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PDF HTS221 Data sheet ( Hoja de datos )
| Número de pieza | HTS221 | |
| Descripción | Capacitive digital sensor | |
| Fabricantes | STMicroelectronics | |
| Logotipo |  |
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HTS221
Capacitive digital sensor for relative humidity and temperature
HLGA-6L
(2 x 2 x 0.9 mm)
Features
0 to 100% relative humidity range
Supply voltage: 1.7 to 3.6 V
Low power consumption: 2 μA @ 1 Hz ODR
Selectable ODR from 1 Hz to 12.5 Hz
High rH sensitivity: 0.004% rH/LSB
Humidity accuracy: ± 3.5% rH, 20 to +80% rH
Temperature accuracy: ± 0.5 °C,15 to +40 °C
Embedded 16-bit ADC
16-bit humidity and temperature output data
SPI and I²C interfaces
Factory calibrated
Tiny 2 x 2 x 0.9 mm package
ECOPACK® compliant
Datasheet - production data
Applications
Air conditioning, heating and ventilation
Air humidifiers
Refrigerators
Wearable devices
Smart home automation
Industrial automation
Respiratory equipment
Asset and goods tracking
Description
The HTS221 is an ultra-compact sensor for
relative humidity and temperature. It includes a
sensing element and a mixed signal ASIC to
provide the measurement information through
digital serial interfaces.
The sensing element consists of a polymer
dielectric planar capacitor structure capable of
detecting relative humidity variations and is
manufactured using a dedicated ST process.
The HTS221 is available in a small top-holed cap
land grid array (HLGA) package guaranteed to
operate over a temperature range from -40 °C to
+120 °C.
Order code
HTS221TR
Table 1. Device summary
Temperature range [°C]
Package
-40 to +120
HLGA-6L
August 2016
This is information on a product in full production.
DocID026333 Rev 4
Packing
Tape and reel
1/33
www.st.com
1 page  
HTS221
List of figures
List of figures
Figure 1.
Figure 2.
Figure 3.
Figure 5.
Figure 6.
Figure 7.
Figure 8.
Figure 9.
Figure 10.
Figure 11.
Figure 12.
Figure 13.
Figure 14.
HTS221 block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Pin configuration (bottom view). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
SPI slave timing diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
HTS221 electrical connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
SPI write protocol . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Multiple byte SPI write protocol (2-byte example). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
SPI read protocol in 3-wires mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Step 1: Linear interpolation to convert LSB to °C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Step 2: Linear interpolation to convert LSB to rH% . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
HLGA-6L (2 x 2 x 0.9 mm) package outline and mechanical data . . . . . . . . . . . . . . . . . . . 29
Carrier tape information for HLGA-6L package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
HLGA-6L package orientation in carrier tape . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Reel information for carrier tape of HLGA-6L package. . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
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HTS221
Sensor parameters and electrical specifications
2.2
Absolute maximum ratings
Stress above those listed as “Absolute maximum ratings” may cause permanent damage to
the device. This is a stress rating only and functional operation of the device under these
conditions is not implied. Exposure to maximum rating conditions for extended periods may
affect device reliability.
Table 7. Absolute maximum ratings
Symbol
Ratings
Maximum value
VDD
VIN
TSTG
ESD
Supply voltage
Input voltage on any control pin
Storage temperature range
Electrostatic discharge protection
-0.3 to 4.8
-0.3 to VDD +0.3
-40 to +125
2 (HBM)
Unit
V
V
°C
kV
Note:
Supply voltage on any pin should never exceed 4.8 V.
This device is sensitive to mechanical shock, improper handling can cause
permanent damage to the part.
This device is sensitive to electrostatic discharge (ESD), improper handling can
cause permanent damage to the part.
DocID026333 Rev 4
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| PDF Descargar | [ Datasheet HTS221.PDF ] | |
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