MS5607-02BA03 TEC | Alldatasheet
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SENSOR SOLUTIONS ///MS5607-02BA03 Page 1 09/2015 MS5607-02BA03 Barometric Pressure Sensor, with stainless steel cap SPECIFICATIONS 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 The MS5607-02BA is a new generation of high resolution altimeter sensors from MEAS Switzerland with SPI and I 2C 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.
Barometric Pressure Sensor, with stainless steel cap SENSOR SOLUTIONS ///MS5607-02BA03 09/2015 Page 2
FEATURES
Mobile altimeter / barometer systems Bike computers Variometers Dataloggers Mobile phones / GPS TECHNICAL DATA Sensor Performances (VDD = 3 V) Pressure Min Typ Max Unit Range 10 1200 mbar ADC 24 bit Resolution (1) 0.13 / 0.084 / 0.054 / 0.036 / 0.024 mbar Accuracy 25°C, 750 mbar -1.5 +1.5 mbar Error band, -20°C to + 85°C, 300 to 1100 mbar (2) -2.5 +2.5 mbar Response time (1) 0.5 / 1.1 / 2.1 / 4.1 / 8.22 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 FUNCTIONAL BLOCK DIAGRAM VDD GND PS SCLK SDO SDI/SDA Meas. MUX ADC Digital Interface Memory (PROM) 128 bits SENSOR SGND +IN -IN dig. Filter Sensor Interface IC PGA CSB
Barometric Pressure Sensor, with stainless steel cap SENSOR SOLUTIONS ///MS5607-02BA03 09/2015 Page 3 PERFORMANCE SPECIFICATIONS ABSOLUTE MAXIMUM RATINGS Parameter Symbol Conditions Min. Typ. Max Unit Supply voltage VDD -0.3 +4.0 V Storage temperature TS -40 +125 °C Overpressure Pmax 6 bar Maximum Soldering Temperature Tmax 40 sec max 250 °C ESD rating Human Body Model -4 +4 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 4096 2048 1024 512 256 12.5 6.3 3.2 1.7 0.9 µA Peak supply current during conversion 1.4 mA Standby supply current at 25°C 0.02 0.14 µA VDD Capacitor From VDD to GND 100 nF ANALOG DIGITAL CONVERTER (ADC) Parameter Symbol Conditions Min. Typ. Max Unit Output Word 24 bit Conversion time tc OSR 4096 2048 1024 512 256 7.40 3.72 1.88 0.95 0.48 8.22 4.13 2.08 1.06 0.54 9.04 4.54 2.28 1.17 0.60 ms
Barometric Pressure Sensor, with stainless steel cap SENSOR SOLUTIONS ///MS5607-02BA03 09/2015 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 1100 mbar Extended Pressure Range Pext Linear Range of ADC 10 1200 mbar Total Error band, no autozero at 25°C, 700..1100 mbar at 0..50°C, 300..1100 mbar at -20..85°C, 300..1100 mbar -1.5 -2.0 -3.5 +1.5 +2.0 +3.5 mbar Total Error band, autozero at one pressure point at 25°C, 700..1100 mbar at 0..50°C, 300..1100 mbar at -20..85°C, 300..1100 mbar -0.5 -1.0 -2.5 +0.5 +1.0 +2.5 mbar Maximum error with supply voltage VDD = 1.8 V … 3.6 V -2.5 +2.5 mbar Resolution RMS OSR 4096 2048 1024 512 256 0.024 0.036 0.054 0.084 0.130 mbar Long-term stability ±1 mbar/yr Reflow soldering impact IPC/JEDEC J-STD-020C (See application note AN808) +0.4 mbar Recovering time after reflow (1) 7 days (1) Time to recovering 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 -40..85°C -0.8 -2.0 -4.0 +0.8 +2.0 +4.0 Maximum error with supply voltage Resolution RMS OSR 4096 2048 1024 512 256 0.002 0.003 0.005 0.008 0.012
Barometric Pressure Sensor, with stainless steel cap SENSOR SOLUTIONS ///MS5607-02BA03 09/2015 Page 5 PERFORMANCE SPECIFICATIONS (CONTINUED) DIGITAL INPUTS (CSB, I2C, DIN, SCLK) Parameter Symbol Conditions Min. Typ. Max Unit Serial data clock SCLK SPI protocol 20 MHz I2C protocol 400 KHz Input high voltage VIH Pins CSB 80% VDD 100% VDD V Input low voltage VIL 0% VDD 20% VDD V Input leakage current Ileak25°C Ileak85°C at 25°C 0.15 µA Input capacitance CIN 6 pF PRESSURE OUTPUTS (I2C, DOUT) Parameter Symbol Conditions Min. Typ. Max Unit Output high voltage VOH Isource = 1.0 mA 80% VDD 100% VDD V Output low voltage VOL Isink = 1.0 mA 0% VDD 20% VDD V Load capacitance CLOAD 16 pF
Barometric Pressure Sensor, with stainless steel cap SENSOR SOLUTIONS ///MS5607-02BA03 09/2015 Page 6 FUNCTIONAL DESCRIPTION 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-resis tive 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 t wo pressures. As a result, 6 coefficients necessary to compensate for process variations and temperature variations are calc ulated and stored in the 128- bit PROM of each module. These bits (partitioned into 6 coefficients) must be rea d 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 Mode Pins used High I2C SDA Low SPI 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 phas e. 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 performanc e from the module is obtained when the SPI bus is idle and without communication to other devices during the ADC conversion. VDD GND PS SCLK SDO SDI/SDA Meas. MUX ADC Digital Interface Memory (PROM) 128 bits SENSOR SGND +IN -IN dig. Filter Sensor Interface IC PGA CSB
