I
2
C H
UMIDITY
Features
AND
T
E M P E R A T U R E
S
E N S O R
Precision Relative Humidity Sensor
± 5% RH (max), 0–80% RH
High Accuracy Temperature Sensor
±1 °C (max), –10 to 85 °C
0 to 100% RH operating range
–40 to +125 °C operating range
Wide operating voltage
(1.9 to 3.6 V)
Low Power Consumption
150 µA active current
60 nA standby current
Factory-calibrated
I
2
C Interface
Integrated on-chip heater
9.1mmx10.8 mm SMT Module
Excellent long term stability
Optional factory-installed cover
Low-profile
Protection during reflow
Excludes liquids and particulates
Applications
TH06: 9.1mmx10.8 mm SMT Module
HVAC/R
Thermostats/humidistats
Respiratory therapy
White goods
Indoor weather stations
Micro-environments/data centers
Automotive climate control and
defogging
Asset and goods tracking
Mobile phones and tablets
Description
The TH06 I2C Humidity and Temperature Sensor is a monolithic CMOS IC integrating humidity and temperature
sensor elements, an analog-to-digital converter, signal processing, calibration data, and an I2C Interface. The
patented use of industry-standard, low-K polymeric dielectrics for sensing humidity enables the construction of low-
power, monolithic CMOS Sensor ICs with low drift and hysteresis, and excellent long term stability.
The humidity and temperature sensors are factory-calibrated and the calibration data is stored in the on-chip non-
volatile memory. This ensures that the sensors are fully interchangeable, with no recalibration or software changes
required
The TH06 is reflow solderable. It can be used as a hardware- and software-compatible drop-in upgrade for existing
RH/ temperature sensors , featuring precision sensing over a wider range and lower power consumption. The
optional factory-installed cover offers a low profile, convenient means of protecting the sensor during assembly (e.g.,
reflow soldering) and throughout the life of the product, excluding liquids (hydrophobic/oleophobic) and particulates.
The TH06 offers an accurate, low-power, factory-calibrated digital solution ideal for measuring humidity, dew-point,
and temperature, in applications ranging from HVAC/R and asset tracking to industrial and consumer platforms.
Tel:+86-755-82973805
Fax: +86-755-82973550
Email:sales@hoperf.com
http://www.hoperf.com
1
1. Electrical Specifications
Unless otherwise specified, all min/max specifications apply over the recommended operating conditions.
Table 1. Recommended Operating Conditions
Parameter
Power Supply
Operating Temperature
Symbol
V
DD
T
A
Test Condition
Min
1.9
–40
—
Typ
Max
3.6
+125
Unit
V
°C
Table 2. General Specifications
1.9 < V
DD
< 3.6 V; T
A
= –40 to 125 °C default conversion time unless otherwise noted.
Parameter
Input Voltage High
Input Voltage Low
Input Voltage Range
Input Leakage
Output Voltage Low
Symbol
V
IH
V
IL
V
IN
I
IL
V
OL
Test Condition
SCL, SDA pins
SCL, SDA pins
SCL, SDA pins with respect to GND
SCL, SDA pins
SDA pin; I
OL
= 2.5 mA; V
DD
= 3.3 V
SDA pin; I
OL
= 1.2 mA;
V
DD
= 1.9 V
Min
0.7xV
DD
—
0.0
—
—
—
—
—
—
—
—
—
—
—
Typ
—
—
—
—
—
—
150
90
0.06
0.06
3.5
3.5
20
3.1
Max
—
0.3xV
DD
V
DD
1
0.6
0.4
180
120
0.62
3.8
4.0
4.0
—
—
Unit
V
V
V
μA
V
V
μA
μA
μA
μA
mA
mA
μA
mA
Current
Consumption
I
DD
RH conversion in progress
Temperature conversion in progress
Standby, –40 to +85 °C
2
Standby, –40 to +125 °C
2
Peak IDD during powerup
3
Peak IDD during I
2
C operations
4
After writing to user registers
5
Heater Current
6
I
HEAT
Notes:
1.
Initiating a RH measurement will also automatically initiate a temperature measurement. The total conversion time will
be t
CONV
(RH) + t
CONV
(T).
2.
No conversion or I
2
C transaction in progress. Typical values measured at 25 °C.
3.
Occurs once during powerup. Duration is <5 msec.
4.
Occurs during I
2
C commands for Reset, Read/Write User Registers, Read EID, and Read Firmware Version. Duration is
<100 µs when I
2
C clock speed is >100 kHz (>200 kHz for 2-byte commands).
5.
IDD after a user register write. Initiating any other subsequent I
2
C transaction on the same bus (such as the user
register read, starting an RH measurement, or traffic directed at other I
2
C devices) will transition the device to standby
mode.
6.
Additional current consumption when HTRE bit enabled. See section “5.5. Heater” for more information
Tel:+86-755-82973805
Fax: +86-755-82973550
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http://www.hoperf.com
2
Table 2. General Specifications (Continued)
1.9 < V
DD
< 3.6 V; T
A
= –40 to 125 °C default conversion time unless otherwise noted.
Parameter
Conversion Time
1
Symbol
t
CONV
Test Condition
12-bit RH
11-bit RH
10-bit RH
8-bit RH
14-bit temperature
13-bit temperature
12-bit temperature
11-bit temperature
Min
—
—
—
—
—
—
—
—
—
—
—
Typ
10
5.8
3.7
2.6
7
4
2.4
1.5
18
—
5
Max
12
7
4.5
3.1
10.8
6.2
3.8
2.4
25
80
Unit
ms
Powerup Time
t
PU
From V
DD
≥
1.9 V to ready for a
conversion, 25 °C
From V
DD
≥
1.9 V to ready for a con-
version, full temperature range
After issuing a software reset
command
ms
15
Notes:
1.
