MS5805-02BA01 Datasheet by TE Connectivity Measurement Specialties

-=TE cannectivity \/RoH$ Miniature Altimeter Module 2017 W
SENSOR SOLUTIONS ///MS5805-02BA01
Page 1
06/2017
MS5805-02BA01
Miniature Altimeter Module
SPECIFICATIONS
High resolution module, 20 cm
Fast conversion down to 0.5 ms
Low power, 0.6 µA (standby < 0.15 µA at 25°C)
Integrated digital pressure sensor (24 bit ΔΣ ADC)
Supply voltage 1.8 to 3.6 V
Operating range: 300 to 1200 mbar, -40 to +85 °C
Extended pressure range: 10 to 2000 mbar
I2C interface
No external components (Internal oscillator)
Excellent long term stability
Sealing designed for 2.5 x 1mm O-ring
The MS5805-02BA is a new generation of high-resolution
altimeter sensors from MEAS Switzerland with I2C bus interface.
It is optimized for altimeters and variometers with an altitude
resolution of 20 cm. 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 MS5805-02BA can be interfaced to
virtually any microcontroller. The communication protocol is
simple, without the need of programming internal registers in the
device. 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 have 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.
750 to 1100 mbar 300101200 mbar (2)
MS5805-02BA01
Miniature Altimeter Module
SENSOR SOLUTIONS /// MS5805-02BA01
06/2015
Page 2
FEATURES
FIELD OF APPLICATION
Mobile altimeter / barometer systems
Bike computers
Adventure or multi-mode watches
Variometers
Dataloggers
TECHNICAL DATA
Pressure
Min
Typ
Max
Unit
Range
10
2000
mbar
ADC
24
bit
Resolution (1)
0.35 / 0.19 / 0.11 /
0.06 / 0.03 / 0.02
mbar
Accuracy 25°C,
750 to 1100 mbar
-2
+2
mbar
Accuracy -20°C to + 85°C,
300 to 1200 mbar (2)
-4
+4
mbar
Response time
0.5 / 1.1 / 2.1 / 4.1 /
8.22 / 16.44
ms
Long term stability
±1
mbar/yr
Temperature
Min
Typ
Max
Unit
Range
-40
+85
°C
Resolution
<0.01
°C
Accuracy
-1
+1
°C
Notes: (1) Oversampling Ratio: 256 / 512 / 1024 / 2048 / 4096/ 8192
(2) With autozero at one pressure point
FUNCTIONAL BLOCK DIAGRAM
VDD
GND
SCL
SDA
ADC
I2C Bus
Interface
Memory
(PROM)
112 bits
SENSOR
SGND
+IN
-IN
dig.
Filter
Sensor
Interface IC
MS5805-02BA01
Miniature Altimeter Module
SENSOR SOLUTIONS /// MS5805-02BA01
06/2015
Page 3
PERFORMANCE SPECIFICATIONS
ABSOLUTE MAXIMUM RATINGS
Parameter
Symbol
Conditions
Min.
Typ.
Max
Unit
Supply voltage
VDD
-0.3
+3.6
V
Storage temperature
TS
-20
+85
°C
Overpressure
Pmax
5
bar
Maximum Soldering
Temperature
Tmax
40 sec max
250
°C
ESD rating
Human Body
Model
-2
+2
kV
Latch up
JEDEC standard
No 78
-100
+100
mA
ELECTRICAL CHARACTERISTICS
Parameter
Symbol
Conditions
Min.
Typ.
Max
Unit
Operating Supply voltage
VDD
1.8
3.0
3.6
V
Operating Temperature
T
-40
+25
+85
°C
Supply current
(1 sample per sec.)
IDD
OSR 8192
4096
2048
1024
512
256
20.09
10.05
5.02
2.51
1.26
0.63
µA
Peak supply current
during conversion
1.25
mA
Standby supply current
at 25°C (VDD = 3.0 V)
0.01
0.1
µA
VDD Capacitor
From VDD to GND
100
470
nF
ANALOG DIGITAL CONVERTER (ADC)
Parameter
Symbol
Conditions
Min.
Typ.
