HS3101 [RENESAS]
High Performance Relative Humidity and Temperature Sensor;
| 型号： | HS3101 |
| 厂家： | 
RENESAS TECHNOLOGY CORP |
| 描述： | High Performance Relative Humidity and Temperature Sensor |
| 文件： | 总21页 (文件大小：819K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
Datasheet
HS310x
High Performance Relative Humidity and Temperature Sensor
The HS310x series is a highly accurate, fully
Features
calibrated relative humidity and temperature sensor.
The MEMS sensor features a proprietary sensor-
level protection, ensuring high reliability and long-
term stability.
• Humidity range: 0% to 100%RH
• Humidity accuracy: ±1.5%RH, typical (HS3101,
10 to 90%RH, 25°C)
• Hydrophobic membrane, IP67 rating
• 14-bit resolution: 0.01%RH, typical
Integrated calibration and temperature-
compensation logic provides fully corrected RH and
temperature values via a standard I2C output. No
user calibration of the output data is required.
• Independent programmable resolution settings: 8,
10, 12, 14 bits
• Fast RH response time: 1 second time constant,
typical (with 1 m/sec air flow), 4 seconds time
constant, typical (in still air)
The high accuracy, fast measurement response
time, and long-term stability combined with the
small package size makes the HS310x series ideal
for a wide number of applications ranging from
portable devices to products designed for harsh
environments.
• Temperature sensor accuracy: ±0.2°C, typical
(HS3101, HS3102, -10 to +80°C)
• Low current consumption: 1.0µA average (8-bit
resolution, 1.8V supply), 24.4µA average (14-bit
resolution, 3.3V supply), one RH and temperature
measurement per second
The HS310x series digital sensor accurately
measures relative humidity and temperature levels.
The measured data is internally corrected and
compensated for accurate operation over a wide
range of temperature and humidity levels – user
calibration is not required.
• Excellent stability against aging
• Highly robust protection from harsh environmental
conditions and mechanical shock
• Very low power consumption
The HS310x features a hydrophobic membrane
protecting it from environmental dusts, particles,
and liquids.
Applications
• Climate control systems
• Home appliances
• Weather stations
• Industrial automation
• Medical equipment
Physical Characteristics
• Supply voltage: 2.3V to 5.5V
• Extended supply voltage: 1.8V (-20°C to +125°C)
• Operating temperature: -40°C to +125°C
• 3.0 × 2.41 × 0.9 mm DFN-style 6-LGA package
Product Image
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© 2021 Renesas Electronics
HS310x Datasheet
Contents
1. Pin Information .............................................................................................................................................. 4
1.1 Pin Assignments.................................................................................................................................... 4
1.2 Pin Descriptions..................................................................................................................................... 4
2. Specifications................................................................................................................................................. 5
2.1 Absolute Maximum Ratings................................................................................................................... 5
2.2 Recommended Operating Conditions ................................................................................................... 5
3. Humidity and Temperature Sensor Performance....................................................................................... 6
3.1 Humidity Sensor Specifications............................................................................................................. 6
3.2 Temperature Sensor Specifications ...................................................................................................... 7
3.3 Sleep Current......................................................................................................................................... 7
3.4 Humidity Sensor Accuracy Graphs........................................................................................................ 8
3.5 Temperature Sensor Accuracy Graphs................................................................................................. 9
4. Sensor Interface........................................................................................................................................... 10
4.1 I2C Features and Timing...................................................................................................................... 10
4.2 Sensor Slave Address......................................................................................................................... 10
4.3 I2C Communication.............................................................................................................................. 11
4.4 Measurement Mode............................................................................................................................. 11
4.5 Measurement Requests (MR) ............................................................................................................. 11
4.6 Data Fetch (DF)................................................................................................................................... 12
4.7 Status Bits............................................................................................................................................ 13
4.8 Accessing the Non-volatile Memory .................................................................................................... 13
4.9 Setting the Measurement Resolution .................................................................................................. 14
4.10 Reading the HS310x ID Number......................................................................................................... 15
5. Calculating Humidity and Temperature Output........................................................................................ 15
6. Application Circuit....................................................................................................................................... 15
7. Package Outline Drawings.......................................................................................................................... 16