Initiating a RH measurement will also automatically initiate a temperature measurement. The total conversion time will
be t
CONV
(RH) + t
CONV
(T).
2.
No conversion or I
2
C transaction in progress. Typical values measured at 25 °C.
3.
Occurs once during powerup. Duration is <5 msec.
4.
Occurs during I
2
C commands for Reset, Read/Write User Registers, Read EID, and Read Firmware Version. Duration is
<100 µs when I
2
C clock speed is >100 kHz (>200 kHz for 2-byte commands).
5.
IDD after a user register write. Initiating any other subsequent I
2
C transaction on the same bus (such as the user
register read, starting an RH measurement, or traffic directed at other I
2
C devices) will transition the device to standby
mode.
6.
Additional current consumption when HTRE bit enabled. See section “5.5. Heater” for more information
Table 3. I
2
C Interface Specifications
1
1.9
≤
V
DD
≤
3.6 V; T
A
= –40 to +125 °C unless otherwise noted.
Parameter
Hysteresis
SCLK Frequency
2
SCL High Time
SCL Low Time
Start Hold Time
Symbol
V
HYS
f
SCL
t
SKH
t
SKL
t
STH
Test Condition
High-to-low versus low-to-
high transition
Min
0.05 x V
DD
—
0.6
1.3
0.6
Typ
—
—
—
—
—
Max
—
400
—
—
—
Unit
V
kHz
µs
µs
µs
Notes:
1.
All values are referenced to V
IL
and/or V
IH
.
2.
Depending on the conversion command, the TH06 may hold the master during the conversion (clock stretch). At
above 100 kHz SCL, the TH06 may also hold the master briefly for user register and device ID transactions. At the
highest I
2
C speed of 400 kHz the stretching will be <10 µs.
3.
Pulses up to and including 50 ns will be suppressed.
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http://www.hoperf.com
3
Table 3. I
2
C Interface Specifications
1
(Continued)
1.9
≤
V
DD
≤
3.6 V; T
A
= –40 to +125 °C unless otherwise noted.
Parameter
Start Setup Time
Stop Setup Time
Bus Free Time
SDA Setup Time
SDA Hold Time
SDA Valid Time
SDA Acknowledge Valid Time
Suppressed Pulse Width
3
Symbol
t
STS
t
SPS
t
BUF
t
DS
t
DH
t
VD;DAT
t
VD;ACK
t
SPS
Test Condition
Min
0.6
0.6
Typ
—
—
—
—
—
—
—
—
Max
—
—
—
—
—
0.9
0.9
—
Unit
µs
µs
µs
ns
ns
µs
µs
ns
Between Stop and Start
1.3
100
100
From SCL low to data valid
From SCL low to data valid
—
—
50
Notes:
1.
All values are referenced to V
IL
and/or V
IH
.
2.
Depending on the conversion command, the TH06 may hold the master during the conversion (clock stretch). At
above 100 kHz SCL, the TH06 may also hold the master briefly for user register and device ID transactions. At the
highest I
2
C speed of 400 kHz the stretching will be <10 µs.
3.
Pulses up to and including 50 ns will be suppressed.
1/f
SCL
t
SP
SCL
t
SKH
t
SKL
t
BUF
t
STH
t
DS
t
DH
t
SPS
SDA
D7
D6
D5
D0
R/W
ACK
Start Bit
Stop Bit
t
STS
t
VD
:
ACK
Figure 1. I
2
C Interface Timing Diagram
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4
Table 4. Humidity Sensor
1.9
≤
V
DD
≤ 3.6
V; T
A
= 30 °C; default conversion time unless otherwise noted.
Parameter
Operating Range
1
Accuracy
2, 3
Repeatability/Noise
Symbol
Test Condition
Non-condensing
0 – 80% RH
80 – 100% RH
12-bit resolution
11-bit resolution
10-bit resolution
8-bit resolution
Min
0
—
—
—
—
—
—
—
—
—
Typ
—
±4
See Figure 2
0.025
0.05
0.1
0.2
18
0.05
±1
< 0.25
Max
100
±5
—
—
—
—
—
—
—
—
Unit
%RH
%RH
%RH RMS
Response Time
4
Drift vs. Temperature
Hysteresis
Long Term Stability
3
τ
63%
1 m/s airflow
S
%RH/°C
%RH
%RH/yr
Notes:
1.
Recommended humidity operating range is 20% to 80% RH (non-condensing) over –10 °C to 60 °C. Prolonged
operation beyond these ranges may result in a shift of sensor reading, with slow recovery time.
2.
Excludes hysteresis, long term drift, and certain other factors and is applicable to non-condensing environments only.
See section “4.1. Relative Humidity Sensor Accuracy” for more details.
3.
Drift due to aging effects at typical room conditions of 30 °C and 30% to 50% RH. May be impacted by dust, vaporized
solvents or other contaminants, e.g., out-gassing tapes, adhesives, packaging materials, etc. See section “4.7. Long
Term Drift/Aging” .
4.
Response time to a step change in RH. Time for the RH output to change by 63% of the total RH change.
Tel:+86-755-82973805
Fax: +86-755-82973550
Email:sales@hoperf.com
http://www.hoperf.com
5
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