Barometric Pressure Sensor, with stainless steel cap SENSOR SOLUTIONS ///MS5607-02BA03 09/2015 Page 7 I2C MODE The external microcontroller clocks in the data through the input SCLK (Serial CLocK) and SDA (Serial DAta). The sensor responds on the same pin SDA which is bidirectional for the I 2C bus interface. So this interface type uses only 2 signal lines and does not require a chip select, which can be favourable to reduce board space. In I2C-Mode the complement of the pin CSB (Chip Select) represents the LSB of the I2C address. It is possible to use two sensors with two different addresses on the I 2C bus. The pin CSB shall be connected to VDD or GND (do not leave unconnected!). COMMANDS The MS5607-02BA has only five basic commands: 1. Reset 2. Read PROM (128 bit of calibration words) 3. D1 conversion 4. D2 conversion 5. Read ADC result (24 bit pressure / temperature)
Barometric Pressure Sensor, with stainless steel cap SENSOR SOLUTIONS ///MS5607-02BA03 09/2015 Page 8 PRESSURE AND TEMPERATURE CALCULATION Figure 2: Flow chart for pressure and temperature reading and software compensation. Size [1] [bit] min max C1 Pressure sensitivity | SENST1 unsigned int 16 16 0 65535 46372 C2 Pressure offset | OFFT1 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 | TREF 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 - TREF = D2 - C5 * 2 8 signed int 32 25 -16776960 16777216 68 2000 = 20.00 °C OFF Offset at actual temperature [3] OFF = OFFT1 +TCO * dT = C2 *217 +(C4 *dT )/ 26 signed int 64 41 -17179344900 25769410560 5764707214 SENS Sensitivity at actual temperature [4] SENS = SENST1 + TCS* dT= C1 * 2 16 + (C3 * dT )/ 27 signed int 64 41 -8589672450 12884705280 3039050829 110002 = 1100.02 mbar Notes [1] [2] [3] [4] Calculate temperature compensated pressure 8500-4000TEMP 41 Convert calibration data into coefficients (see bit pattern of W1 to W4) Variable Example / Typical ValueRecommended variable typeDescription | Equation signed int 32Actual temperature (-40…85°C with 0.01°C resolution) TEMP =20°C +dT * TEMPSENS =2000 + dT * C6 / 223 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 - OFF) / 2 min and max have to be defined min and max have to be defined min and max have to be defined Maximal size of intermediate result during evaluation of variable 120000100058P Start Maximum values for calculation results: PMIN = 10mbar PMAX = 1200mbar TMIN = -40°C TMAX = 85°C TREF = 20°C Read calibration data (factory calibrated) from PROM Read digital pressure and temperature data Calculate temperature Calculate temperature compensated pressure Display pressure and temperature value
Barometric Pressure Sensor, with stainless steel cap SENSOR SOLUTIONS ///MS5607-02BA03 09/2015 Page 9 SECOND ORDER TEMPERATURE COMPENSATION In order to obtain best accuracy over temperature range, particularly in low temper ature, 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 and will be recalculated with the standard calculation. The second-order factors are calculated as follows: Figure 3: Flow chart for pressure and temperature to the optimum accuracy. Yes No SENS2 = 2 (TEMP – 2000)2 SENS2 = 0 SENS = SENS - SENS2 TEMP<20°C Low temperature T2 = dT / 2 OFF2 = 0 T2 = 0 OFF2 = 61 (TEMP – 2000)2 / 24 OFF = OFF - OFF2 TEMP = TEMP - T2 Low temperature High temperature Calculate pressure and temperature TEMP<-15°C NoYes SENS2 = SENS2 + 8 (TEMP + 1500)2 Low temperature OFF2 = OFF2 + 15 (TEMP + 1500)2 Very low temperature
Barometric Pressure Sensor, with stainless steel cap SENSOR SOLUTIONS ///MS5607-02BA03 09/2015 Page 13 CONVERSION SEQUENCE A conversion can be started by sending the command to MS5607-02BA. When comm and is sent to the system it stays busy until conversion is done. When conversion is finished the dat a can be accessed by sending a Read command, when an acknowledge appears from the MS5607-02BA, 24 SCLK cycles may be sent to receive all result bits. Every 8 bit the system waits for an acknowledge signal. 1 1 1 0 1 1 CSB 0 0 0 1 0 0 1 0 0 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 command cmd byte Device Address Device Address Figure 13: I2C Command to initiate a pressure conversion (OSR=4096, typ=D1) 1 1 1 0 1 1 CSB 0 0 0 0 0 0 0 0 0 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 commandDevice Address Device Address cmd byte Figure 14: I2C ADC read sequence 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 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 data data Device Address Device Address Data 23-16 Data 7 - 0Data 8 - 15 Figure 15: I2C answer from MS5607-02BA CYCLIC REDUNDANCY CHECK (CRC) MS5607-02BA contains a PROM memory with 128-Bit. A 4-bit CRC has been implemented to check the data validity in memory. The application note AN520 describes in detail CRC-4 code used. A d d D B D B D B D B D B D B D B D B D B D B D B D B D B D B D B D B 0 16 bit reserved for manufacturer
