SI7020-A10-YM0 datasheet, PDF - EEWORLD Datasheet

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SI7020-A10-YM0: DescriptionSerial Switch/Digital Sensor, 14 Bit(s), 0.40Cel, CMOS, Square, 6 Pin, Surface Mount, 3 X 3 MM, DFN-6; CategoryThe sensor; File Size509KB，34 Pages; ManufacturerSilicon Laboratories Inc; Environmental Compliance

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SI7020-A10-YM0 Overview

Serial Switch/Digital Sensor, 14 Bit(s), 0.40Cel, CMOS, Square, 6 Pin, Surface Mount, 3 X 3 MM, DFN-6

SI7020-A10-YM0 Parametric

Parameter Name	Attribute value
Is it Rohs certified?	conform to
Maker	Silicon Laboratories Inc
package instruction	SOLCC6,.12,40
Reach Compliance Code	unknow
Maximum accuracy (Celsius)	0.4 Cel
body width	3 mm
body height	0.75 mm
Body length or diameter	3 mm
Installation features	SURFACE MOUNT
Number of digits	14
Number of terminals	6
Maximum working current	4 mA
Maximum operating temperature	125 °C
Minimum operating temperature	-40 °C
Output interface type	I2C INTERFACE
Package body material	PLASTIC/EPOXY
Encapsulate equivalent code	SOLCC6,.12,40
Package Shape/Form	SQUARE
power supply	2/3.3 V
Sensor/temperature sensor type	TEMPERATURE SENSOR,SWITCH/DIGITAL OUTPUT,SERIAL
Maximum supply voltage	3.6 V
Minimum supply voltage	1.9 V
surface mount	YES
technology	CMOS
Termination type	SOLDER

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Si 7 0 2 0 - A1 0

C H

UMIDITY

Features



AND

EMPERATURE

ENSOR

Precision Relative Humidity Sensor



± 4% RH (max), 0–80% RH

High Accuracy Temperature Sensor



±0.4 °C (max), –10 to 85 °C

0 to 100% RH operating range

Up to –40 to +125 °C operating

range

Wide operating voltage

(1.9 to 3.6 V)

Low Power Consumption



150 µA active current



60 nA standby current



Factory-calibrated

C Interface

Integrated on-chip heater

3x3 mm DFN Package

Excellent long term stability

Optional factory-installed cover



Low-profile



Protection during reflow



Excludes liquids and particulates

Si7020

Ordering Information:

See page 28.

Micro-environments/data centers



Automotive climate control and

defogging



Asset and goods tracking



Mobile phones and tablets



Applications



HVAC/R

Thermostats/humidistats

Respiratory therapy

White goods

Indoor weather stations

Pin Assignments

Top View

Description

The Si7020 I

C Humidity and Temperature Sensor is a monolithic CMOS IC

integrating humidity and temperature sensor elements, an analog-to-digital

converter, signal processing, calibration data, and an I

C Interface. The patented

use of industry-standard, low-K polymeric dielectrics for sensing humidity enables

the construction of low-power, monolithic CMOS Sensor ICs with low drift and

hysteresis, and excellent long term stability.

The humidity and temperature sensors are factory-calibrated and the calibration

data is stored in the on-chip non-volatile memory. This ensures that the sensors

are fully interchangeable, with no recalibration or software changes required.

The Si7020 is available in a 3x3 mm DFN package and is reflow solderable. It can

be used as a hardware- and software-compatible drop-in upgrade for existing RH/

temperature sensors in 3x3 mm DFN-6 packages, featuring precision sensing

over a wider range and lower power consumption. The optional factory-installed

cover offers a low profile, convenient means of protecting the sensor during

assembly (e.g., reflow soldering) and throughout the life of the product, excluding

liquids (hydrophobic/oleophobic) and particulates.

The Si7020 offers an accurate, low-power, factory-calibrated digital solution ideal

for measuring humidity, dew-point, and temperature, in applications ranging from

HVAC/R and asset tracking to industrial and consumer platforms.

