MS5607-02BA03
Barometric Pressure Sensor, with stainless steel cap
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High resolution module, 20cm
Fast conversion down to 1 ms
Low power, 1 µA (standby < 0.15 µA)
3
QFN package 5.0 x 3.0 x 1.0 mm
Supply voltage 1.8 to 3.6 V
Integrated digital pressure sensor (24 bit ΔΣ ADC)
Operating range: 10 to 1200 mbar, -40 to +85 °C
2
I C and SPI interface up to 20 MHz
No external components (Internal oscillator)
Excellent long term stability
DESCRIPTION
The MS5607-02BA is a new generation of high resolution altimeter sensors from MEAS Switzerland with SPI
2
and I C bus interface. This barometric pressure sensor 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 MS5607-02BA can be interfaced to virtually
any microcontroller. The communication protocol is simple, without the need of programming internal registers in
the device. Small dimensions of only 5.0 mm x 3.0 mm and a height of only 1.0 mm allow for 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 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.
FEATURES
FIELD OF APPLICATION
Mobile altimeter / barometer systems
Bike computers
Variometers
Dataloggers
Mobile phones / GPS
TECHNICAL DATA
Sensor Performances (V
DD
= 3 V)
Pressure
Range
ADC
Resolution (1)
Min
10
Typ
Max
1200
Unit
mbar
bit
mbar
mbar
mbar
ms
mbar/yr
FUNCTIONAL BLOCK DIAGRAM
VDD
PS
Meas. MUX
SENSOR
+IN
dig.
Filter
Digital
Interface
PGA
ADC
CSB
SDI/SDA
SDO
SCLK
Accuracy 25°C, 750 mbar
Error band, -20°C to + 85°C
-2.5
+2.5
300 to 1100 mbar (2)
0.5 / 1.1 / 2.1 / 4.1 /
Response time (1)
8.22
Long term stability
Temperature
Range
Resolution
Accuracy
-0.8
Min
-40
<0.01
±1
Typ
Max
+85
24
0.13 / 0.084 / 0.054
/ 0.036 / 0.024
-1.5
+1.5
Unit
°C
°C
°C
-IN
Sensor
Interface IC
SGND
Memory
(PROM)
128 bits
+0.8
GND
Notes: (1) Oversampling Ratio: 256 / 512 / 1024 / 2048 / 4096
(2) With autozero at one pressure point
Sept. 26, 2012
DA5607-02BA03_018
000056071438 ECN1741
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MS5607-02BA03
Barometric Pressure Sensor, with stainless steel cap
PERFORMANCE SPECIFICATIONS
ABSOLUTE MAXIMUM RATINGS
Parameter
Supply voltage
Storage temperature
Overpressure
Maximum Soldering
Temperature
ESD rating
Latch up
Symbol
V
DD
T
S
P
max
T
max
Conditions
Min.
-0.3
-40
Typ.
Max
+4.0
+125
6
250
-4
-100
+4
+100
Unit
V
°C
bar
°C
kV
mA
40 sec max
Human Body
Model
JEDEC standard
No 78
ELECTRICAL CHARACTERISTICS
Parameter
Operating Supply voltage
Operating Temperature
Symbol
V
DD
T
Conditions
Min.
1.8
-40
Typ.
3.0
+25
12.5
6.3
3.2
1.7
0.9
1.4
0.02
Max
3.6
+85
Unit
V
°C
Supply current
(1 sample per sec.)
I
DD
Peak supply current
Standby supply current
VDD Capacitor
4096
2048
1024
512
256
during conversion
at 25°C
From VDD to GND
OSR
µA
0.14
100
mA
µA
nF
ANALOG DIGITAL CONVERTER (ADC)
Parameter
Output Word
Symbol
Conditions
OSR
Conversion time
t
c
4096
2048
1024
512
256
Min.
7.40
3.72
1.88
0.95
0.48
Typ.
24
8.22
4.13
2.08
1.06
0.54
Max
9.04
4.54
2.28
1.17
0.60
Unit
bit
ms
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Sept. 26, 2012
MS5607-02BA03
Barometric Pressure Sensor, with stainless steel cap
PERFORMANCE SPECIFICATIONS (CONTINUED)
PRESSURE OUTPUT CHARACTERISTICS (V
DD
= 3 V, T = 25°C UNLESS OTHERWISE NOTED)
Parameter
Operating Pressure Range
Extended Pressure Range
Conditions
P
range
Full Accuracy
Linear Range of
P
ext
ADC
at 25°C, 700..1100 mbar
at 0..50°C, 300..1100 mbar
at -20..85°C, 300..1100 mbar
at 25°C, 700..1100 mbar
at 0..50°C, 300..1100 mbar
at -20..85°C, 300..1100 mbar
V
DD
= 1.8 V … 3.6 V
OSR
Resolution RMS
4096
2048
1024
512
256
Min.
