Product Overview
The TH02 is a digital relative humidity and temperature sensor IC designed for accurate and low-power measurements. It integrates temperature and humidity converter, signal processing, and calibration data on a single chip. The patented use of industry-standard, low-K polymeric dielectrics for sensing humidity enables excellent long-term stability with low drift and hysteresis. The TH02 is factory-calibrated and fully interchangeable, eliminating the need for recalibration or software changes. It features an I2C host interface and is available in a compact 4x4 mm QFN package, with an optional factory-installed protective cover for enhanced protection during assembly and throughout the product's life. This sensor is ideal for applications requiring precise measurement of temperature, humidity, and dew point, ranging from industrial HVAC/R and automotive climate control to consumer platforms and asset tracking.
Product Attributes
- Brand: HopeRF
- Interface: I2C
- Package: 4x4 mm QFN
- Calibration: Factory calibrated
- Features: Integrated on-chip heater, Optional factory-installed cover (hydrophobic/oleophobic)
Technical Specifications
| Parameter | Symbol | Test Condition | Min | Typ | Max | Unit |
|---|---|---|---|---|---|---|
| Electrical Specifications | ||||||
| Power Supply | VDD | 2.1 | 3.3 | 3.6 | V | |
| Operating Temperature (F grade) | TA | 0 to 70 C | 0 | 70 | C | |
| Operating Temperature (G grade) | TA | 40 to 85 C | 40 | 85 | C | |
| Input Voltage High | VIH | CS, SCL, SDA pins | 0.7xVDD | V | ||
| Input Voltage Low | VIL | CS, SCL, SDA pins | 0.3xVDD | V | ||
| Input Voltage Range | VIN | SCL, SDA pins with respect to GND | 0.0 | VDD | V | |
| Input Leakage | IIL | CS, CEXT pin with respect to GND | 1 | A | ||
| Output Voltage Low | VOL | SDA pin; IOL = 8.5 mA; VDD = 3.3 V | 0.6 | V | ||
| Output Voltage Low | VOL | SDA pin; IOL = 3.5 mA; VDD = 2.1 V | 0.4 | V | ||
| Power Consumption | ||||||
| Power Consumption (RH conversion) | IDD | RH conversion in progress | 240 | 560 | A | |
| Power Consumption (Temp conversion) | IDD | Temperature conversion in progress | 320 | 565 | A | |
| Power Consumption (Average) | IDD | Average for 1 temperature and 1 RH conversion / minute | A | |||
| Power Consumption (Low Power Mode) | IDD | CS < VIL; no conversion in progress; VDD = 3.3 V; SDA = SCL VIH | 150 | A | ||
| Power Consumption (Wake Up) | IDD | CS < VIL; no conversion in progress; VDD = 3.3 V; SDA = SCL VIH; HEAT = 1 | 24 | mA | ||
| Conversion Time (14-bit temp; 12-bit RH) | tCONV | (Fast = 0) | 35 | ms | ||
| Conversion Time (13-bit temp; 11-bit RH) | tCONV | (Fast = 1) | 18 | ms | ||
| Wake Up Time | tCS | From CS < VIL to ready for a temp/RH conversion | 10 | 21 | ms | |
| Power Up Time | tPU | From VDD 2.1V to ready for a temp/RH conversion | 10 | 15 | ms | |
| I2C Interface Specifications | ||||||
| SCLK Frequency | fSCL | 400 | kHz | |||
| SCL high time | tSKH | 0.6 | s | |||
| SCL low time | tSKL | 1.3 | s | |||
| Start hold time | tSTH | 0.6 | s | |||
| Start setup time | tSTS | 0.6 | s | |||
| Stop setup time | tSPS | Between Stop and Start | 0.6 | s | ||
| Bus free time | tBUF | 1.3 | s | |||
| SDA setup time | tDS | 100 | ns | |||
| SDA hold time | tDH | From SCL low to data valid | 100 | ns | ||
| SDA valid time | tVD;DAT | From SCL low to data valid | 0.9 | s | ||
| SDA acknowledge valid time | tVD;ACK | 0.9 | s | |||
| Humidity Sensor Accuracy | ||||||
| Relative Humidity Accuracy | 4.5 % RH (maximum @ 080% RH) | 4.5 | % RH | |||
| Temperature Sensor Accuracy | ||||||
| Temperature Accuracy | 0.5 C (typical) | 0.5 | C | |||
| Temperature Accuracy | 1 C (maximum @ 0 to 70 C) | 1 | C | |||
| Operating Range | ||||||
| Operating Humidity Range | 0 to 100% RH | 0 | 100 | % RH | ||
| Operating Temperature Range (GM) | 40 to +85 C | 40 | 85 | C | ||
| Operating Temperature Range (FM) | 0 to +70 C | 0 | 70 | C | ||
2411221127_HopeRF-Micro-electronics-TH02-SI7005_C155481.pdf
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