8. Soldering Information ................................................................................................................................. 16
9. PCB Layout Guide ....................................................................................................................................... 17
10. Storage and Handling.................................................................................................................................. 17
11. Quality and Reliability ................................................................................................................................. 17
12. Ordering Information................................................................................................................................... 18
13. Revision History .......................................................................................................................................... 18
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HS310x Datasheet
Figures
Figure 1. Sleep Current Variation over Temperature, VDD at 3.3V.........................................................................7
Figure 2. HS3101 RH Accuracy Tolerance at 25°C .................................................................................................8
Figure 3. HS3101 RH Accuracy over Temperature..................................................................................................8
Figure 4. HS3102 RH Accuracy Tolerance at 25°C .................................................................................................8
Figure 5. HS3102 RH Accuracy over Temperature..................................................................................................8
Figure 6. HS3103 RH Accuracy Tolerance at 25°C .................................................................................................8
Figure 7. HS3103 RH Accuracy over Temperature..................................................................................................8
Figure 8. HS3104 RH Accuracy Tolerance at 25°C .................................................................................................9
Figure 9. HS3104 RH Accuracy over Temperature..................................................................................................9
Figure 10. HS3101/HS3102 Temperature Sensor Accuracy Tolerance ..................................................................9
Figure 11. HS3103 Temperature Sensor Accuracy Tolerance ................................................................................9
Figure 12. HS3104 Temperature Sensor Accuracy Tolerance ................................................................................9
Figure 13. Timing Diagram .....................................................................................................................................10
Figure 14. START and STOP Condition Waveform...............................................................................................11
Figure 15. Measurement Request..........................................................................................................................11
Figure 16. Data Fetch.............................................................................................................................................12
Figure 17. Sequence of Commands to Enter Programming Mode ........................................................................13
Figure 18. Sequence of Commands to Change the Relative Humidity Resolution................................................14
Figure 19. Recommended Soldering Profile...........................................................................................................16
Figure 20. Milled PCB Openings for Thermal Isolation ..........................................................................................17
Tables
Table 1. I2C Timing Parameters .............................................................................................................................10
Table 2. Status Bits.................................................................................................................................................13
Table 3. Non-volatile Memory Registers ................................................................................................................13
Table 4. Register Values for Different Resolution Settings ....................................................................................14
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HS310x Datasheet
1. Pin Information
1.1
Pin Assignments
VC
3
SDA SCL
2
1
Pin 1 marker
on bottom side
4
5
6
VDD
NC
VSS
1.2
Pin Descriptions
Pin Number
Name
SCL
SDA
VC
Type
Description
1
2
3
4
5
6
Serial clock
Serial data
In/out
In/out
─
Connect a 0.1µF decoupling capacitor from VC to ground
Supply voltage
Do not connect
Ground
VDD
NC[1]
VSS
In
─
In
1. NC stands for not connected / no connection required / not bonded.
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HS310x Datasheet
2. Specifications
2.1
Absolute Maximum Ratings
The absolute maximum ratings are stress ratings only. Stresses greater than those listed below can cause
permanent damage to the device. Functional operation of the HS310x at absolute maximum ratings is not
implied. Exposure to absolute maximum rating conditions might affect device reliability.
Symbol
Parameter
Analog Supply Voltage
Conditions
Minimum
-0.3
Maximum
6.0
Unit
V
Storage Temperature Range
°C
-55
150
2.2
Recommended Operating Conditions
Important note: The HS310x series sensors are optimized to perform best in the more common temperature and
humidity ranges of 10°C to 50°C and 20% RH to 80% RH, respectively. If operated outside of these conditions
for extended periods, especially at high humidity levels, the sensors may exhibit an offset. In most cases, this
offset is temporary and will gradually disappear once the sensor is returned to normal temperature and humidity
conditions. The amount of the shift and the duration of the offset vary depending on the duration of exposure and
the severity of the relative humidity and temperature conditions. The time needed for the offset to disappear can
also be decreased by using the procedures described in Soldering Information and Storage and Handling.
