Ground  
I
I
DEVICE PACKAGE OUTLINE  
Notes: (1) Dimensions in mm  
(2) General tolerance: ±0.1  
Figure 13: MS5637 package outline  
09/2015  
SENSOR SOLUTIONS /// MS5637-02BA03  
Page 14  
MS5637-02BA03  
Low Voltage Barometric Pressure Sensor  
RECOMMENDED PAD LAYOUT  
Pad layout for bottom side of the MS5637 soldered onto printed circuit board.  
Reserved area:  
Please do not route  
tracks between pads  
Figure 14: MS5637 pad layout  
SHIPPING PACKAGE  
09/2015  
SENSOR SOLUTIONS /// MS5637-02BA03  
Page 15  
MS5637-02BA03  
Low Voltage Barometric Pressure Sensor  
MOUNTING AND ASSEMBLY CONSIDERATIONS  
SOLDERING  
Please refer to the application note AN808 available on our website for all soldering issues.  
MOUNTING  
The MS5637 can be placed with automatic Pick & Place equipment using vacuum nozzles. It will not be damaged  
by the vacuum. Due to the low stress assembly the sensor does not show pressure hysteresis effects. It is important  
to solder all contact pads.  
CONNECTION TO PCB  
The package outline of the module allows the use of a flexible PCB for interconnection. This can be important for  
applications in watches and other special devices.  
CLEANING  
The MS5637 has been manufactured under clean-room conditions. It is therefore recommended to assemble the  
sensor under class 10’000 or better conditions. Should this not be possible, it is recommended to protect the sensor  
opening during assembly from entering particles and dust. To avoid cleaning of the PCB, solder paste of type “no-  
clean” shall be used. Cleaning might damage the sensor!  
ESD PRECAUTIONS  
The electrical contact pads are protected against ESD up to 2 kV HBM (human body model). It is therefore essential  
to ground machines and personnel properly during assembly and handling of the device.  
The MS5637 is shipped in antistatic transport boxes. Any test adapters or production transport boxes used during  
the assembly of the sensor shall be of an equivalent antistatic material.  
DECOUPLING CAPACITOR  
Particular care must be taken when connecting the device to the power supply. A 100nF minimum ceramic capacitor  
must be placed as close as possible to the MS5637 VDD pin. This capacitor will stabilize the power supply during  
data conversion and thus, provide the highest possible accuracy.  
09/2015  
SENSOR SOLUTIONS /// MS5637-02BA03  
Page 16  
MS5637-02BA03  
Low Voltage Barometric Pressure Sensor  
TYPICAL PERFORMANCE CHARACTERISTICS  
PRESSURE AND TEMPERATURE ERROR VERSUS PRESSURE AND TEMPERATURE  
(TYPICAL VALUES)  
PRESSURE AND TEMPERATURE ERROR VERSUS POWER SUPPLY  
(TYPICAL VALUES)  
09/2015  
SENSOR SOLUTIONS /// MS5637-02BA03  
Page 17  
MS5637-02BA03  
Low Voltage Barometric Pressure Sensor  
ORDERING INFORMATION  
Part Number / Art. Number  
Product  
Delivery Form  
Tape & Reel  
MS563702BA03-50  
Micro Altimeter Module 3x3mm  
NORTH AMERICA  
EUROPE  
ASIA  
Measurement Specialties, Inc.,  
a TE Connectivity Company  
45738 Northport Loop West  
Fremont, CA 94538  
Tel: +1 800 767 1888  
Fax: +1 510 498 1578  
Measurement Specialties (Europe), Ltd.,  
a TE Connectivity Company  
Switzerland Sàrl  
Ch. Chapons-des-Prés 11  
CH-2022 Bevaix  
Tel: +41 32 847 9550  
Measurement Specialties (China), Ltd.,  
a TE Connectivity Company  
No. 26 Langshan Road  
Shenzhen High-Tech Park (North) Nanshan  
District, Shenzhen, 518057  
China  
e-mail: pfg.cs.amer@meas-spec.com  
Website: www.meas-spec.com  
Fax: + 41 32 847 9569  
e-mail: sales.ch@meas-spec.com  
Website: www.meas-spec.com  
Tel: +86 755 3330 5088  
Fax: +86 755 3330 5099  
e-mail: pfg.cs.asia@meas-spec.com  
Website: www.meas-spec.com  
TE.com/sensorsolutions  
Measurement Specialties, Inc., a TE Connectivity company.  
Measurement Specialties, TE Connectivity, TE Connectivity (logo) and EVERY CONNECTION COUNTS are trademarks. All other logos, products and/or company names referred to herein  
might be trademarks of their respective owners.  
The information given herein, including drawings, illustrations and schematics which are intended for illustration purposes only, is believed to be reliable. However, TE Connectivity makes  
no warranties as to its accuracy or completeness and disclaims any liability in connection with its use. TE Connectivity‘s obligations shall only be as set forth in TE Connectivity‘s Standard  
Terms and Conditions of Sale for this product and in no case will TE Connectivity be liable for any incidental, indirect or consequential damages arising out of the sale, resale, use or misuse  
of the product. Users of TE Connectivity products should make their own evaluation to determine the suitability of each such product for the specific application.  
© 2015 TE Connectivity Ltd. family of companies All Rights Reserved.  
DA5637-02BA03_007  
000056372111 ECN2317  
09/2015  
SENSOR SOLUTIONS /// MS5637-02BA03  
Page 18  

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