Max
Unit
Output Word
24
bit
Conversion time
tc
OSR 8192
4096
2048
1024
512
256
16.44
8.22
4.13
2.08
1.06
0.54
ms
MS5805-02BA01
Miniature Altimeter Module
SENSOR SOLUTIONS /// MS5805-02BA01
06/2015
Page 4
PERFORMANCE SPECIFICATIONS (CONTINUED)
PRESSURE OUTPUT CHARACTERISTICS (VDD = 3 V, T = 25°C UNLESS OTHERWISE NOTED)
Parameter
Conditions
Min.
Typ.
Max
Unit
Operating Pressure Range
Prange
Full Accuracy
300
1200
mbar
Extended Pressure Range
Pext
Linear Range of
ADC
10
2000
mbar
Absolute Accuracy,
no autozero
at 25°C, 750..1100 mbar
-2
+2
mbar
Absolute Accuracy, autozero at
one pressure point
300..1200 mbar at 25°C
300..1200 mbar, -20..85°C
-2
-4
+2
+4
mbar
Maximum error with supply
voltage
VDD = 1.8 V … 3.6 V
±2.5
mbar
Long-term stability
±1
mbar/yr
Resolution RMS
OSR 8192
4096
2048
1024
512
256
0.02
0.03
0.06
0.11
0.19
0.35
mbar
Reflow soldering impact
IPC/JEDEC J-STD-020C
(See application note AN808
on http://meas-spec.com)
-1.5
mbar
Recovering time after reflow (1)
5
days
(1) Time to recover at least 66% of the reflow impact.
TEMPERATURE OUTPUT CHARACTERISTICS (VDD = 3 V, T = 25°C UNLESS OTHERWISE NOTED)
Parameter
Conditions
Min.
Typ.
Max
Unit
Absolute Accuracy
at 25°C
-20..85°C
-1
-2
+1
+2
°C
Maximum error with supply
voltage
VDD = 1.8 V … 3.6 V
±0.3
°C
Resolution RMS
(to confirm with measured
values)
OSR 8192
4096
2048
1024
512
256
0.002
0.003
0.004
0.006
0.009
0.012
°C
MS5805-02BA01
Miniature Altimeter Module
SENSOR SOLUTIONS /// MS5805-02BA01
06/2015
Page 5
PERFORMANCE SPECIFICATIONS (CONTINUED)
DIGITAL INPUTS (SDA, SCL)
Parameter
Symbol
Conditions
Min.
Typ.
Max
Unit
Serial data clock
SCL
400
kHz
Input high voltage
VIH
80% VDD
100% VDD
V
Input low voltage
VIL
0% VDD
20% VDD
V
Input leakage current
Ileak25°C
Ileak85°C
at 25°c
0.1
µA
DIGITAL OUTPUTS (I2C, DOUT)
Parameter
Symbol
Conditions
Min.
Typ.
Max
Unit
Output high voltage
VOH
Isource = 0.6 mA
80% VDD
100% VDD
V
Output low voltage
VOL
Isink = 0.6 mA
0% VDD
20% VDD
V
Load capacitance
CLOAD
16
pF
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MS5805-02BA01
Miniature Altimeter Module
SENSOR SOLUTIONS /// MS5805-02BA01
06/2015
Page 6
TYPICAL PERFORMANCE CHARACTERISTICS
PRESSURE AND TEMPERATURE ERROR VS PRESSURE AND TEMPERATURE
(TYPICAL VALUES)
PRESSURE AND TEMPERATURE ERROR VS POWER SUPPLY
(TYPICAL VALUES)
MS5805-02BA01
Miniature Altimeter Module
SENSOR SOLUTIONS /// MS5805-02BA01
06/2015
Page 7
FUNCTIONAL DESCRIPTION
VDD
GND
SCL
SDA
ADC
I2C Bus
Interface
Memory
(PROM)
112 bits
SENSOR
SGND
+IN
-IN
dig.
Filter
Sensor
Interface IC
Figure 1: Block diagram of MS5805-02BA
GENERAL
The MS5805-02BA consists of a piezo-resistive sensor and a sensor interface integrated circuit. The main
function of the MS5805-02BA 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.
COMMUNICATION INTERFACE
The MS5805-02BA has been built with I2C serial interface.
Module ref
Mode
Pins used
MS5805-02BA01
I2C
SDA, SCL
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.
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MS5805-02BA01
Miniature Altimeter Module
SENSOR SOLUTIONS /// MS5805-02BA01
06/2015
Page 8
PRESSURE AND TEMPERATURE CALCULATION
Figure 2: Flow chart for pressure and temperature reading and software compensation.
