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WLCSP Digital Humidity and Temperature Sensor - SHTW1

? Ultra-small WLCSP: 1.3 × 0.7 × 0.5 mm3
? Fully calibrated and reflow solderable
? Ultra-low power consumption
? Power-up and measurement within 1 ms
? 1.8 V supply voltage
? Typical accuracy: ±3 %RH and ±0.4 °C

Model Number: SHTW1
Data Sheet:

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Product Specification

SHTW1 Digital Humidity and Temperature Sensor Product Summary
The SHTW1 is a digital humidity and temperature sensor in a wafer-level chip-scale package (WLCSP). This type of package opens up a new category of ultra-small humidity sensors which are suitable for applications with the tightest space constraints. The SHTW1 is designed especially for high-volume consumer electronics applications. The sensor is based on Sensirion’s CMOSens ? technology, which offers a complete sensor system on a single chip, consisting of a capacitive humidity sensor, a bandgap temperature sensor, analog and digital signal processing, A/D converter, calibration data memory, and a digital communication interface supporting I2C fast mode.

The sensor covers a humidity measurement range of 0 to 100 %RH and a temperature measurement range of -30 to 100 °C with a typical accuracy of ±3 %RH and ±0.4°C. The operation voltage of 1.8 V and the low power consumption make the SHTW1 suitable for mobile or wireless applications running on the tightest power budgets. With the industry-proven quality and reliability of Sensirion’s humidity and temperature sensors and constant accuracy over a large measurement range, the SHTW1 offers an unprecedented performance-to-price ratio. Tape and reel packaging together with suitability for standard SMD assembly processes make the SHTW1 predestined for high-volume applications.

SHTW1 Digital Humidity and Temperature Sensor FEATURES
? Ultra-small WLCSP: 1.3 × 0.7 × 0.5 mm³
? Fully calibrated and reflow solderable
? Ultra-low power consumption
? Power-up and measurement within 1 ms
? 1.8 V supply voltage
? Typical accuracy: ±3 %RH and ±0.4 °C

SHTW1 Digital Humidity and Temperature Sensor Specifications
Relative Humidity

Parameter	Conditions	Value	Units
Accuracy tolerance	Typ.	±3.0	%RH
Accuracy tolerance	Max.	see Figure 2	%RH
Repeatability	-	0.1	%RH
Resolution	-	0.01	%RH
Hysteresis	-	±1	%RH
Specified range	extended	0 to 100	%RH
Response time	τ_63%	8	s
Long-term drift	Typ.	<0.25	%RH/y

Temperature

Parameter	Conditions	Value	Units
Accuracy tolerance	Typ.	±0.4	°C
Accuracy tolerance	Max.	see Figure 3	°C
Repeatability	-	0.1	°C
Resolution	-	0.01	°C
Specified range	-	-30 to +100	°C
Response time	τ_63%	<5 to 30	s
Long-term drift	Normal range	<0.02	°C/y

Other Series:

Series	Typ. Humidity Accuracy %RH	Typ. Temperature Accuracy °C	Supply Voltage Range V	Interface	Package Size (L x W x H) mm
SHT30	±2	±0.2	2.4 to 5.5	I2C, analog voltage	2.5 x 2.5 x 0.9
SHT31	±2	±0.2	2.4 to 5.5	I2C, analog voltage	2.5 x 2.5 x 0.9
SHT35	±1.5	±0.1	2.4 to 5.5	I2C	2.5 x 2.5 x 0.9
SHTW1	±3	±0.4	1.62 to 1.98	I2C	1.3 x 0.7 x 0.5
SHTW2	±3	±0.4	1.62 to 1.98	I2C	1.3 x 0.7 x 0.5
SHTC1	±3	±0.3	1.62 to 1.98	I2C	2 x 2 x 0.8
SHT20	±3	±0.3	2.1 to 3.6	I2C, PWM, SDM	3 x 3 x 1.1
SHT21	±2	±0.3	2.1 to 3.6	I2C, PWM, SDM	3 x 3 x 1.1
SHT25	±1.8	±0.2	2.1 to 3.6	I2C	3 x 3 x 1.1
SHT10*	±4.5	±0.5	2.4 to 5.5	Digital Sbus	7.5 x 4.9 x 2.6
SHT11*	±3	±0.4	2.4 to 5.5	Digital Sbus	7.5 x 4.9 x 2.6
SHT15*	±2	±0.3	2.4 to 5.5	Digital Sbus	7.5 x 4.9 x 2.6
SHT71	±3	±0.4	2.4 to 5.5	Digital Sbus	19.5 x 5.08 x 3.1
SHT75	±1.8	±0.3	2.4 to 5.5	Digital Sbus	19.5 x 5.08 x 3.1
*Not recommended for new design (NRND); newer products available