SDA

GND

DNC

SCL

VDD

DNC

Patent Protected. Patents pending

Rev. 1.0 3/14

Si7020-A10

Si7020-A10

ABLE

Section

ONTENTS

Page

1. Electrical Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4

2. Typical Application Circuits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

3. Bill of Materials . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

4. Functional Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

4.1. Relative Humidity Sensor Accuracy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

4.2. Hysteresis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

4.3. Prolonged Exposure to High Humidity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16

4.4. PCB Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

4.5. Protecting the Sensor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

4.6. Bake/Hydrate Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

4.7. Long Term Drift/Aging . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

5. I2C Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

5.1. Issuing a Measurement Command . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

5.2. Reading and Writing User Registers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

5.3. Electronic Serial Number . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24

5.4. Firmware Revision . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

5.5. Heater . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

6. Control Register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

6.1. Register Descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

7. Pin Descriptions: Si7020 (Top View) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

8. Ordering Guide . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

9. Package Outline . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

9.1. Package Outline: 3x3 6-pin DFN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

9.2. Package Outline: 3x3 6-pin DFN with Protective Cover . . . . . . . . . . . . . . . . . . . . . . 30

10. PCB Land Pattern and Solder Mask Design . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

11. Top Marking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .32

11.1. Si7020 Top Marking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

11.2. Top Marking Explanation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

12. Additional Reference Resources . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

Document Change List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .33

Contact Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .34

Rev. 1.0

SI7020-A10-YM0 Related Products

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Description	Serial Switch/Digital Sensor, 14 Bit(s), 0.40Cel, CMOS, Square, 6 Pin, Surface Mount, 3 X 3 MM, DFN-6	IC temp sensor RH 3% dfn	IC temp sensor RH 3% 6dfn	IC temp sensor RH 3% 6dfn	IC temp sensor RH 3% 6dfn	IC temp sensor RH 3% 6dfn	IC temp sensor RH 3% dfn	Serial Switch/Digital Sensor, 14 Bit(s), 0.40Cel, CMOS, Square, 6 Pin, Surface Mount, 3 X 3 MM, DFN-6	Serial Switch/Digital Sensor, 14 Bit(s), 0.40Cel, CMOS, Square, 6 Pin, Surface Mount, 3 X 3 MM, DFN-6	Serial Switch/Digital Sensor, 14 Bit(s), 0.40Cel, CMOS, Square, 6 Pin, Surface Mount, 3 X 3 MM, DFN-6
