High Performance Relative Humidity and Temperature Sensor HS300x Datasheet Description Features The HS300x series is a highly accurate, fully calibrated relative humidity and temperature sensor. The MEMS sensor features a proprietary sensor-level protection, ensuring high reliability and long-term stability. RH accuracy: 1.5%RH, typical (HS3001, 10 to 90%RH, 25C) 14-bit resolution: 0.01%RH, typical Fast RH response time: 6 seconds, typical Temperature sensor accuracy: 0.2C, typical (HS3001, HS3002, -10 to +80C) 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. Low current consumption: 24.4A average (one RH and temperature measurement per second, 14-bit resolution, 3.3V supply) The high accuracy, fast measurement response time, and longterm stability combined with the small package size makes the HS300x series ideal for a wide number of applications ranging from portable devices to products designed for harsh environments. Excellent stability against aging Highly robust protection from harsh environmental conditions and mechanical shock The HS300x 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. Very low power consumption Physical Characteristics Extended supply voltage: 2.3V to 5.5V Typical Applications Operating temperature: -40C to +125C 3.0 x 2.41 x 0.8 mm DFN-style 6-LGA package Climate control systems Home appliances Weather stations Product Image Industrial automation Medical equipment Automotive cabin climate control (c) 2018 Integrated Device Technology, Inc. 1 August 6, 2018 HS300x Datasheet Contents 1. Pin Assignments ...........................................................................................................................................................................................4 2. Pin Descriptions............................................................................................................................................................................................4 3. Absolute Maximum Ratings ..........................................................................................................................................................................5 4. Recommended Operating Conditions ..........................................................................................................................................................5 5. Humidity and Temperature Sensor Performance .........................................................................................................................................6 5.1 Humidity Sensor Specification .............................................................................................................................................................6 5.2 Temperature Sensor Specification ......................................................................................................................................................7 5.3 Humidity Sensor Accuracy Graphs ......................................................................................................................................................8 5.4 Temperature Sensor Accuracy Graphs ...............................................................................................................................................9 6. Sensor Interface .........................................................................................................................................................................................10 6.1 I2C Features and Timing ...................................................................................................................................................................10 6.2 Sensor Slave Address .......................................................................................................................................................................10 6.3 I2C Communication ...........................................................................................................................................................................11 6.4 Measurement Mode...........................................................................................................................................................................11 6.5 Measurement Requests (MR) ...........................................................................................................................................................11 6.6 Data Fetch (DF) .................................................................................................................................................................................12 6.7 Status Bits .........................................................................................................................................................................................12 7. Calculating Humidity and Temperature Output...........................................................................................................................................13 8. Application Circuit .......................................................................................................................................................................................13 9. Package Drawings and Land Pattern .........................................................................................................................................................14 10. Soldering Information .................................................................................................................................................................................14 11. Storage and Handling .................................................................................................................................................................................15 12. Quality and Reliability .................................................................................................................................................................................15 13. Ordering Information...................................................................................................................................................................................15 14. Revision History..........................................................................................................................................................................................16 List of Figures Figure 1. Pin Assignments for 3mm 2.41mm 6-LGA Package (Top View) .....................................................................................................4 Figure 2. HS3001 RH Accuracy Tolerance at 25C ...........................................................................................................................................8 Figure 3. HS3001 RH Accuracy over Temperature ............................................................................................................................................8 Figure 4. HS3002 RH Accuracy Tolerance at 25C ...........................................................................................................................................8 Figure 5. HS3002 RH Accuracy over Temperature ............................................................................................................................................8 Figure 6. HS3003 RH Accuracy Tolerance at 25C ...........................................................................................................................................8 Figure 7. HS3003 RH Accuracy over Temperature ............................................................................................................................................8 Figure 8. HS3004 RH Accuracy Tolerance at 25C ...........................................................................................................................................9 Figure 9. HS3004 RH Accuracy over Temperature ............................................................................................................................................9 Figure 10. HS3001/HS3002 Temperature Sensor Accuracy Tolerance ...............................................................................................................9 (c) 2018 Integrated Device Technology, Inc. 2 August 6, 2018 HS300x Datasheet Figure 11. HS3003 Temperature Sensor Accuracy Tolerance .............................................................................................................................9 Figure 12. HS3004 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. Recommended Soldering Profile .......................................................................................................................................................14 List of Tables Table 1. Pin Descriptions...................................................................................................................................................................................4 Table 2. Absolute Maximum Ratings .................................................................................................................................................................5 Table 3. Operating Conditions ...........................................................................................................................................................................5 