Size
[1]
[bit]
min
C1
Pressure sensitivity | SENS
T1
unsigned int 16
16
0
65535
46372
C2
Pressure offset | OFF
T1
unsigned int 16
16
0
65535
43981
C3
Temperature coefficient of pressure sensitivity | TCS
unsigned int 16
16
0
65535
29059
C4
Temperature coefficient of pressure offset | TCO
unsigned int 16
16
0
65535
27842
C5
Reference temperature | T
REF
unsigned int 16
16
0
65535
31553
C6
Temperature coefficient of the temperature | TEMPSENS
unsigned int 16
16
0
65535
28165
D1
Digital pressure value
unsigned int 32
24
0
16777216
6465444
D2
Digital temperature value
unsigned int 32
24
0
16777216
8077636
dT
Difference between actual and reference temperature
[2]
dT
= D2 - T
REF
=
D2
-
C5 * 2
8
signed int 32
25
-16776960
16777216
68
2000
= 20.00 °C
OFF
Offset at actual temperature
[3]
OFF
=
OFF
T1
+
TCO
*
dT =
C2
*
2
17
+
(C4
*
dT
)
/
2
6
signed int 64
41
-17179344900
25769410560
5764707214
SENS
Sensitivity at actual temperature
[4]
SENS
=
SENS
T1
+
TCS
*
dT
=
C1 * 2
16
+
(
C3
*
dT
)
/
2
7
signed int 64
41
-8589672450
12884705280
3039050829
110002
= 1100.02 mbar
Notes
[1]
[2]
[3]
[4]
min and max have to be defined
min and max have to be defined
Maximal size of intermediate result during evaluation of variable
120000
1000
58
P
Recommended
variable type
Description | Equation
signed int 32
Actual temperature (-40…85°C with 0.01°C resolution)
TEMP
=
20°C
+
dT
*
TEMPSENS
=
2000
+
dT
*
C6
/
2
23
Read digital pressure and temperature data
signed int 32
Temperature compensated pressure (10…1200mbar with
0.01mbar resolution)
P
= D1 * SENS - OFF =
(D1 * SENS / 2
21
- OFF) / 2
15
min and max have to be defined
Convert calibration data into coefficients (see bit pattern of W1 to W4)
Variable
Example /
Typical
Value
Calculate temperature compensated pressure
8500
-4000
TEMP
41
Start
Maximum values for calculation results:
P
MIN
= 10mbar P
MAX
= 2000mbar
T
MIN
= -40°C T
MAX
= 85°C T
REF
= 20°C
Read calibration data (factory calibrated) from PROM
Read digital pressure and temperature data
Calculate temperature
Calculate temperature compensated pressure
Pressure and temperature value first order
max
MS5805-02BA01
Miniature Altimeter Module
SENSOR SOLUTIONS /// MS5805-02BA01
06/2015
Page 9
SECOND ORDER TEMPERATURE COMPENSATION
The results of the last first order calculation are entered in the following chart to obtain the pressure and
temperature compensated with the 2nd order: P2 and TEMP2.
Yes
No
SENSi = 63 (TEMP 2000)2/ 25
SENS2 = SENS - SENSi
TEMP<20°C
Low temperature
Ti = 11 dT
2
/ 2
35
OFFi = 31 (TEMP 2000)2 / 23
OFF2 = OFF - OFFi
TEMP2 = (TEMP Ti) / 100 [°C]
Low temperature
Calculate pressure and temperature 2nd order
Pressure and temperature value first order
P2 = (( D1 * SENS2 / 221 OFF2 ) / 215 ) / 100 [mbar]
Figure 3: Flow chart for pressure and temperature to the optimum accuracy.
