HTU21S Ver la hoja de datos (PDF) - Unspecified
Número de pieza
componentes Descripción
Fabricante
HTU21S Datasheet PDF : 21 Pages
| |||
HTU21D(F) Sensor
Digital Relative Humidity sensor with Temperature output
ELECTRICAL AND GENERAL ITEMS
(@T = 25°C, @Vdd = 3V)
Characteristics
Symbol
Min
Typ
Max
Unit
Voltage Supply
VDD
1.5
3.0
3.6
V
Current
Sleep mode
consumption (1)
Measuring
idd
0.02
0.14
µA
300
450
500
µA
Sleep mode
Power Dissipation Average 8bit (2)
0.06
0.5
µW
2.7
µW
Communication
digital 2-wire interface, I²C protocol
Heater
VDD=3V
5.5mW/ΔT=+0.5-1.5°C
Storage
(1) Conditions: Vdd = 3V, SCK= 400kHz at 25°C
(2) Conditions: Vdd = 3V, SCK= 400kHz, Temp<60°C, duty cycle <10%
-40°C/125°C
SENSOR PERFORMANCE
RELATIVE HUMIDITY
(@T = 25°C, @Vdd = 3V)
Characteristics
Symbol
Min
Typ
Max
Unit
Resolution
12 bits
8 bits
0.04
%RH
0.7
%RH
Humidity Operating Range
Relative Humidity Accuracy
typ
@25°C (20%RH to 80%RH)
max
RH
0
100
%RH
±2
%RH
See graph 1
%RH
Replacement
Temperature coefficient (from 0°C to 80°C)
Humidity Hysteresis
12 bits
fully interchangeable
Tcc
-0.15 %RH/°C
±1
%RH
14
16
ms
Measuring Time (1)
11 bits
10 bits
7
8
ms
4
5
ms
8 bits
2
3
ms
PSRR
±10
LSB
Recovery time after 150 hours of condensation
t
10
s
Long term drift
0.5
%RH/yr
Response Time (at 63% of signal) from 33 to 75%RH (2)
τRH
5
10
s
(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
HPC199_3 HTU21D(F) Sensor Datasheet
www.meas-spec.com
3/21
October 2013
Share Link: 