MS8607-02BA01
PHT Combination Sensor
SPECIFICATIONS
• Integrated pressure, humidity and temperature sensor
• QFN package 5 x 3 x 1 mm3
• Operating range: 10 to 2000 mbar, 0%RH to 100%RH,
-40 to 85 °C
• High-resolution module: 0.016 mbar, 0.04%RH, 0.01°C
• Supply voltage: 1.5 to 3.6 V
• Fully factory calibrated sensor
• I2C interface
The MS8607 is the novel digital combination sensor of MEAS
providing 3 environmental physical measurements all-in-one:
pressure, humidity and temperature (PHT). This product is
optimal for applications in which key requirements such as ultralow power consumption, high PHT accuracy and compactness
are critical. High pressure resolution combined with high PHT
linearity makes the MS8607 an ideal candidate for environmental
monitoring and altimeter in smart phones and tablet PC, as well
as PHT applications such as HVAC and weather stations. This
new sensor module generation is based on leading MEMS
technologies and latest benefits from Measurement Specialties
proven experience and know-how in high volume manufacturing
of sensor modules, which has been widely used for over a
decade.
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PHT Combination Sensor
FEATURES
FIELD OF APPLICATION
•
•
•
•
•
Smart phones and Tablet PCs
HVAC applications
Weather station
Printers
Home Appliance and humidifiers
TECHNICAL DATA
Sensor Performances (VDD = 3 V)
Characteristics
Pressure [mbar]
Min
Max. Operating Range
Typ
10
Relative Humidity [%RH]
Max
Min
2000
0
300…1100mbar
Absolute Accuracy @25°C
-2
Resolution (highest mode)
SENSOR SOLUTIONS ///MS8607-02BA01
Max
Min
100
-40
20…80%RH
2
0.016
Typ
Temperature [°C]
-3
06/2017
Max
+85
@ 25°C
3
0.04
Typ
-1
1
0.01
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MS8607-02BA01
PHT Combination Sensor
PERFORMANCE SPECIFICATIONS
ABSOLUTE MAXIMUM RATINGS
Parameter
Supply voltage
Symbol
VDD
Storage temperature
Overpressure
Maximum Soldering
Temperature
ESD rating
Latch up
Condition
Min.
-0.3
-20
TS
Pmax
Typ.
Max.
3.6
Unit
V
85
°C
bar
250
°C
2
100
kV
mA
Max.
3.6
+85
Unit
V
°C
nF
6
Tmax
40 sec max
-2
Human Body Model
JEDEC standard No 78
-100
ELECTRICAL CHARACTERISTICS
Parameter
Operating Supply voltage
Operating Temperature
VDD to GND Capacitor
Supply current P or T
(1 Pressure or temperature
conversion per sec.)
Symbol
VDD
T
General electrical characteristics
Condition
Min.
Typ.
1.5
3.0
-40
+25
220
470
IPT
OSR 8192
4096
2048
1024
512
256
IH
OSR 8192
4096
2048
1024
20.09
10.05
5.02
2.51
1.26
0.63
µA
6.22
Supply current H
(1 humidity conversion per
sec.)
Peak supply current
(during P or T conversion)
Peak supply current
(during humidity conversion)
Standby supply current
ADC Output Word
ADC Conversion time(3)
3.11
0.78
@ 25°C, V DD = 3V
1.25
mA
0.45
mA
0.03
Pressure and temperature
Condition
Min.
Typ.
Max.
24
OSR 8192
16.44
17.2
4096
8.22
8.61
2048
4.13
4.32
1024
2.08
2.17
512
1.06
1.10
256
0.54
0.56
Heater: power dissipation
and temperature increase
over humidity sensor
Low battery indicator
accuracy
µA
1.56
Min.
Relative humidity
Typ.
Max.
16
13.82
15.89
8.03
6.98
3.55
4.08
1.84
2.12
2 - 13
0.5 - 1.5
±50 (Typ.)
0.24
µA
Unit
bit
ms
mW
°C
mV
(3): Maximum values must be applied to determine waiting times in I2C communication
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PHT Combination Sensor
PERFORMANCE SPECIFICATIONS (CONTINUED)
PHT CHARACTERISTICS (VDD = 3.0 V, T = 25 °C UNLESS OTHERWISE NOTED )
Operating Range
Extended Range (4)
Absolute Accuracy
@25°C
Absolute Accuracy
Relative Accuracy
@25°C
OSR 8192
4096
2048
Resolution
RMS(7)
1024
512
256
Maximum error with
supply voltage
(Condition)
Long-term stability
Reflow soldering impact
Recovering time after
reflow (8)
Pressure [mbar]
Typ.