Table 4. Humidity Sensor Specification, TA = +25C, VDD = 2.3V to 5.5V .........................................................................................................6 Table 5. Temperature Sensor Specification, TA = +25C, VDD = 2.3V to 5.5V ..................................................................................................7 Table 6. I2C Timing Parameters......................................................................................................................................................................10 Table 7. Status Bits .........................................................................................................................................................................................12 (c) 2018 Integrated Device Technology, Inc. 3 August 6, 2018 HS300x Datasheet 1. Pin Assignments Figure 1. Pin Assignments for 3mm VC SDA SCL 3 2 1 2.41mm 6-LGA Package (Top View) Pin 1 marker on bottom side 2. 4 5 6 VDD NC VSS Pin Descriptions Table 1. Pin Descriptions Pin Number Name Type Description 1 SCL In/out Serial clock 2 SDA In/out Serial data 3 VC Connect a 0.1F decoupling capacitor from VC to ground 4 VDD In Supply voltage 5 NC Do not connect 6 VSS In Ground [a] "NC" stands for not connected / no connection required / not bonded. (c) 2018 Integrated Device Technology, Inc. 4 August 6, 2018 HS300x Datasheet 3. 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 HS300x at absolute maximum ratings is not implied. Exposure to absolute maximum rating conditions might affect device reliability. Table 2. Absolute Maximum Ratings Symbol 4. Parameter Conditions Minimum Maximum Units Analog Supply Voltage -0.3 6.0 V Storage Temperature Range -55 150 C Recommended Operating Conditions Important note: The HS300x series sensors are optimized to perform best in the more common temperature and humidity ranges of 10C to 50C 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 sections 10 and 11. Table 3. Operating Conditions Parameter Condition Minimum Typical Maximum Units 2.3 3.3 5.5 V -40 to 85C 0.6 1 -40 to 125C 1 3 24.4 24.4 Operating Supply Voltage Sleep Current Average Current [a] Sleep Mode One RH + temperature measurement/second 14-bit resolution Wake-up Measurement Time Humidity or temperature including the digital compensation A A 0.10 14-bit resolution Operating Temperature Range 16.90 -40 ms 125 C [a] Typical and maximum average currents are given at 3.3V and 5.5V respectively. (c) 2018 Integrated Device Technology, Inc. 5 August 6, 2018 HS300x Datasheet 5. Humidity and Temperature Sensor Performance 5.1 Humidity Sensor Specification Table 4. Humidity Sensor Specification, TA = +25C, VDD = 2.3V to 5.5V Parameter Condition Minimum Range 0 HS3001 Accuracy [a] Resolution Typical 100 %RH 1.8 1.8 2.0 2.8 4.0 HS3004 3.8 5.0 14 bits 0.01 0.015 %RH 1.0 %RH 0.15 0.25 %RH 0.1 0.25 %RH/Yr 6.0 8.0 sec HS3002 HS3003 HS3001 HS3002 HS3003 HS3004 10% to 90%RH %RH 10% to 90%RH 20% to 80%RH Long-Term Stability Response Time Constant [b] (H) Units 1.5 Hysteresis Non-Linearity from Response Curve Maximum 20% to 80% RH Still Air 4.5 [a] Monotonic increases from 10 to 90%RH after sensor has been stabilized at 50%RH. [b] Initial value to 63% of total variation. (c) 2018 Integrated Device Technology, Inc. 6 August 6, 2018 HS300x Datasheet 5.2 Temperature Sensor Specification Table 5. Temperature Sensor Specification, TA = +25C, VDD = 2.3V to 5.5V Parameter Condition Minimum Range -40 HS3001 Accuracy HS3002 HS3003 HS3004 Resolution Typical -10C to 80C 0C to 70C 14 bits 0.01 Units 125 C 0.2 0.3 0.25 0.35 0.3 0.5 0.015 0.025 2.0 Response Time Constant [a] (T) Long-Term Stability Supply Voltage Dependency [b] Maximum C C Sec. 0.04 C/Yr VDD 2.8V 0.03 0.1 C/V 2.3V < VDD < 2.8V 1.25 2.25 C/V [a] Response time depends on system thermal mass and air flow. [b] Temperature accuracy can be optimized for specified supply voltages upon request. (c) 2018 Integrated Device Technology, Inc. 7 August 6, 2018 HS300x Datasheet 5.3 Humidity Sensor Accuracy Graphs The typical and maximum relative humidity sensor accuracy tolerances are shown in the following figures. Figure 2. HS3001 RH Accuracy Tolerance at 25C Figure 3. HS3001 RH Accuracy over Temperature MVH3001D - Typical RH Accuracy over Temperature 90 Rel. Humidity (%RH) 2.0 2.5 3.0 70 2.0 50 2.0 1.5 30 2.0 10 0 10 20 30 40 50 60 70 Temperature (C) Figure 4. HS3002 RH Accuracy Tolerance at 25C Figure 5. HS3002 RH Accuracy over Temperature MVH3002D - Typical RH Accuracy over Temperature 90 Rel. Humidity (%RH) 2.5 3.0 70 50 2.5 1.8 30 2.5 10 0 10 20 30 40 50 60 70 Temperature (C) Figure 6. HS3003 