Parameter
Condition
Minimum
Typical
Maximum
Unit
Operating Supply Voltage
3.3
5.5
V
Extended Operating Supply Voltage Operating temperature from -20 to 125°C
Operating Humidity Range
1.8
0
5.5
100
125
1
V
%RH
°C
Operating Temperature Range
-40
Sleep Current
-40 to 85°C
0.6
1
Sleep Mode
µA
-40 to 125°C
3
8-bit resolution
10-bit resolution
12-bit resolution
14-bit resolution
1.0
2.0
1.5
1.7
2.8
7.1
24.4
2.6
One RH + temperature
measurement/second
Average Current1
µA
5.5
7.0
20.1
24.4
0.10
0.55
1.31
4.50
16.90
Wake-up
8-bit resolution
10-bit resolution
12-bit resolution
14-bit resolution
Humidity or temperature
including the digital
compensation
Measurement Time
ms
1. Minimum, typical, and maximum average currents are provided at 1.8V, 3.3V, and 5.5V VDD respectively.
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HS310x Datasheet
3. Humidity and Temperature Sensor Performance
3.1
Humidity Sensor Specifications
Humidity Sensor Specification, TA = +25°C, VDD = 2.3V to 5.5V
Parameter
Operating Range
Condition
Minimum
Typical
Maximum
100
Unit
0
%RH
HS3101
HS3102
HS3103
HS3104
8-bit
±1.5
±1.8
±2.5
±3.5
0.7
±1.8
10% to 90%RH
20% to 80%RH
±2.0
Accuracy[ 1]
Resolution
%RH
±3.5
±4.5
1.0
%RH
14-bit
0.01
0.015
±1.0
Hysteresis
%RH
%RH
Noise in Humidity (RMS)
14-bit
0.014
±0.15
HS3101
HS3102
HS3103
HS3104
10% to 90%RH
20% to 80%RH
Non-Linearity from Response Curve
±0.25
%RH
Long-Term Stability
±0.1
4.0
±0.25
6.0
%RH/Yr
sec
20% to 80% RH Still Air
3.0
Response Time Constant[ 2 ] (τH)
1. Monotonic increases from 10 to 90%RH after sensor has been stabilized at 50%RH.
2. Initial value to 63% of total variation.
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HS310x Datasheet
3.2
Temperature Sensor Specifications
Temperature Sensor Specification, TA = +25°C, VDD = 2.3V to 5.5V
Parameter
Operating Range
Condition
Minimum
Typical
Maximum
Unit
-40
125
°C
HS3101
HS3102
HS3103
HS3104
8- bit
-10°C to 80°C
±0.2
±0.3
Accuracy
°C
±0.25
±0.3
0.9
±0.35
±0.5
1.5
0°C to 70°C
0.6
0.01
2..0
Resolution
°C
14-bit
0.015
0.025
Sec.
Response Time Constant[ 1] (τT)
Long-Term Stability
0.02
0.1
°C/Yr
°C/V
°C/V
VDD ≥ 2.8V
0.03
1.25
Supply Voltage Dependency[ 2]
1.8V < VDD < 2.8V
2.25
1. Response time depends on system thermal mass and air flow.
2. Temperature accuracy can be optimized for specified supply voltages upon request.
3.3
Sleep Current
The sleep current of the HS310x series depends on the operating temperature, as shown in the following figure.
Note that there is no significant dependence of the sleep current on the supply voltage.
Figure 1. Sleep Current Variation over Temperature, VDD at 3.3V
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HS310x Datasheet
3.4
Humidity Sensor Accuracy Graphs
The typical and maximum relative humidity sensor accuracy tolerances are shown in the following figures.
90
±2.0 ±2.5
±3.0
±2.0
70
50
30
10
±1.5
±2.0
±2.0
0
10
20
40
30
50
60
70
Temperature (°C)
Figure 2. HS3101 RH Accuracy Tolerance at 25°C
Figure 3. HS3101 RH Accuracy over Temperature
90
±2.5
±3.0
70
50
30
10
±1.8
±2.5
±2.5
0
10
20
40
30
50
60
70
Temperature (°C)
Figure 4. HS3102 RH Accuracy Tolerance at 25°C
Figure 5. HS3102 RH Accuracy over Temperature
Figure 6. HS3103 RH Accuracy Tolerance at 25°C
Figure 7. HS3103 RH Accuracy over Temperature
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HS310x Datasheet
Figure 8. HS3104 RH Accuracy Tolerance at 25°C
Figure 9. HS3104 RH Accuracy over Temperature
3.5
Temperature Sensor Accuracy Graphs
The typical and maximum temperature sensor accuracy tolerances are shown in the following figures.
