Texas Instruments HDC3020-Q1 Bedienungsanleitung

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HDC302x-Q1 Automotive 0.5%RH Digital Relative Humidity Sensor, 0.19%RH/yr LTD,

4s Response, Offset Error Correction, 0.1°C Temperature Sensor

1 Features

•AEC-Q100 qualified for automotive applications

–Temperature Grade 1: –40°C to 125°C

–Device HBM ESD Classification Level 2

–Device CDM ESD Classification Level C4

•Functional Safety-Capable

–Documentation to aid functional safety system

design

•Relative humidity (RH) sensor:

–Operating range: 0% to 100%

–Accuracy: ±0.5% typical

–Offset Error Correction: reduces offset to return

device to within accuracy specification

–Long-term drift: 0.19%RH/yr

–Condensation protection with integrated heater

•Temperature sensor:

–Operating range: –40°C to 125°C

–Accuracy: ±0.1°C typical

•NIST traceability: relative humidity & temperature

•Output Short Circuit Protection

•Low power: average current 0.4µA

•I

2

C interface compatibility up to 1MHz speeds

–Four selectable I

2

C addresses

–Data protection through CRC checksum

•Supply voltage: 1.62V to 5.50V

•Available auto measurement mode

•Programmable interrupts

•Programmable RH and Temp measurement offset

•Factory-installed polyimide tape assembly cover

•Factory-installed IP67 rated environmental cover

•WSON package with wettable flanks options

2 Applications

•Automotive HVAC control module

•Automotive HVAC sensor - air quality

•Automotive Particulate Matter PM2.5

•Battery Management Systems

•On Board Charging

•Automotive Camera

RH Sensor

T Sensor

ADC

EEPROM

Linearization

I

2

C

SCL

SDA

ALERT

ADDR

ADDR1

RESET

GND

HDC30x

µC

GND

I

2

C

Controller

VDD

VDD

+V

supply

GPIO

Heater

Typical Application

3 Description

The HDC302x-Q1 is an integrated, capacitive based

relative humidity (RH) and temperature sensor . The

device provides high accuracy measurements over

a wide supply range (1.62V – 5.5V) and low power

consumption in a compact 2.5mm × 2.5mm × 0.8mm

WSON 8-pin package. Both the temperature and

humidity sensors are 100% tested and trimmed on a

production setup that is NIST traceable and verified

with equipment that is calibrated to ISO/IEC 17025

standards.

Offset Error Correction reduces RH sensor offset due

to aging, exposure to extreme operating conditions,

and contaminants to return device to within accuracy

specifications. For battery IoT applications, auto

measurement mode and ALERT feature enable low

system power by maximizing MCU sleep time. There

are four different I

2

C addresses that support speeds

up to 1MHz. A heater is available to dissipate

condensation and moisture.

The HDC3020-Q1 is an open cavity package without

protective cover. Two device variants have a cover

option to protect the open cavity RH sensor:

HDC3021-Q1 and HDC3022-Q1. HDC3021-Q1 has

removable protective tape to allow conformal coatings

and PCB wash. HDC3022-Q1 has a permanent

IP67 filter membrane to protect against dust and

water condensation. All three package variants have

wettable flanks option.

Package Information

PART NUMBERPACKAGE

(1)

PACKAGE SIZE

(2)

HDC3020-Q1

HDC3021-Q1

HDC3022-Q1

WSON (8)

2.50mm × 2.50mm

× 0.75mm

(1)For more information, see Section 11.

(2)The package size (length × width) is a nominal value and

includes pins, where applicable.

RH(%RH)

RHAccuracy(%RH)

0102030405060708090100

-4

-3.5

-3

-2.5

-2

-1.5

-1

-0.5

0

0.5

1

1.5

2

2.5

3

3.5

4

0102030405060708090100

-4

-3.5

-3

-2.5

-2

-1.5

-1

-0.5

0

0.5

1

1.5

2

2.5

3

3.5

4

Typical

MIN/MAX

Relative Humidity (%RH) Accuracy

HDC3020-Q1, HDC3021-Q1, HDC3022-Q1

SNAS817E – JUNE 2021 – REVISED JANUARY 2026

An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,

intellectual property matters and other important disclaimers. PRODUCTION DATA.

Produktspezifikationen