Product Overview
The Si7006 I2C Humidity and Temperature Sensor is a monolithic CMOS IC that integrates humidity and temperature sensor elements, an analog-to-digital converter, signal processing, calibration data, and an I2C Interface. It features precision sensing with low drift and hysteresis, excellent long-term stability, and is factory-calibrated for interchangeability. The sensor is available in a 3x3 mm DFN package and can be a drop-in upgrade for existing RH/temperature sensors. An optional factory-installed cover provides protection from liquids and particulates. The Si7006 is ideal for measuring humidity, dew-point, and temperature in applications such as HVAC/R, thermostats, respiratory therapy, white goods, indoor weather stations, micro-environments, automotive climate control, asset tracking, and mobile devices.
Product Attributes
- Brand: Silicon Laboratories
- Model: Si7006-A20
- Package: 3x3 mm DFN
- Material: Monolithic CMOS IC with low-K polymeric dielectrics
- Certifications: Patent Protected
Technical Specifications
| Parameter | Symbol | Test Condition | Min | Typ | Max | Unit |
| Power Supply | VDD | Recommended Operating Conditions | 1.9 | 3.6 | V | |
| VDD | I2C Interface Specifications | 1.9 | 3.6 | V | ||
| Operating Temperature | TA | Recommended Operating Conditions | 40 | +125 | C | |
| Input Voltage High | VIH | SCL, SDA pins | 0.7xVDD | V | ||
| Input Voltage Low | VIL | SCL, SDA pins | 0.3xVDD | V | ||
| Input Voltage Range | VIN | SCL, SDA pins with respect to GND | 0.0 | VDD | V | |
| Input Leakage | IIL | SCL, SDA pins | 1 | A | ||
| Output Voltage Low | VOL | SDA pin; IOL = 2.5 mA; VDD = 3.3 V | 0.6 | V | ||
| VOL | SDA pin; IOL = 1.2 mA; VDD = 1.9 V | 0.4 | V | |||
| Current Consumption | IDD | RH conversion in progress | 150 | 180 | A | |
| IDD | Temperature conversion in progress | 90 | 120 | A | ||
| IDD | Standby, 40 to +85 C | 0.06 | 0.62 | A | ||
| IDD | Standby, 40 to +125 C | 0.06 | 3.8 | A | ||
| Peak Current Consumption | IDD | during powerup | 3.5 | 4.0 | mA | |
| Peak Current Consumption | IDD | during I2C operations | 3.5 | 4.0 | mA | |
| Heater Current | IHEAT | HTRE bit enabled | 3.1 to 94.2 | mA | ||
| Conversion Time | tCONV | 12-bit RH | 10 | 12 | ms | |
| tCONV | 11-bit RH | 5.8 | 7 | ms | ||
| tCONV | 10-bit RH | 3.7 | 4.5 | ms | ||
| tCONV | 8-bit RH | 2.6 | 3.1 | ms | ||
| Conversion Time | tCONV | 14-bit temperature | 7 | 10.8 | ms | |
| tCONV | 13-bit temperature | 4 | 6.2 | ms | ||
| tCONV | 12-bit temperature | 2.4 | 3.8 | ms | ||
| Powerup Time | tPU | From VDD 1.9 V to ready for conversion, 25 C | 18 | 25 | ms | |
| tPU | From VDD 1.9 V to ready for conversion, full temperature range | 80 | ms | |||
| Powerup Time | tPU | After issuing a software reset command | 5 | 15 | ms | |
| Hysteresis | VHYS | High-to-low versus low-to- high transition | 0.05 x VDD | V | ||
| SCLK Frequency | fSCL | I2C Interface | 400 | kHz | ||
| SCL High Time | tSKH | I2C Interface | 0.6 | s | ||
| SCL Low Time | tSKL | I2C Interface | 1.3 | s | ||
| Start Hold Time | tSTH | I2C Interface | 0.6 | s | ||
| Start Setup Time | tSTS | I2C Interface | 0.6 | s |
2411111158_SILICON-LABS-SI7006-A20-IM1R_C3664441.pdf
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