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calibrated silicon labs si7020-a20-gm1r sensor for humidity and temperature sensing in white goods

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calibrated silicon labs si7020-a20-gm1r sensor for humidity and temperature sensing in white goods

Humidity Tolerance : ±4%RH

Temperature Range : -40℃~+125℃

Humidity : 0%RH~100%RH

Temperature Tolerance : ±0.4℃

Description : ±4%RH -40℃~+125℃ 0%RH~100%RH DFN-6(3x3) Humidity, Moisture Sensors RoHS

Mfr. Part # : SI7020-A20-GM1R

Model Number : SI7020-A20-GM1R

Package : DFN-6(3x3)

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Product Overview

The Si7020-A20 is an I2C Humidity and Temperature Sensor from Silicon Laboratories. This monolithic CMOS IC integrates humidity and temperature sensor elements, an analog-to-digital converter, signal processing, and calibration data. It offers precision sensing with low drift, hysteresis, and excellent long-term stability, thanks to its patented use of low-K polymeric dielectrics. The sensor is factory-calibrated and fully interchangeable. Available in a 3x3 mm DFN package, it serves as a drop-in upgrade for existing sensors, providing higher precision and lower power consumption. An optional factory-installed cover protects the sensor from liquids and particulates. It is ideal for applications requiring accurate humidity, dew-point, and temperature measurements, including HVAC/R, thermostats, respiratory therapy, white goods, and asset tracking.

Product Attributes

Brand: Silicon Laboratories
Model: Si7020-A20
Package: 3x3 mm DFN
Optional Feature: Factory-installed cover
Certifications: Not specified
Material: Not specified
Color: Not specified
Origin: Not specified

Technical Specifications

Parameter	Symbol	Min	Typ	Max	Unit	Notes
Recommended Operating Conditions
Power Supply	VDD	1.9		3.6	V
Operating Temperature (I and Y grade)	TA	40		+125	C
Operating Temperature (G grade)	TA	40		+85	C
General Specifications
Input Voltage High	VIH	0.7xVDD			V	SCL, SDA pins
Input Voltage Low	VIL			0.3xVDD	V	SCL, SDA pins
Input Voltage Range	VIN	0.0		VDD	V	SCL, SDA pins with respect to GND
Input Leakage	IIL			1	A	SCL, SDA pins
Output Voltage Low	VOL			0.6	V	SDA pin; IOL = 2.5 mA; VDD = 3.3 V
Output Voltage Low	VOL			0.4	V	SDA pin; IOL = 1.2 mA; VDD = 1.9 V
Current Consumption (RH conversion)	IDD		150	180	A
Current Consumption (Temp conversion)	IDD		90	120	A
Standby Current (40 to +85 C)	IDD		0.06	0.62	A	No conversion or I2C transaction in progress. Typical values measured at 25 C.
Standby Current (40 to +125 C)	IDD		0.06	3.8	A	No conversion or I2C transaction in progress. Typical values measured at 25 C.
Peak IDD during powerup	IDD		3.5	4.0	mA	Occurs once during powerup. Duration is <5 msec.
Peak IDD during I2C operations	IDD		3.5	4.0	mA	Occurs during I2C commands for Reset, Read/Write User Registers, Read EID, and Read Firmware Version. Duration is <100 s when I2C clock speed is >100 kHz.
Heater Current	IHEAT		3.1	94.2	mA	Additional current consumption when HTRE bit enabled.
Conversion Time (12-bit RH)	tCONV		10	12	ms	Initiating a RH measurement will also automatically initiate a temperature measurement.
Conversion Time (14-bit temperature)	tCONV		7	10.8	ms	Initiating a RH measurement will also automatically initiate a temperature measurement.
Powerup Time (VDD 1.9 V to ready, 25 C)	tPU		18	25	ms
Powerup Time (VDD 1.9 V to ready, full temp range)	tPU			80	ms
Powerup Time (after software reset)	tPU		5	15	ms
I2C Interface Specifications
Hysteresis	VHYS	0.05 x VDD			V	High-to-low versus low-to- high transition
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	0.6			s

2411261521_SILICON-LABS-SI7020-A20-GM1R_C3664346.pdf

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