Figure 10. HS3101/HS3102 Temperature Sensor
Accuracy Tolerance
Figure 11. HS3103 Temperature Sensor Accuracy
Tolerance
Figure 12. HS3104 Temperature Sensor Accuracy
Tolerance
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HS310x Datasheet
4. Sensor Interface
The HS310x series sensor uses a digital I2C-compatible communication protocol. To accommodate multiple
devices, the protocol uses two bi-directional open-drain lines: the Serial Data Line (SDA) and the Serial Clock
Line (SCL). Pull-up resistors to VDD are required. Several slave devices can share the bus; however, only one
master device can be present on the line.
4.1
I2C Features and Timing
The HS310x series sensor operates as a slave device on the I2C bus with support for 100kHz and 400kHz bit
rates. Each transmission is initiated when the master sends a 0 START bit (S), and the transmission is
terminated when the master sends a 1 STOP bit (P). These bits are only transmitted while the SCL line is HIGH.
SDA
tSUDAT
tHDSTA
tBUS
tLOW
SCL
tHDSTA
tHDDAT
tHIGH
tSUSTA
tSUSTO
Figure 13. Timing Diagram
Table 1. I2C Timing Parameters
Parameter
Symbol
fSCL
Minimum
Typical
Maximum
400
Unit
SCL Clock Frequency[1]
20
0.1
0.6
0.6
0.1
0
kHz
µs
µs
µs
µs
µs
µs
µs
µs
START Condition Hold Time Relative to SCL Edge
Minimum SCL Clock LOW Width[b]
tHDSTA
tLOW
Minimum SCL Clock HIGH Width[b]
tHIGH
START Condition Setup Time Relative to SCL Edge
Data Hold Time on SDA Relative to SCL Edge
Data Setup Time on SDA Relative to SCL Edge
STOP Condition Setup Time on SCL
tSUSTA
tHDDAT
tSUDAT
tSUSTO
tBUS
0.5
0.1
0.1
1
Bus Free Time Between STOP Condition and START Condition
1. The minimum frequency of 20kHz applies to test only; no minimum under normal operations.
2. Combined LOW and HIGH widths must equal or exceed the minimum SCL period.
4.2
Sensor Slave Address
The HS310x series default I2C address is 44HEX. The device will respond only to this 7-bit address. For more
information, see the following section.
Custom I2C address can be provided upon request.
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HS310x Datasheet
4.3
I2C Communication
The sensor transmission is initiated when the master sends a 0 START bit (S). The transmission is terminated
when the master sends a 1 STOP bit (P). These bits are only transmitted while the SCL line is HIGH (see the
following figure for waveforms).
Once the START condition has been set, the SCL line is toggled at the prescribed data rate, clocking
subsequent data transfers. Data on the SDA line is always sampled on the rising edge of the SCL line and must
remain stable while SCL is HIGH to prevent false START or STOP conditions.
START Condition
STOP Condition
SCL
SCL
START
STOP
SDA
SDA
Figure 14. START and STOP Condition Waveform
After the START bit, the master device sends the 7-bit slave address (see section 4.2) to the HS310x, followed
by the read/write bit, which indicates the transfer direction of any subsequent data. This bit is set to 1 to indicate
a read from slave to master, or set to 0 to indicate a write from master to slave.
All transfers consist of 8 bits and a response bit: 0 for Acknowledge (ACK) or 1 for Not Acknowledge (NACK).
After the ACK is received, another data byte can be transferred or the communication can be stopped with a
STOP bit.
4.4
Measurement Mode
The HS310x is factory-programmed to operate in Sleep Mode. In Sleep Mode, the sensor waits for commands
from the master before taking measurements. The digital core only performs conversions when it receives a
Measurement Request command (MR); otherwise, it is always powered down.