10
MS5805-02BA01
Miniature Altimeter Module
SENSOR SOLUTIONS /// MS5805-02BA01
06/2015
Page 10
I2C INTERFACE
COMMANDS
The MS5805-02BA 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
MS5805-02BA 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 16bit result. 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
0
1
2
3
4
5
6
7
Bit name
PRO
M
CO
NV
-
Typ
Ad2/
Os2
Ad1/
Os1
Ad0/
Os0
Stop
Command
Reset
0
0
0
1
1
1
1
0
0x1E
Convert D1 (OSR=256)
0
1
0
0
0
0
0
0
0x40
Convert D1 (OSR=512)
0
1
0
0
0
0
1
0
0x42
Convert D1 (OSR=1024)
0
1
0
0
0
1
0
0
0x44
Convert D1 (OSR=2048)
0
1
0
0
0
1
1
0
0x46
Convert D1 (OSR=4096)
0
1
0
0
1
0
0
0
0x48
Convert D1 (OSR=8192)
0
1
0
0
1
0
1
0
0x4A
Convert D2 (OSR=256)
0
1
0
1
0
0
0
0
0x50
Convert D2 (OSR=512)
0
1
0
1
0
0
1
0
0x52
Convert D2 (OSR=1024)
0
1
0
1
0
1
0
0
0x54
Convert D2 (OSR=2048)
0
1
0
1
0
1
1
0
0x56
Convert D2 (OSR=4096)
0
1
0
1
1
0
0
0
0x58
Convert D2 (OSR=8192)
0
1
0
1
1
0
1
0
0x5A
ADC Read
0
0
0
0
0
0
0
0
0x00
PROM Read
1
0
1
0
Ad2
Ad1
Ad0
0
0xA0 to
0xAE
Figure 4: Command structure
MS5805-02BA01
Miniature Altimeter Module
SENSOR SOLUTIONS /// MS5805-02BA01
06/2015
Page 11
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 MS5805 to function is
to send several SCLs followed by a reset sequence or to repeat power on reset.
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.
Figure 6: I2C Command to read memory address= 011
Figure 7: I2C answer from MS5805
1 1 1 0 1 1 0 0 0 0 0 0 1 1 1 1 0 0
S W A A P
From Master
S = Start Condition
W = Write A = Acknowledge
From Slave P = Stop Condition R = Read
N = Not Acknowledge
cmd byte
Device Address
Device Address
command
1 1 1 0 1 1 0 0 0 1 0 1 0 0 1 1 0 0
S W A A P
From Master
S = Start Condition
W = Write A = Acknowledge
From Slave P = Stop Condition R = Read
N = Not Acknowledge
Device Address
Device Address
cmd byte
command
1 1 1 0 1 1 0 1 0 X X X X X X X X 0 X X X X X X X X 0
S R A A N P
From Master
S = Start Condition
W = Write A = Acknowledge
From Slave P = Stop Condition R = Read N = Not Acknowledage
Memory bit 7 - 0
Device Address
Device Address
Memory bit 15 - 8
data
data
oxxxxxxxxoxxx x xxoxxxxxxxxc Device Address IRW El?- \Al tals IN ‘37 WU" ‘2
MS5805-02BA01
Miniature Altimeter Module
SENSOR SOLUTIONS /// MS5805-02BA01
06/2015
Page 12
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 MS5805. 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 MS5805, 24 SCL cycles may
be sent to receive all result bits. Every 8 bits the system waits for an acknowledge signal.
Figure 8: I2C command to initiate a pressure conversion (OSR=4096, typ=D1)
Figure 9: I2C ADC read sequence
Figure 10: I2C answer from MS5805
111011 0 00010010000
S W A A P
From Master
S = Start Condition
W = Write A = Acknowledge
From Slave P = Stop Condition R = Read
N = Not Acknowledge
cmd byte
Device Address
Device Address
command
111011 0 00000000000
S W A A P
From Master
S = Start Condition
W = Write A = Acknowledge
From Slave P = Stop Condition R = Read
N = Not Acknowledge
Device Address
Device Address
cmd byte
command
1
1
1
0
1
1
0
1
0
X
X
X
X
X
X
X
X
0
X
X
X
X
X
X
X
X
0
X
X
X
X
X
X
X
X
0
S
R
A
A
A
N
P
From Master
S = Start Condition
W = Write
A = Acknowledge
From Slave
P = Stop Condition
R = Read
N = Not Acknowledge
Data 7 - 0
Data 15 - 8
Device Address
Device Address
data
data
Data 23-16
data
‘3
MS5805-02BA01
Miniature Altimeter Module
SENSOR SOLUTIONS /// MS5805-02BA01
06/2015
Page 13
CYCLIC REDUNDANCY CHECK (CRC)
MS5805-02BA 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.
