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Número de pieza | TH02 | |
Descripción | DIGITAL I2C HUMIDITY AND TEMPERATURE SENSOR | |
Fabricantes | HOPERF | |
Logotipo | ||
Hay una vista previa y un enlace de descarga de TH02 (archivo pdf) en la parte inferior de esta página. Total 26 Páginas | ||
No Preview Available ! TH02
DIGITAL I2C HUMIDITY AND
TEMPERATURE SENSOR
Version No.
V1.0
V1.1
Revisions
First released version
Modify the current part
Date
2013.05
2013.08
Tel:+86-755-82973805 Fax: +86-755-82973550 Email:[email protected] http://www.hoperf.com
-1-
Free Datasheet http://www.datasheet4u.com/
1 page Table 3. General Specifications (Continued)
2.1 ≤ VDD ≤ 3.6 V; TA = 0 to 70 °C (F grade) or –40 to 85 °C (G grade) unless otherwise noted.
Parameter
Power Consumption
Symbol
IDD
Test Condition
RH conversion in progress
Temperature conversion in
progress
Min
—
—
Typ
240
320
Average for 1 temperature
and 1 RH conversion /
minute
No conversion in progress;
VDD = 3.3 V;
SDA = SCL ≥ VIH
—
—
1
150
Conversion Time
Power Up Time
tCONV
tPU
14-bit temperature; 12-bit RH
(Fast = 0)
13-bit temperature; 11-bit RH
(Fast = 1)
From VDD ≥ 2.1V to ready for
a temp/RH conversion
35
18
10
Notes:
1. SDA and SCL pins have an internal 75 kΩ pull-up resistor to VDD
TH02
Max
560
565
—
Unit
µA
µA
µA
— µA
40
ms
21
15 ms
Tel:+86-755-82973805 Fax: +86-755-82973550 Email:[email protected] http://www.hoperf.com
- 5-
Free Datasheet http://www.datasheet4u.com/
5 Page TH02
2.3. Linearization
Capacitive relative humidity sensors require linearization. The TH02 accuracy specification applies after correction
of non-linearity errors. The recommended linearization technique is to correct the measured relative humidity
value with a 2nd order polynomial; the linear relative humidity (RH) value is calculated as follows:
RHLinear = RHValue – ((RHValue)2 × A2 + RHValue × A1 + A0)
Where:
RHLinear is the corrected relative humidity value in %RH
RHValue is the uncorrected (measured) relative humidity value in %RH
A2, A1, and A0 are unit-less correction coefficients derived through characterization of TH02s
their values depend on whether compensation for a typical solder reflow is required
The values for the correction coefficients are shown in Table 8.
Table 8. Linearization Coefficients
Coefficient
A0
A1
A2
Value
–4.7844
0.4008
–0.00393
Tel:+86-755-82973805 Fax: +86-755-82973550 Email:[email protected] http://www.hoperf.com
- 11 -
Free Datasheet http://www.datasheet4u.com/
11 Page |
Páginas | Total 26 Páginas | |
PDF Descargar | [ Datasheet TH02.PDF ] |
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