RH Accuracy Tolerance at 25C Figure 7. HS3003 RH Accuracy over Temperature MVH3003D - Typical RH Accuracy over Temperature 90 Rel. Humidity (%RH) 3.5 4.0 70 50 2.8 30 3.5 10 0 10 20 30 40 50 60 70 Temperature (C) (c) 2018 Integrated Device Technology, Inc. 8 August 6, 2018 HS300x Datasheet Figure 8. HS3004 RH Accuracy Tolerance at 25C Figure 9. HS3004 RH Accuracy over Temperature MVH3004D - Typical RH Accuracy over Temperature 90 Rel. Humidity (%RH) 4.5 70 50 3.8 30 4.5 10 0 10 20 30 40 50 60 70 Temperature (C) 5.4 Temperature Sensor Accuracy Graphs The typical and maximum temperature sensor accuracy tolerances are shown in the following figures. Figure 10. HS3001/HS3002 Temperature Sensor Accuracy Tolerance Figure 11. HS3003 Temperature Sensor Accuracy Tolerance Figure 12. HS3004 Temperature Sensor Accuracy Tolerance (c) 2018 Integrated Device Technology, Inc. 9 August 6, 2018 HS300x Datasheet 6. Sensor Interface The HS300x 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. 6.1 I2C Features and Timing The HS300x 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. Figure 13. Timing Diagram SDA tSUDAT tLOW tHDSTA tBUS SCL tHDSTA Table 6. tHDDAT tHIGH tSUSTA tSUSTO I2C Timing Parameters Parameter Symbol Minimum fSCL 20 START Condition Hold Time Relative to SCL Edge tHDSTA 0.1 s Minimum SCL Clock LOW Width[b] tLOW 0.6 s Minimum SCL Clock HIGH Width[b] tHIGH 0.6 s START Condition Setup Time Relative to SCL Edge tSUSTA 0.1 s Data Hold Time on SDA Relative to SCL Edge tHDDAT 0 Data Setup Time on SDA Relative to SCL Edge tSUDAT 0.1 s STOP Condition Setup Time on SCL tSUSTO 0.1 s tBUS 1 s SCL Clock Frequency[a] Bus Free Time Between STOP Condition and START Condition Typical Maximum Units 400 kHz 0.5 s [a] The minimum frequency of 20kHz applies to test only; no minimum under normal operations. [b] Combined LOW and HIGH widths must equal or exceed the minimum SCL period. 6.2 Sensor Slave Address The HS300x series default I2C address is 44HEX. The device will respond only to this 7-bit address. See section 6.3 for further information. (c) 2018 Integrated Device Technology, Inc. 10 August 6, 2018 HS300x Datasheet 6.3 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 Figure 14 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. Figure 14. START and STOP Condition Waveform START Condition STOP Condition SCL SCL START STOP SDA SDA After the START bit, the master device sends the 7-bit slave address (see section 6.2) to the HS300x, 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. 6.4 Measurement Mode The HS300x 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. 6.5 Measurement Requests (MR) The MR command is required to wake up the HS300x 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. Figure 15. Measurement Request S 1 0 0 0 1 0 0 W A S (0) Device Slave Address [6:0] S Start Condition S Stop Condition (c) 2018 Integrated Device Technology, Inc. Wait for Slave ACK A Acknowledge (ACK) 11 Slave Address Bit (MSB first) W Read/Write (Example: Write = 0) August 6, 2018 HS300x Datasheet 6.6 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 section 6.7); 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 HS300x as a slave sends an acknowledge (ACK) indicating success. The number of data bytes returned by the HS300x 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. Figure 16. Data Fetch S 1 0 0 0 1 0 0 R A 15 14 13 12 11 10 9 8 A 7 6 5 4 3 2 1 0 N S (1) Device Slave Address [6:0] Humidity Data [13:8] Wait for Slave ACK Humidity Data [7:0] Master ACK Master ACK Master NACK S 1 0 0 0 1 0 0 R 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 (1) Device Slave Address [6:0] S Start Condition S Stop Condition Slave Address Bit (MSB first) 6.7 Humidity Data [13:8] A Acknowledge (ACK) Humidity Data [7:0] N Not Acknowledge (NACK) 2 Command or Data Bit (Example: Bit 2) Temp. Data [15:8] Temp. Data [7:2] Mask [1:0] R Read/Write (Read = 1) Status Bit 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 7. Status Bits Status Bits Definition 00B 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. (c) 2018 Integrated Device Technology, Inc. 12 August 6, 2018 HS300x Datasheet 7. Calculating Humidity and Temperature Output The entire output of the HS300x is 4 bytes. The relative humidity (in percent) and the temperature (in degrees Celsius) are calculated with Equation 1 and Equation 2, respectively. Humidity [13 : 0] Humidity [%RH] 100 214 1 Equation 1 Temperature [15 : 2] Temperature [ o C] 165 40 214 1 Equation 2 8. Application Circuit Figure 17. HS300x Application Circuit (Top View) VDD RP RP 1 SCL VSS 6 2 SDA NC 5 3 VC VDD 4 0.1F 0.1F RP = Pull-up resistor (2.2k typical) (c) 2018 Integrated Device Technology, Inc. 13 August 6, 2018 HS300x Datasheet 9. Package Drawings and Land Pattern The package outline drawings are appended at the end of this document and are accessible from the link below. The package information is the most current data available. www.idt.com/document/psc/6-lga-package-outline-drawing-30-x-241-x-08-mm-body-10mm-pitch-lhg6d1 10. Soldering Information This section discusses soldering considerations for the HS300x. 