300
10
-1.5
-2.0
-3.5
-0.5
-1.0
-2.5
-2.5
0.024
0.036
0.054
0.084
0.130
±1
+0.4
7
Typ.
Max
1100
1200
+1.5
+2.0
+3.5
+0.5
+1.0
+2.5
+2.5
Unit
mbar
mbar
Total Error band, no autozero
mbar
Total Error band, autozero at
one pressure point
Maximum error with supply
voltage
mbar
mbar
mbar
Long-term stability
Reflow soldering impact
Recovering time after reflow (1)
IPC/JEDEC J-STD-020C
(See application note AN808)
mbar/yr
mbar
days
(1) Time to recovering at least 66% of the reflow impact
TEMPERATURE OUTPUT CHARACTERISTICS (V
DD
= 3 V, T = 25°C UNLESS OTHERWISE NOTED)
Parameter
Absolute Accuracy
Maximum error with supply
voltage
Conditions
at 25°C
-20..85°C
-40..85°C
V
DD
= 1.8 V … 3.6 V
OSR
Resolution RMS
4096
2048
1024
512
256
Min.
-0.8
-2.0
-4.0
-0.5
0.002
0.003
0.005
0.008
0.012
Typ.
Max
+0.8
+2.0
+4.0
+0.5
Unit
°C
°C
°C
DA5607-02BA03_018
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Sept. 26, 2012
MS5607-02BA03
Barometric Pressure Sensor, with stainless steel cap
PERFORMANCE SPECIFICATIONS (CONTINUED)
DIGITAL INPUTS (CSB, I C, DIN, SCLK)
Parameter
Serial data clock
Input high voltage
Input low voltage
Input leakage current
Input capacitance
Symbol
SCLK
V
IH
V
IL
I
leak25°C
I
leak85°C
C
IN
Conditions
SPI protocol
2
I C protocol
Pins CSB
Min.
Typ.
Max
20
400
100% V
DD
20% V
DD
0.15
6
Unit
MHz
KHz
V
V
µA
pF
2
80% V
DD
0% V
DD
at 25°C
PRESSURE OUTPUTS (I C, DOUT)
Parameter
Output high voltage
Output low voltage
Load capacitance
Symbol
V
OH
V
OL
C
LOAD
Conditions
I
source
= 1.0 mA
I
sink
= 1.0 mA
Min.
80% V
DD
0% V
DD
Typ.
Max
100% V
DD
20% V
DD
16
Unit
V
V
pF
2
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Sept. 26, 2012
MS5607-02BA03
Barometric Pressure Sensor, with stainless steel cap
FUNCTIONAL DESCRIPTION
VDD
PS
Meas. MUX
SENSOR
+IN
dig.
Filter
Digital
Interface
PGA
ADC
CSB
SDI/SDA
SDO
SCLK
-IN
Sensor
Interface IC
SGND
Memory
(PROM)
128 bits
GND
Figure 1: Block diagram of MS5607-02BA
GENERAL
The MS5607-02BA consists of a piezo-resistive sensor and a sensor interface IC. The main function of the
MS5607-02BA 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
128-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 INTERFACE
The MS5607-02BA has built in two types of serial interfaces: SPI and I C. Pulling the Protocol Select pin PS to
2
low selects the SPI protocol, pulling PS to high activates the I C bus protocol.
Pin PS
High
Low
2
Mode
IC
SPI
2
Pins used
SDA
SDI, SDO, CSB
SPI MODE
The external microcontroller clocks in the data through the input SCLK (Serial CLocK) and SDI (Serial Data In).
In the SPI mode module can accept both mode 0 and mode 3 for the clock polarity and phase. The sensor
responds on the output SDO (Serial Data Out). The pin CSB (Chip Select) is used to enable/disable the
interface, so that other devices can talk on the same SPI bus. The CSB pin can be pulled high after the
command is sent or after the end of the command execution (for example end of conversion). The best noise
performance from the module is obtained when the SPI bus is idle and without communication to other devices
during the ADC conversion.
DA5607-02BA03_018
000056071438 ECN1741
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Sept. 26, 2012
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