4.5
Measurement Requests (MR)
The MR command is required to wake up the HS310x from its Sleep Mode. Initiate the Measurement Request by
sending the 7-bit slave address followed by an eighth bit = 0 (WRITE).
A measurement cycle consists of a humidity and temperature conversion followed by the digital signal processor
(DSP) correction calculations. At the end of a measurement cycle, the digital output register will be updated
before powering down.
The output is always scaled to 14 bits. The order of the bits is big-endian.
S
1
0
0
0
1
0
0
W A
(0)
S
Wait for
Device Slave Address [6:0]
Slave ACK
Start Condition
Stop Condition
Acknowledge (ACK)
Slave Address Bit
(MSB first)
Read/Write
(Example: Write = 0)
S
S
A
W
Figure 15. Measurement Request
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HS310x Datasheet
4.6
Data Fetch (DF)
At the end of a measurement cycle, valid data can be fetched. The status bits of the DF results can be used to
detect if the data is valid or stale (see Status Bits); otherwise, wait for the measurements to complete before
performing the DF.
The DF command starts with the 7-bit slave address followed by an eighth bit = 1 (READ). The HS310x as a
slave sends an acknowledge (ACK) indicating success.
The number of data bytes returned by the HS310x is determined by when the master sends the NACK and
STOP condition. The full 14 bits of the humidity data are fetched in the first two bytes. The two MSBs of the first
byte are the status bits.
The 14 bits of temperature data follow the humidity data. The last two bits (LSBs) of the fourth data byte are
undetermined and should be masked off. In the event that the temperature data is not needed, the read can be
terminated by sending a NACK after the second byte.
Alternatively, if only 8-bit resolution is desired for the temperature output, the read can be terminated after the
third byte by issuing a NACK followed by a stop bit. The measurement time depends on the configured sensor
resolution. The following table lists examples when the resolutions for the relative humidity and temperature
measurements are the same. For different relative humidity and temperature resolution settings, the
measurement times in 3 should be used, along with the 0.1ms wake-up time.
For example, an 8-bit relative humidity measurement and a 12-bit temperature measurement results in a total
measurement time of:
0.1 ms + 0.55 ms + 4.5 ms = 5.15 ms.
RH+T measurement times (including wake-up time) at different resolution settings.
Resolution[1]
(bits)
Measurement
Time (ms)
8
1.20
2.72
10
12
14
9.10
33.90
1Same resolutions are assumed for both relative humidity and temperature.
S
1
0
0
0
1
0
0
R
(1)
A 15 14 13 12 11 10 9 8 A 7 6 5 4 3 2 1 0 N S
Device Slave Address [6:0]
Humidity Data [13:8]
Humidity Data [7:0]
Wait for
Slave ACK
Master ACK
Master ACK
Master NACK
S
1
0
0
0
1
0
0
R
(1)
A 15 14 13 12 11 10
9
8
A
7
6 5 4 3 2 1 0 A 15 14 13 12 11 10 9 8 A 7 6 5 4 3 2 1 0 N S
Device Slave Address [6:0]
Humidity Data [13:8]
Acknowledge (ACK)
Humidity Data [7:0]
Temp. Data [15:8]
Temp. Data [7:2] Mask [1:0]
Start Condition
Stop Condition
Not Acknowledge
(NACK)
Read/Write
(Read = 1)
S
S
A
2
N
R
Slave Address Bit (MSB first)
Command or Data Bit (Example: Bit 2)
Status Bit
Figure 16. Data Fetch
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HS310x Datasheet
4.7
Status Bits
The status bits are used to indicate the current state of the fetched data. The two MSBs of the humidity data byte
are the status bits (see the following table).
Table 2. Status Bits
Status Bits
00B
Definition
Valid Data: Data that has not been fetched since the last measurement cycle.
01B
Stale Data: Data that has already been fetched since the last measurement cycle.
Note: If a data fetch is performed before or during the first measurement after power-on reset, then the stale status will
be returned but this data is actually invalid since the first measurement has not been completed.
