HTU20D datasheet(4/23 Pages) TEC

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HTU20D(F) RH/T SENSOR IC

Digital Relative Humidity sensor with Temperature output

SENSOR SOLUTIONS /// HPC202_5 HTU20D(F) Sensor Datasheet

9/2015

Page 4

ELECTRICAL AND GENERAL ITEMS

(@T = 25°C, @Vdd = 3V)

Characteristics

Symbol

Min

Typ

Max

Unit

Voltage Supply

VDD

1.5

3.0

3.6

Current

consumption (1)

Sleep mode

idd

0.02

0.14

µA

Measuring

300

450

500

µA

Power Dissipation

Sleep mode

0.06

0.5

µW

Average 8bit (2)

2.7

µW

Communication

digital 2-wire interface, I²C protocol

Heater

VDD=3V

5.5mW/ΔT=+0.5-1.5°C

Storage

-40°C/125°C

(1) Conditions: Vdd = 3V, SCK= 400kHz at 25°C

(2) Conditions: Vdd = 3V, SCK= 400kHz, Temp<60°C, duty cycle <10%

SENSOR PERFORMANCE

RELATIVE HUMIDITY

(@T = 25°C, @Vdd = 3V)

Characteristics

Symbol

Min

Typ

Max

Unit

Resolution

12 bits

0.04

%RH

8 bits

0.7

%RH

Humidity Operating Range

100

%RH

Relative Humidity Accuracy

@25°C (20%RH to 80%RH)

typ

±3

%RH

max

See graph 1

%RH

Replacement

fully interchangeable

Temperature coefficient (from 0°C to 80°C)

Tcc

-0.15

%RH/°C

Humidity Hysteresis

±1

%RH

Measuring Time (1)

12 bits

11 bits

10 bits

8 bits

PSRR

±10

LSB

Recovery time after 150 hours of condensation

Long term drift

0.5

%RH/yr

Response Time (at 63% of signal) from 33 to 75%RH (2)

τRH

(1) Typical values are recommended for calculating energy consumption while maximum values shall be applied for calculating

waiting times in communication.

(2) At 1m/s air flow

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