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PDF MS5607-02BA03 Data sheet ( Hoja de datos )
| Número de pieza | MS5607-02BA03 | |
| Descripción | Barometric Pressure Sensor | |
| Fabricantes | measurement | |
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MS5607-02BA03Barometric Pressure Sensor, with stainless steel cap
• High resolution module, 20cm
• Fast conversion down to 1 ms
• Low power, 1 µA (standby < 0.15 µA)
• QFN package 5.0 x 3.0 x 1.0 mm3
• 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
• I2C 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
and I2C 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
FUNCTIONAL BLOCK DIAGRAM
SENSOR +IN
-IN
Meas. MUX
PGA
ADC dig.
Filter
Digital
Interface
SGND
Sensor
Interface IC
Memory
(PROM)
128 bits
DA5607-02BA03_018
000056071438 ECN1741
TECHNICAL DATA
VDD
PS
CSB
SDI/SDA
SDO
SCLK
GND
Sensor Performances (VDD = 3 V)
Pressure
Min Typ Max
Unit
Range
10 1200 mbar
ADC
24
Resolution (1)
0.13 / 0.084 / 0.054
/ 0.036 / 0.024
Accuracy 25°C, 750 mbar -1.5
+1.5
Error band, -20°C to + 85°C
300 to 1100 mbar (2)
-2.5
+2.5
Response time (1)
0.5 / 1.1 / 2.1 / 4.1 /
8.22
bit
mbar
mbar
mbar
ms
Long term stability
±1 mbar/yr
Temperature
Min Typ Max Unit
Range
-40 +85 °C
Resolution
<0.01
°C
Accuracy
-0.8 +0.8 °C
Notes: (1) Oversampling Ratio: 256 / 512 / 1024 / 2048 / 4096
(2) With autozero at one pressure point
www.meas-spec.com
1/19
Sept. 26, 2012
1 page  
MS5607-02BA03 Barometric Pressure Sensor, with stainless steel cap
FUNCTIONAL DESCRIPTION
SENSOR +IN
-IN
Meas. MUX
PGA
ADC dig.
Filter
Digital
Interface
VDD
PS
CSB
SDI/SDA
SDO
SCLK
SGND
Sensor
Interface IC
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 I2C. Pulling the Protocol Select pin PS to
low selects the SPI protocol, pulling PS to high activates the I2C bus protocol.
Pin PS
High
Low
Mode
I2C
SPI
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
www.meas-spec.com
5/19
Sept. 26, 2012
5 Page 
MS5607-02BA03 Barometric Pressure Sensor, with stainless steel cap
Figure 9: PROM Read sequence, address = 011 (Coefficient 3).
I2C INTERFACE
COMMANDS
Each I2C communication message starts with the start condition and it is ended with the stop condition. The
MS5607-02BA address is 111011Cx, where C is the complementary value of the pin CSB. Since the IC does
not have a microcontroller inside, the commands for I2C and SPI are quite similar.
RESET SEQUENCE
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 MS5607-02BA to
function is to send several SCLKs followed by a reset sequence or to repeat power on reset.
1 1 1 0 1 1 CSB 0 0 0 0 0 1 1 1 1 0 0
Device Address
command
S Device Address W A
cmd byte
AP
From Master
From Slave
S = Start Condition
P = Stop Condition
W = Write
R = Read
A = Acknowledge
N = Not Acknowledge
Figure 10: I2C Reset Command
PROM READ SEQUENCE
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 CSB 0 0 1 0 1 0 0 1 1 0 0
Device Address
command
S Device Address W A
cmd byte
AP
From Master
From Slave
S = Start Condition
P = Stop Condition
W = Write
R = Read
A = Acknowledge
N = Not Acknowledge
Figure 11: I2C Command to read memory address= 011 (Coefficient 3)
1 1 1 0 1 1 CSB 1 0 X X X X X X X X 0 X X X X X X X X 0
Device Address
data
data
S Device Address R A Memory bit 15 - 8 A Memory bit 7 - 0 N P
From Master
From Slave
S = Start Condition
P = Stop Condition
W = Write
R = Read
A = Acknowledge
N = Not Acknowledage
Figure 12: I2C answer from MS5607-02BA
DA5607-02BA03_018
000056071438 ECN1741
www.meas-spec.com
11/19
Sept. 26, 2012
11 Page | ||
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| PDF Descargar | [ Datasheet MS5607-02BA03.PDF ] | |
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