4.8
Accessing the Non-volatile Memory
The HS310x series non-volatile memory stores its measurement resolution setting and its ID number. To change
the sensor resolution or read the ID number, the master must place the HS310x into programming mode while
the chip is powering up. The following figure shows the sequence of commands needed to enter the
programming mode, which must be sent within 10ms after applying power to the sensor. The master must send
the I2C address and a Write bit followed by the command 0xA0|0x00|0x00.
Figure 17. Sequence of Commands to Enter Programming Mode
This command takes 120µs to process, after which the master has access to the non-volatile memory registers
listed in the following table. All of these registers are 16 bits wide.
To return to normal sensor operation and perform measurements, the master must send the I2C address and a
Write bit, followed by the command: 0x80|0x00|0x00.
Table 3. Non-volatile Memory Registers
Address
0x06
Register Description
Humidity Sensor Resolution – Read Register (bits [11:10])
Humidity Sensor Resolution – Write Register (bits [11:10])
Temperature Sensor Resolution – Read Register (bits [11:10])
Temperature Sensor Resolution – Write Register (bits [11:10])
Read Sensor ID – Upper 2 bytes
0x46
0x11
0x51
0x1E
0x1F
Read Sensor ID – Lower 2 bytes
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4.9
Setting the Measurement Resolution
The HS310x series relative humidity and temperature measurement resolutions can be set independently to 8,
10, 12, or 14 bits by writing to the non-volatile memory, and are initially set to 14 bits by default. The procedure
to set the humidity sensor resolution is illustrated in the following figure. The relative humidity and temperature
resolution can be read in registers 0x06 and 0x11, respectively, or written in registers 0x46 or 0x51. The
resolution information is stored in bits [11:10] of these registers, as listed in the following table. All of the other
bits in these registers must be left unchanged. As such, before writing new resolution settings, the contents of
the read registers must be read, and only bits [11:10] can be changed in the write registers. Once bits [11:10] are
changed to set the desired resolution, the entire register must be written back to the HS310x sensor.
Figure 18. Sequence of Commands to Change the Relative Humidity Resolution
Table 4. Register Values for Different Resolution Settings
Resolution Register
Bits [11:10]
Resolution
(bits)
00B
01B
10B
11B
8
10
12
14
The sensor non-volatile memory requires 120µs to load the data into the registers after step 1, and requires
14ms to write the data after step 4. Failure to comply with these processing times may result in data corruption
and introduce errors in sensor measurements. The procedure to change the temperature sensor resolution is the
same as that depicted in Figure 18, except the register address in Step 1 must be set to 0x11 and the register
address in Step 4 will be 0x51.
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4.10 Reading the HS310x ID Number
The sensor ID is a 32-bit number, and can be read in a similar fashion as illustrated in steps 1 and 2 of
Figure 18, using the appropriate register address values. The ID number is stored in two registers, with the
upper and lower 16 bits stored in register addresses 0x1E and 0x1F, respectively.
5. Calculating Humidity and Temperature Output
The entire output of the HS310x is 4 bytes. The relative humidity (in percent) and the temperature (in degrees
Celsius) are calculated using Equation 1 and Equation 2, respectively.
Humidity [13 : 0]
(EQ) 1
(EQ) 2
Humidity [%RH] =
∗100
2
14 −1
Temperature [15 : 2]
Temperature [ oC] =
∗165 − 40
2
14 −1
6. Application Circuit
VDD
RP
RP
1 SCL
VSS 6
2 SDA
3 VC
NC 5
VDD 4
0.1µF
0.1µF
RP = Pull-up resistor (2.2kΩ typical)
Figure 17. HS310x Application Circuit (Top View)
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HS310x Datasheet
7. Package Outline Drawings
The package outline drawings are located at the end of this document and are accessible from the Renesas
website. The package information is the most current data available and is subject to change without revision of
this document.
8. Soldering Information
This section discusses soldering considerations for the HS310x. When a relative humidity sensor is exposed to
the high heat associated with the soldering process, the sensor element tends to dry out. To avoid an offset in
the relative humidity readings, the sensor element must be rehydrated after the soldering process. Care must
also be taken when selecting the temperatures and durations involved in the soldering process to avoid
irreversibly damaging the sensor element.