Max.
1200
2000
300…1100 mbar
-2
2
300…1100mbar, -20...85°C
-4
4
700…1000 mbar (5)
±0.1 (6)
0.016
0.021
0.028
0.039
0.062
0.11
Relative Humidity [%RH]
Min.
Typ.
Max.
0.04
0.7
0.002
0.003
0.004
0.006
0.009
0.012
±0.5
±0.25
±0.3
Min.
300
10
0
Min.
100
-40
3
-1
5
-2
20 …80%RH
-3
85
@25°C
5…95%RH
-5
Temperature [°C]
Typ.
Max.
1
-20...85°C
2
(VDD = 1.5 V … 3.6 V)
Response Time
±1 / year
-0.6
±0.5 / year
2
5 days
5 days
< 5ms
5 sec.
±0.3 / year
(at 63% of signal recovery,
From 33%RH to 75%RH,
At 3m/s air flow)
(Condition)
(4): Linear range of ADC
(5): Auto-zero at one pressure point
(6): Characterized value performed on qualification devices
(7): Characterization performed sequentially (P&T conversion followed by H conversion)
(8): Recovering time at least 66% of the reflow impact
DIGITAL INPUTS (SDA, SCL)
Parameter
Serial data clock
Input high voltage
Input low voltage
Symbol
SCL
VIH
VIL
Conditions
Symbol
VOH
VOL
CLOAD
Conditions
Isource = 1 mA
Isink = 1 mA
Min.
Typ.
Max.
400
100% VDD
20% VDD
Unit
kHz
V
V
Typ.
Max.
100% VDD
20% VDD
Unit
V
V
pF
80% VDD
0% VDD
DIGITAL OUTPUTS (SDA)
Parameter
Output high voltage
Output low voltage
Load Capacitance
SENSOR SOLUTIONS ///MS8607-02BA01
Min.
80% VDD
0% VDD
16
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PHT Combination Sensor
PERFORMANCE CHARACTERISTICS
PHT ACCURACY AND PHT ERROR VERSUS SUPPLY VOLTAGE (TYPICAL)
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PHT Combination Sensor
FUNCTIONAL DESCRIPTION
GENERAL
The MS8607 includes two sensors with distinctive MEMS technologies to measure pressure, humidity and
temperature. The first sensor is a piezo-resistive sensor providing pressure and temperature. The second sensor
is a capacitive type humidity sensor providing relative humidity. Each sensor is interfaced to a ∆Σ ADC integrated
circuit for the digital conversion. The MS8607 converts both analog output voltages to a 24-bit digital value for the
pressure and temperature measurements, and a 12-bit digital value for the relative humidity measurement.
SERIAL I2C INTERFACE
The external microcontroller clocks in the data through the input SCL (Serial CLock) and SDA (Serial DAta). Both
sensors respond on the same pin SDA which is bidirectional for the I2C bus interface. Two distinct I2C addresses
are used (one for pressure and temperature, the other for relative humidity, see Figure 2).
Module reference
MS860702BA01
Mode
I2C
Pins used
SDA, SCL
Figure 1: Communication Protocol and pins
Sensor type
Pressure and Temperature P&T
Relative Humidity RH
I2C address (binary value)
1110110
1000000
I2C address (hex. value)
0x76
0x40
Figure 2: I2C addresses
COMMANDS FOR PRESSURE AND TEMPERATURE
For pressure and temperature sensing, five commands are possible:
1. Reset
2. Read PROM P&T (112 bit of calibration words)
3. D1 conversion
4. D2 conversion
5. Read ADC (24 bit pressure / temperature)
Each command is represented over 1 byte (8 bits) as described in Figure 3. 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 read PROM P&T command using the a2, a1 and a0 bits.
