​Si7006/13/20/21/34 I2C Relative Humidity and Temperature Sensors

The Si7006/13/20/21/34 devices are Silicon Labs’ latest generation I2C relative humidity and temperature sensors. All members of this device family combine fully factory-calibrated humidity and temperature sensor elements with an analog to digital converter, signal processing and an I2C host interface. Patented use of industry-standard low-K polymer dielectrics provides excellent accuracy and long term stability, along with low drift and low hysteresis. The innovative CMOS design also offers the lowest power consumption in the industry for a relative humidity and temperature sensor. The Si7013/20/21/34 devices are designed for high-accuracy applications, while the Si7006 is targeted toward lower-accuracy applications that traditionally have used discrete RH/T sensors.
With full factory calibration, all Si70xx devices require no addition RH/temperature calibration during PCB assembly. The 2nd generation Si7006/13/20/21 devices feature a 3 mm x 3 mm package and wide 1.9 to 3.6 V power supply voltage, while the 3rd generation Si7034 device features a smaller 2 mm x 2 mm package and a low 1.67 V to 1.98 V power supply voltage popular in wearable and consumer devices. For protection against dust, dirt and chemical contaminants the Si7006/13/20/21 devices can be fitted with an optional factory-installed cover. In addition, designs that require 2-zone temperature sensing will benefit from the Si7013’s auxiliary sensor input with programmable linearization.
 
 

Features

  • Precision Relative Humidity Sensor:
    • Si7013/21: ± 3% RH (maximum) @ 0–80% RH
    • Si7020/34: ± 4% RH (maximum) @ 0–80% RH
    • Si7006: ± 5% RH (maximum) @ 0–80% RH
  • Temperature Sensor:
    • Si7013/20/21/34: ±0.4 °C accuracy (maximum) @ -10 to +85 °C
    • Si7006: ±1.0 °C accuracy (maximum) @ -10 to +85 °C
  • 0 to 100% RH operating range
  • Up to -40 to +125 °C operating range
  • Wide operating voltage range
    • Si7006/13/20/21: 1.9 to 3.6 V
    • Si7034: 1.67 V to 1.98 V
  • Low Power Consumption:
    • 2.2 µW at 3.3 V, 1 Hz (Si7006/13/20/21)
    • 0.9 µW at 1.8 V, 1 Hz (Si7034)
  • I2C host interface
  • Integrated on-chip heater
  • Tiny DFN package
    • Si7006/13/20/21: 3 mm x 3 mm
    • Si7034: 2 mm x 2 mm
  • Excellent long term stability
  • Factory calibrated
  • Optional factory-installed filter/cover
    • Lifetime protection during reflow and in operation
    • Protects against contamination from dust, dirt, household chemicals and other liquids
  • AEC-Q100 automotive qualified (Si7013/20/21/34)
 
 

Applications

Documentation

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Data Sheet (5)

User Guides (7)

Application Notes (2)

DescriptionVersionUpdatedSize
AN607: Si70xx Humidity and Temperature Sensor Designer’s Guide
1.95/12/2016741 kB
Low-Cost I2C Level Translator
0.14/6/2015191 kB

White Papers (4)

Miscellaneous (1)

DescriptionVersionUpdatedSize
Si7013 Thermistor Correction Calculator Table
0.25/9/201436 kB

PCN (8)

Design Tools

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Software (13)

DescriptionVersionUpdatedSize
Biometric-EXP-EVB Demo
1.09/3/20148817 kB
Manual Install of Sensor Puck Android App
3/30/201524586 kB
Manual install of Sensor Puck Android App
1.14/6/201525545 kB
Sensor Puck
1.03/29/201660 kB
Si7006-07-EVB Doc Kit
1.010/27/2014163163 kB
Si7006-07-EVB Schematics and Layout
1.09/5/20142455 kB
Si7013 USB-Dongle GUI Software Installer
4.0.012/8/2014182528 kB
Si7013EVB-UDP Doc Kit
1.012/3/201312076 kB
Si7013EVB-UDP-F960 Doc Kit
1.012/3/201311109 kB
Si7013EVB-UDP-M3L1 Doc Kit
1.012/3/201311142 kB
Si7013EVB-USB-DONGLE Doc Kit
2.05/9/2014169275 kB
Si7013USB-DONGLE Schematics and Layout
1.012/2/20134357 kB
Si7034-EVB Schematics and Layout
1.02068 kB

Drivers (1)

DescriptionVersionUpdatedSize
Si70xx Humidity and Temperature Sensor Driver Code
3.010/29/201413 kB
Product Matrix
Zoom
Part NumberDescriptionDatasheetTemp. Accuracy (max)RH Accuracy (max)Temperature RangeFilter CoverPackage FormatPackage Type
Si7006-A20-IM
Buy
Sample
Dig I2C 4% RH + Temp Sensor
±1 °C±5%-40 to 125 °CNoTubeDFN6
Si7006-A20-IM1
Buy
Sample
Dig I2C 4% RH + Temp Sensor + Cover
±1 °C±5%-40 to 125 °CYesCut TapeDFN6
Si7013-A20-GM
Buy
Sample
Dig I2C 2% RH + 2-Zone Temp Sensor
±0.4 °C±3%-40 to 85 °CNoTubeDFN10
Si7013-A20-GM1
Buy
Sample
Dig I2C 2% RH + 2-Zone Temp Sensor + Cover
±0.4 °C±3%-40 to 85 °CYesCut TapeDFN10
Si7013-A20-IMDig I2C 2% RH + 2-Zone Temp Sensor
±0.4 °C±3%-40 to 125 °CNoTubeDFN10
Si7013-A20-IM1Dig I2C 2% RH + 2-Zone Temp Sensor + Cover
±0.4 °C±3%-40 to 125 °CYesCut TapeDFN10
Si7020-A20-GM
Buy
Sample
Dig I2C 3% RH + Temp Sensor
±0.4 °C±4%-40 to 85 °CNoTubeDFN6
Si7020-A20-GM1
Buy
Sample
Dig I2C 3% RH + Temp Sensor + Cover
±0.4 °C±4%-40 to 85 °CYesCut TapeDFN6
Si7020-A20-IMDig I2C 3% RH + Temp Sensor
±0.4 °C±4%-40 to 125 °CNoTubeDFN6
Si7020-A20-IM1Dig I2C 3% RH + Temp Sensor + Cover
±0.4 °C±4%-40 to 125 °CYesCut TapeDFN6
Si7021-A20-GM
Buy
Sample
Dig I2C 2%RH + Temp Sensor
±0.4 °C±3%-40 to 85 °CNoTubeDFN6
Si7021-A20-GM1
Buy
Sample
Dig I2C 2% RH + Temp Sensor + Cover
±0.4 °C±3%-40 to 85 °CYesCut TapeDFN6
Si7021-A20-IMDig I2C 2% RH + Temp Sensor
±0.4 °C±3%-40 to 125 °CNoTubeDFN6
Si7021-A20-IM1Dig I2C 2% RH + Temp Sensor + Cover
±0.4 °C±3%-40 to 125 °CYesCut TapeDFN6
Si7034-A10-IM
Buy
Sample
Dig I2C 3% RH + Temp Sensor
±0.4 °C±4%-40 to 125 °CNoCut TapeQFN6

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