Is it Rohs certified?	conform to	conform to	conform to	conform to	conform to	conform to	conform to	conform to	conform to	conform to
Maker	Silicon Laboratories Inc	Silicon Laboratories Inc	Silicon Laboratories Inc	Silicon Laboratories Inc	Silicon Laboratories Inc	Silicon Laboratories Inc	Silicon Laboratories Inc	Silicon Laboratories Inc	Silicon Laboratories Inc	Silicon Laboratories Inc
package instruction	SOLCC6,.12,40	SOLCC6,.12,40	SOLCC6,.12,40	SOLCC6,.12,40	SOLCC6,.12,40	SOLCC6,.12,40	3 X 3 MM, DFN-6	SOLCC6,.12,40	SOLCC6,.12,40	SOLCC6,.12,40
Reach Compliance Code	unknow	unknow	unknow	unknow	unknow	unknow	unknow	unknow	unknow	unknow
Maximum accuracy (Celsius)	0.4 Cel	0.4 Cel	0.4 Cel	0.4 Cel	0.4 Cel	0.4 Cel	0.4 Cel	0.4 Cel	0.4 Cel	0.4 Cel
body width	3 mm	3 mm	3 mm	3 mm	3 mm	3 mm	3 mm	3 mm	3 mm	3 mm
body height	0.75 mm	0.75 mm	0.75 mm	0.75 mm	1.21 mm	1.21 mm	1.21 mm	0.75 mm	1.21 mm	1.21 mm
Body length or diameter	3 mm	3 mm	3 mm	3 mm	3 mm	3 mm	3 mm	3 mm	3 mm	3 mm
Installation features	SURFACE MOUNT	SURFACE MOUNT	SURFACE MOUNT	SURFACE MOUNT	SURFACE MOUNT	SURFACE MOUNT	SURFACE MOUNT	SURFACE MOUNT	SURFACE MOUNT	SURFACE MOUNT
Number of digits	14	14	14	14	14	14	14	14	14	14
Number of terminals	6	6	6	6	6	6	6	6	6	6
Maximum working current	4 mA	4 mA	4 mA	4 mA	4 mA	4 mA	4 mA	4 mA	4 mA	4 mA
Maximum operating temperature	125 °C	85 °C	125 °C	125 °C	125 °C	125 °C	85 °C	125 °C	125 °C	125 °C
Minimum operating temperature	-40 °C	-40 °C	-40 °C	-40 °C	-40 °C	-40 °C	-40 °C	-40 °C	-40 °C	-40 °C
Output interface type	I2C INTERFACE	I2C INTERFACE	I2C INTERFACE	I2C INTERFACE	I2C INTERFACE	I2C INTERFACE	I2C INTERFACE	I2C INTERFACE	I2C INTERFACE	I2C INTERFACE
Package body material	PLASTIC/EPOXY	PLASTIC/EPOXY	PLASTIC/EPOXY	PLASTIC/EPOXY	PLASTIC/EPOXY	PLASTIC/EPOXY	PLASTIC/EPOXY	PLASTIC/EPOXY	PLASTIC/EPOXY	PLASTIC/EPOXY
Encapsulate equivalent code	SOLCC6,.12,40	SOLCC6,.12,40	SOLCC6,.12,40	SOLCC6,.12,40	SOLCC6,.12,40	SOLCC6,.12,40	SOLCC6,.12,40	SOLCC6,.12,40	SOLCC6,.12,40	SOLCC6,.12,40
Package Shape/Form	SQUARE	SQUARE	SQUARE	SQUARE	SQUARE	SQUARE	SQUARE	SQUARE	SQUARE	SQUARE
power supply	2/3.3 V	2/3.3 V	2/3.3 V	2/3.3 V	2/3.3 V	2/3.3 V	2/3.3 V	2/3.3 V	2/3.3 V	2/3.3 V
Sensor/temperature sensor type	TEMPERATURE SENSOR,SWITCH/DIGITAL OUTPUT,SERIAL	TEMPERATURE SENSOR,SWITCH/DIGITAL OUTPUT,SERIAL	TEMPERATURE SENSOR,SWITCH/DIGITAL OUTPUT,SERIAL	TEMPERATURE SENSOR,SWITCH/DIGITAL OUTPUT,SERIAL	TEMPERATURE SENSOR,SWITCH/DIGITAL OUTPUT,SERIAL	TEMPERATURE SENSOR,SWITCH/DIGITAL OUTPUT,SERIAL	TEMPERATURE SENSOR,SWITCH/DIGITAL OUTPUT,SERIAL	TEMPERATURE SENSOR,SWITCH/DIGITAL OUTPUT,SERIAL	TEMPERATURE SENSOR,SWITCH/DIGITAL OUTPUT,SERIAL	TEMPERATURE SENSOR,SWITCH/DIGITAL OUTPUT,SERIAL
Maximum supply voltage	3.6 V	3.6 V	3.6 V	3.6 V	3.6 V	3.6 V	3.6 V	3.6 V	3.6 V	3.6 V
Minimum supply voltage	1.9 V	1.9 V	1.9 V	1.9 V	1.9 V	1.9 V	1.9 V	1.9 V	1.9 V	1.9 V
surface mount	YES	YES	YES	YES	YES	YES	YES	YES	YES	YES
technology	CMOS	CMOS	CMOS	CMOS	CMOS	CMOS	CMOS	CMOS	CMOS	CMOS
Termination type	SOLDER	SOLDER	SOLDER	SOLDER	SOLDER	SOLDER	SOLDER	SOLDER	SOLDER	SOLDER

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