A
d
d
D
B
1
5
D
B
1
4
D
B
1
3
D
B
1
2
D
B
1
1
D
B
1
0
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
0
CRC
Factory defined
1
C1
2
C2
3
C3
4
C4
5
C5
6
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; // simple counter
unsigned int n_rem=0; // crc reminder
unsigned char n_bit;
n_prom[0]=((n_prom[0]) & 0x0FFF); // CRC byte is replaced by 0
n_prom[7]=0; // Subsidiary value, set to 0
for (cnt = 0; cnt < 16; cnt++) // operation is performed on bytes
{ // choose LSB or MSB
if (cnt%2==1) n_rem ^= (unsigned short) ((n_prom[cnt>>1]) & 0x00FF);
else n_rem ^= (unsigned short) (n_prom[cnt>>1]>>8);
for (n_bit = 8; n_bit > 0; n_bit--)
{
if (n_rem & (0x8000)) n_rem = (n_rem << 1) ^ 0x3000;
else n_rem = (n_rem << 1);
}
}
n_rem= ((n_rem >> 12) & 0x000F); // final 4-bit reminder is CRC code
return (n_rem ^ 0x00);
}
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MS5805-02BA01
Miniature Altimeter Module
SENSOR SOLUTIONS /// MS5805-02BA01
06/2015
Page 14
APPLICATION CIRCUIT
The MS5805-02BA is a circuit that can be used in conjunction with a microcontroller in mobile altimeter
applications. It is designed for low-voltage systems with a supply voltage of 3 V.
Figure 12: Typical application circuit with I2C protocol communication
end mmw Notes: ‘5
MS5805-02BA01
Miniature Altimeter Module
SENSOR SOLUTIONS /// MS5805-02BA01
06/2015
Page 15
PIN CONFIGURATION
Figure 13: pin configuration
Pin
Name
Type
Function
1
VDD
P
Positive supply voltage
2
SCL
I
Serial data Clock
3
SDA
IO
I2C data IO
4
GND
P
Ground
DEVICE PACKAGE OUTLINE
Figure 14: MS5805-02BA package outlines
Notes: (1) Dimensions in mm
(2) Interpret Dim and tolerance per ASME Y14.5M - 1994
(3) Angular dimensions ± 0.3°
(4) Hole locations ± 0.1
(4) Linear dimension ± 0.1
(5) Cap centering ± 0.15 from center of the ceramic
SECHON AVA flfil , 035mm Bo {fl Kc WPICAL ms 2 gm [SEE NOTE 3’ a an 4 :0 L EE NOIE L 1.7 115$! 5.52m ‘JSEE NOTE 3L 12m Au m r BB 520 L KB an L NOTE L: m SPROCKU HOLE PWCH CUMULATIVE TOLERANCE 10.2 2: CAMBER 4N COMPLIANCE waH ELA 451 3: POCKET FosmoN RELAUVE re SPROCKE‘ HOLE MEASURED AS TRUE FOSVIVONOF FOC KEY, NoL POCKET HOLE 4. IN CASE or DOUBT REFER TO 3»;ch 15
MS5805-02BA01
Miniature Altimeter Module
SENSOR SOLUTIONS /// MS5805-02BA01
06/2015
Page 16
RECOMMENDED PAD LAYOUT
Pad layout for bottom side of the MS5805 soldered onto printed circuit board.
Figure 15: MS5805 pad layout
SHIPPING PACKAGE
Figure 16: Tape and Reel
17
MS5805-02BA01
Miniature Altimeter Module
SENSOR SOLUTIONS /// MS5805-02BA01
06/2015
Page 17
MOUNTING AND ASSEMBLY CONSIDERATIONS
SOLDERING
Please refer to the application note AN808 available on our website for all soldering issues.
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 MS5805-02BA has been manufactured under cleanroom 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
MS5805-02BA 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 100 nF ceramic capacitor must
be placed as close as possible to the MS5805-02BA VDD pin. This capacitor will stabilize the power supply during
data conversion and thus, provide the highest possible accuracy.
MS5805-02BA01
Miniature Altimeter Module
SENSOR SOLUTIONS /// MS5805-02BA01
06/2015
Page 18
ORDERING INFORMATION
Part Number / Art. Number
Product
Delivery Form
MS580502BA01-50
MS5805-02BA Miniature Altimeter Module T&R
Tape& reel TOP-UP
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