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Command byte
7
6
PROM CONV
Bit number
Bit name
Command
Reset
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 P&T
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
hex value
5
-
4
Typ
3
Ad2/
Os2
2
Ad1/
Os1
1
Ad0/
Os0
0
Stop
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
Ad2
1
0
0
1
1
0
0
0
0
1
1
0
0
0
Ad1
1
0
1
0
1
0
1
0
1
0
1
0
1
0
Ad0
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
0xA0 to 0xAE
Figure 3: Command structure for pressure and temperature sensing
COMMANDS FOR RELATIVE HUMIDITY
For relative humidity sensing, six commands are possible:
1. Reset
2. Write user register
3. Read user register
4. Measure RH (Hold master)
5. Measure RH (No Hold master)
6. PROM read RH
Each I2C communication message starts with the start condition and it is ended with the stop condition. The I2C
address for humidity sensing is 1000000. The address of the PROM is embedded inside of the PROM read
command using the a2, a1 and a0 bits. Figure 4 shows the commands with their respective code:
Bit number
Command :
1. Reset
2. Write user register
3. Read user register
4. Measure RH (Hold master)
5. Measure RH (No Hold master)
6. PROM read RH
8 bits Command
7
6
5
4
1
1
1
1
1
1
1
1
1
1
1
0
1
1
1
1
1
1
1
0
0
0
1
0
hex value
3
2
1
0
1
0
0
0
0
adr2
1
1
1
1
1
adr1
1
1
1
0
0
adr0
0
0
1
1
1
0
0xFE
0xE6
0xE7
0xE5
0xF5
0xA0 to 0xAE
Figure 4: command structure for relative humidity sensing
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PHT Combination Sensor
USER REGISTER
The user register is used to configure several operating modes of the humidity sensor (resolution measurements,
heater) and monitor the battery state. The possible configurations of the user register are described in the table
below.
User register Bit
Bit Configuration/Coding
Default value
bit 7, bit 0
Measurement resolution
‘00’
Bit 7
0
0
1
1
bit 6
bit 3,4,5
bit 2
bit 1
Bit 0
0
1
0
1
OSR
4096
2048
1024
256
Resolution
Highest
Lowest
Battery state:
‘0’ VDD>2.25V
‘1’ VDD>1]>>8);
for (n_bit = 8; n_bit > 0; n_bit--)
{
if (n_rem & (0x8000))
n_rem = (n_rem 12) & 0x000F);
// final 4-bit remainder is CRC code
return (n_rem ^ 0x00);
}
C CODE EXAMPLE FOR CRC-4 CALCULATION (RH MEMORY PROM)
unsigned char crc4_RH(unsigned int n_prom[])
{
int cnt;
unsigned int n_rem=0;
unsigned char n_bit;
// n_prom defined as 8x unsigned int (n_prom[8])
// simple counter
// crc remainder
n_prom[6]=((n_prom[6]) & 0xFFF0);
// 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 12) & 0x000F);
// final 4-bit remainder is CRC code
return (n_rem ^ 0x00);
}
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PHT Combination Sensor
PIN CONFIGURATION
Type
Function
1
Nam
e
VDD
P
Positive supply voltage
3
GND
G
Ground
7
SDA
IO
I2C data IO
8
SCL
SCL
NC
I
Serial data clock
Pin
2,4,5,6
DEVICE PACKAGE OUTLINE
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RECOMMENDED PAD LAYOUT
Pad layout for bottom side of the MS8607-02BA01 soldered onto printed circuit board.
Reserved area:
Please do not route
tracks between pads
SHIPPING PACKAGE
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PHT Combination Sensor
MOUNTING AND ASSEMBLY CONSIDERATIONS
SOLDERING
Please refer to the application note AN808 available on our website for all soldering issues.
MOUNTING
The MS8607 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 MS8607 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 MS8607 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 minimum 220nF ceramic
capacitor must be placed as close as possible to the MS8607 VDD pin. This capacitor will stabilize the power
supply during data conversion and thus, provide the highest possible accuracy.
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PHT Combination Sensor
ORDERING INFORMATION
Part Number / Art. Number
MS860702BA01-50
Product
Delivery Form
PHT Combination Sensor Module 5x3mm
Tape & Reel
NORTH AMERICA
EUROPE
ASIA
Measurement Specialties, Inc.,
a TE Connectivity company
Tel: 800-522-6752
Email: customercare.frmt@te.com
Measurement Specialties (Europe), Ltd.,
a TE Connectivity Company
Tel: 800-440-5100
Email: customercare.bevx@te.com
Measurement Specialties (China) Ltd.,
a TE Connectivity company
Tel: 0400-820-6015
Email: customercare.shzn@te.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.
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TE Connectivity Ltd. family of companies
All Rights Reserved.
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