The recommended soldering profile for a lead-free (RoHS-compliant) process is shown below.
Figure 19. Recommended Soldering Profile
It is important to ensure this temperature profile is measured at the sensor itself. Measuring the profile at a larger
component with a higher thermal mass means the temperature at the small sensor will be higher than expected.
For manual soldering, the contact time must be limited to 5 seconds with a maximum iron temperature of 350°C.
In either case, a board wash after soldering is not recommended. Therefore, if a solder paste is used, it is
strongly recommended that a “no-clean” solder paste is used to avoid the need to wash the PCB.
After soldering, the recommended rehydration conditions are either:
• A relative humidity of 75% RH at room temperature for at least 12 hours
• A relative humidity of 40% to 50% RH at room temperature for 3 to 5 days
Otherwise, in the relative humidity readings, there may be an initial offset that will slowly disappear as the sensor
is exposed to ambient conditions.
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HS310x Datasheet
9. PCB Layout Guide
When designing the PCB, undesired heat transfer paths to the HS310x series must be minimized. Excessive
heat from other components on the PCB will result in inaccurate temperature and relative humidity
measurements. As such, solid metal planes for power supplies should be avoided in the vicinity of the sensor
since these will act as thermal conductors. To further reduce the heat transfer from other components on the
board, openings can be milled into the PCB as shown in the following figure.
Figure 20. Milled PCB Openings for Thermal Isolation
10. Storage and Handling
Renesas recommends that once the sensors are removed from their original packaging, store them in metal-in
antistatic bags.
Avoid using polyethylene antistatic bags as they may affect sensor accuracy.
The nominal storage conditions are 10 to 50°C and humidity levels within 20% to 60%RH. If stored outside of
these conditions for extended periods of time, the sensor readings may exhibit an offset. The sensor can be
reconditioned and brought back to its calibration state by applying the following procedure:
1. Bake at a temperature of 100°C with a humidity < 10%RH for 10 to 12 hours.
2. Rehydrate the sensor at a humidity of 75%RH and a temperature between 20 to 30°C for 12 to 14 hours.
11. Quality and Reliability
The HS310x series is available as a qualified product for consumer and industrial market applications. All data
specified parameters are guaranteed if not stated otherwise.
X0116303 Rev.1.1
Apr 14, 2021
Page 17
HS310x Datasheet
12. Ordering Information
Part Number
Description and Package
Carrier Type
Temp. Range
HS3101
Digital Relative Humidity and Temperature Sensor.
Reel
-40°C to +125°C
±1.5%RH (Typical), 3.0 × 2.41 × 0.9mm, 6-LGA (LHG6D1)
HS3102
HS3103
HS3104
Digital Relative Humidity and Temperature Sensor.
Reel
Reel
Reel
-40°C to +125°C
-40°C to +125°C
-40°C to +125°C
±1.8%RH (Typical), 3.0 × 2.41 × 0.9mm, 6-LGA (LHG6D1)
Digital Relative Humidity and Temperature Sensor.
±2.5%RH (Typical), 3.0 × 2.41 × 0.9mm, 6-LGA (LHG6D1)
Digital Relative Humidity and Temperature Sensor.
±3.5%RH (Typical), 3.0 × 2.41 × 0.9mm, 6-LGA (LHG6D1)
13. Revision History
Revision
1.1
Date
Description
Apr 14, 2021
Mar 10, 2021
Added operating humidity range in “Recommended Operating Conditions”
Initial release.
1.0
X0116303 Rev.1.1
Apr 14, 2021
Page 18
6-LGA Package Outline Drawing
3.0 x 2.41 x 0.9 mm Body, 1.0mm Pitch
LHV6D1, PSC-4844-01, Rev 00, Page 1
1
2
3
6
5
4
© Renesas Electronics Corporation
6-LGA Package Outline Drawing
3.0 x 2.41 x 0.9 mm Body, 1.0mm Pitch
LHV6D1, PSC-4844-01, Rev 00, Page 2
6
5
4
1
2
3
Package Revision History
Description
Date Created Rev No.
Feb 27, 2020 Rev 00 Initial Release
© Renesas Electronics Corporation
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