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 17. 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 350C. 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 might be an initial offset, which will slowly disappear as the sensor is exposed to ambient conditions. (c) 2018 Integrated Device Technology, Inc. 14 August 6, 2018 HS300x Datasheet 11. Storage and Handling Recommendation: 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 50C 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 100C 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 30C for 12 to 14 hours. 12. Quality and Reliability The HS300x series is available as a qualified product for consumer and industrial market applications. All data specified parameters are guaranteed if not stated otherwise. 13. Ordering Information Orderable Part Number Description and Package Carrier Type Temperature HS3001 Digital Relative Humidity and Temperature Sensor. 1.5%RH (Typical), 3.0 x 2.41 x 0.8mm, 6-LGA (LHG6D1) Cut Tape -40C to +125C HS3002 Digital Relative Humidity and Temperature Sensor. 1.8%RH (Typical), 3.0 x 2.41 x 0.8mm, 6-LGA (LHG6D1) Cut Tape -40C to +125C HS3003 Digital Relative Humidity and Temperature Sensor. 2.8%RH (Typical), 3.0 x 2.41 x 0.8mm, 6-LGA (LHG6D1) Cut Tape -40C to +125C HS3004 Digital Relative Humidity and Temperature Sensor. 3.8%RH (Typical), 3.0 x 2.41 x 0.8mm, 6-LGA (LHG6D1) Cut Tape -40C to +125C (c) 2018 Integrated Device Technology, Inc. 15 August 6, 2018 HS300x Datasheet 14. Revision History Revision Date Description of Change August 6, 2018 Updated temperature sensor response time in Table 5. April 24, 2018 February 14, 2018 Changed operating voltage and added recommended operating conditions. November 8, 2017 Initial release. Clarified Figure 15 and Figure 16. Update for Equation 2. Edits for section 6.6. Template updates for section 9. Corporate Headquarters Sales Tech Support 6024 Silver Creek Valley Road San Jose, CA 95138 www.IDT.com 1-800-345-7015 or 408-284-8200 Fax: 408-284-2775 www.IDT.com/go/sales www.IDT.com/go/support DISCLAIMER Integrated Device Technology, Inc. (IDT) and its affiliated companies (herein referred to as "IDT") reserve the right to modify the products and/or specifications described herein at an y time, without notice, at IDT's sole discretion. Performance specifications and operating parameters of the described products are determined in an independent state and are not guaranteed to perform the same way when installed in customer products. The information contained herein is provided without representation or warranty of a ny kind, whether express or implied, including, but not limited to, the suitability of IDT's products for any particular purpose, an implied warranty of merchantability, or non -infringement of the intellectual property rights of others. This document is presented only as a guide and does not convey any license under intellectual property rights of IDT or any third parties. IDT's products are not intended for use in applications involving extreme environmental conditions or in life support systems or similar devices where the failure or malfunction of an IDT product can be reasonably expected to significantly affect the health or safety of users. Anyone using an IDT product in such a manner does so at their own risk, absent an express, written agreement by IDT. Integrated Device Technology, IDT and the IDT logo are trademarks or registered trademarks of IDT and its subsidiaries in the United States and other countries. Other trade marks used herein are the property of IDT or their respective third party owners. For datasheet type definitions and a glossary of common terms, visit www.idt.com/go/glossary. All contents of this document are copyright of Integrated Device Technology, Inc. All rights reserved. (c) 2018 Integrated Device Technology, Inc. 16 August 6, 2018 6-LGA Package Outline Drawing 3.0 x 2.41 x 0.8 mm Body, 1.0mm Pitch LHG6D1, PSC-4719-01, Rev 01, Page 1 2 1 6 3 5 (c) Integrated Device Technology, Inc. 4 6-LGA Package Outline Drawing 3.0 x 2.41 x 0.8 mm Body, 1.0mm Pitch LHG6D1, PSC-4719-01, Rev 01, Page 2 6 1 5 2 4 3 Package Revision History (c) Integrated Device Technology, Inc. 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