1 Coefficient 1 (16 bit unsigned)
2 Coefficient 2 (16 bit unsigned)
3 Coefficient 3 (16 bit unsigned)
4 Coefficient 4 (16 bit unsigned)
5 Coefficient 5 (16 bit unsigned)
6 Coefficient 6 (16 bit unsigned)
7 CRC
Figure 16: Memory PROM mapping
Barometric Pressure Sensor, with stainless steel cap SENSOR SOLUTIONS ///MS5607-02BA03 09/2015 Page 14 APPLICATION CIRCUIT The MS5607-02BA 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 17: Typical application circuit with SPI / I2C protocol communication MS5607-02BA MS5607-02BA
Barometric Pressure Sensor, with stainless steel cap SENSOR SOLUTIONS ///MS5607-02BA03 09/2015 Page 15 PIN CONFIGURATION Pin Name Type Function
1 VDD P Positive supply voltage
2 PS I
PS high (VDD) I2C PS low (GND) SPI
3 GND G Ground
4 CSB I Chip select (active low),
6 SDO O Serial data output
7 SDI /
I / IO Serial data input / I2C data IO
8 SCLK I Serial data clock
Figure 18: MS5607-02BA03 package outline
Barometric Pressure Sensor, with stainless steel cap SENSOR SOLUTIONS ///MS5607-02BA03 09/2015 Page 16 RECOMMENDED PAD LAYOUT Pad layout for bottom side of the MS5607-02BA soldered onto printed circuit board. SHIPPING PACKAGE Tape and Tape and reel Reserved area: Please do not route tracks between pads
Barometric Pressure Sensor, with stainless steel cap SENSOR SOLUTIONS ///MS5607-02BA03 09/2015 Page 17 MOUNTING AND ASSEMBLY CONSIDERATIONS SOLDERING Please refer to the application note AN808 available on our website for all soldering issues. MOUNTING The MS5607-02BA can be placed with automatic Pick & Place equipment usin g 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 interco nnection. This can be important for applications in watches and other special devices. CLEANING The MS5607-02BA 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 cl eaning 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 4 kV HBM (human body model). It is therefore essential to ground machines and personnel properly during assembly and handling of the devic e. The MS5607-02BA 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 MS5607-02BA VDD pin. This capacitor will stab ilize the power supply during data conversion and thus, provide the highest possible accuracy.
Barometric Pressure Sensor, with stainless steel cap SENSOR SOLUTIONS ///MS5607-02BA03 09/2015 Page 18 TYPICAL PERFORMANCE CHARACTERISTICS Absolute Pressure Accuracy, 2nd order compensation -0.8 -0.6 -0.4 -0.2 0.2 0.4 0.6 0.8 300 400 500 600 700 800 900 1000 1100 Pressure (mbar) Pressure error (mbar) 85°C 60°C 20°C 0°C -40°C Pressure Error Accuracy vs temperature -40 -20 0 20 40 60 80 Temperature (°C) Pressure error (mbar) Perror(1000,2nd order) Perror(800,2nd order) Perror(300,2nd order) Temperature Error Accuracy vs temperature -40 -20 0 20 40 60 80 Temperature (°C) Temperature error (°C) Temperature error (standard calculation)Temperature error (with 2nd order calculation)
Barometric Pressure Sensor, with stainless steel cap SENSOR SOLUTIONS ///MS5607-02BA03 09/2015 Page 19 TYPICAL PERFORMANCE CHARACTERISTICS (CONTINUED) Pressure error vs supply voltage (typical) -2.00 -1.50 -1.00 -0.50 0.00 0.50 1.00 1.50 2.00 Voltage (V) Pressure error (mbar) 1000 mbar Temperature error vs supply voltage (typical) -0.10 -0.05 0.00 0.05 0.10 0.15 0.20 0.25 0.30 0.35 0.40 Voltage (V) Temperature error (°C)
Barometric Pressure Sensor, with stainless steel cap SENSOR SOLUTIONS ///MS5607-02BA03 09/2015 Page 20
ORDERING INFORMATION
Product Code Product Art. No Delivery Form MS5607-02BA03 Barometric Pressure Sensor Thin Metal Cap MS560702BA03-00 Waffle pack MS5607-02BA03 Barometric Pressure Sensor Thin Metal Cap MS560702BA03-50 Tape and reel 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 believe d 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 obligation s 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. DA5607-02BA03_018
000056071438 ECN1741
Measurement Specialties, Inc., a TE Connectivity Company
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