FIC03272 반도체 회로 부품 판매점
Microprocessor
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 ETC |
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TECHNICAL INFORMATION FOR FIC03272
Technical Information for FIC03272--microprocessor for
use with TGS4161 in automatic CO2 monitors
The FIC03272 is a microprocessor
for handling signals from the
TGS4161 carbon dioxide sensor.
This microprocessor enables
maintenance-free automation of
the air quality control in buildings
when connected with appliances
such as ventilation fans, air
cleaning systems, etc.
Page
Introduction.........................................................................................2
Features................................................................................................2
Basic Function...............................................................................................3
Pin Arrangement...........................................................................................3
Pin Functions
Pins for the initial setting of operational conditions....................................3
Gas sensor signal Vg input .........................................................................5
Thermistor signal VT input .......................................................................5
Bias signal output......................................................................................5
Manual benchmark reset signal input........................................................5
Sensor signal output....................................................................................5
LED display signal output..........................................................................6
Malfunction signal output.........................................................................6
Benchmark renewal status signal output........................................................6
Line test mode...........................................................................................7
Electrical Circuits for FIC03272........................................................................7
Hardware Specifications....................................................................................12
Revised 06/04
IMPORTANT NOTE: OPERATING CONDITIONS IN WHICH FIGARO SENSORS ARE USED WILL VARY
WITH EACH CUSTOMER’S SPECIFIC APPLICATIONS. FIGARO STRONGLY RECOMMENDS
CONSULTING OUR TECHNICAL STAFF BEFORE DEPLOYING FIGARO SENSORS IN YOUR APPLICATION
AND, IN PARTICULAR, WHEN CUSTOMER’S TARGET GASES ARE NOT LISTED HEREIN. FIGARO
CANNOT ASSUME ANY RESPONSIBILITY FOR ANY USE OF ITS SENSORS IN A PRODUCT OR
APPLICATION FOR WHICH SENSOR HAS NOT BEEN SPECIFICALLY TESTED BY FIGARO.
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www.DataSheet4U.com
TECHNICAL INFORMATION FOR FIC03272
Introduction
The FIC03272 is a microprocessor for handling signals
from the TGS4161 carbon dioxide sensor, enabling
maintenance-free automation of air quality control
in buildings when connected with appliances such
as ventilation fans, air cleaning systems, etc.
The microprocessor takes in the output voltage, or
electromotive force (EMF), from the TGS4161 sensor
and outputs a signal which corresponds to a
concentration of CO2 in the environment. CO2
concentrations are calculated in the microprocessor
based on ∆EMF, which is the change in the value of
EMF from the value in a normal clean environment.
The microprocessor also contains software to
compensate the sensor’s signal for changes in
temperature and basic environmental factors.
1. Features
1-1 Automatic calibration
The FIC03272 uses the concept of a benchmark value
of EMF in order to provide automatic calibration. The
benchmark value is assumed to be equal to the level
of CO2 which exists in ambient air (approx. 400ppm).
CO2 concentrations are calculated periodically by
determining the change of EMF from the benchmark
level (∆EMF). In order to offset the effects of sensor
signal drift which are caused by environmental
temperature and air contaminants, the micro-
processor automatically renews the benchmark level
to the current EMF value whenever a lower CO2
concentration than the current benchmark is
calculated. Using this method of automatic calibra-
tion, very stable characteristics can be expected for
the sensor, allowing for reliable monitoring of CO2
levels and long term maintenance-free ventilation
control.
1-2 High CO2 sensitivity and wide detectable range of
400~3000ppm
By programming the microprocessor to take into
consideration the unique performance characteristics
of the TGS4161, reliable readings of CO2 concen-
trations within a wide range (400~3000ppm) can be
achieved, satisfying the requirements of building
ventilation control applications.
Revised 06/04
X-TAL
Input port for
microprocessor reset
Input port for
test mode
Input port for +4.4V
Input port for +3.8V
Gas sensor signal
input port
Thermistor signal
input port
Input port for damper
control thresholds
Input port for setting
warm up period
Input port for setting
benchmark renewal (VL)
Input port for setting
benchmark renewal (TK)
Input port for automatic
benchmark reset (Tr)
GND
1 XOUT
2 XIN
3 RESET
4 R70
5 R71
6 VAREF
7 AIN0
8 AIN1
9 AIN2
10 R43
11 R50
12 R51
13 R52
14 VSS
VDD 28
KEO 27
R92 26
R91 25
R90 24
R83 23
R82 22
R81 21
R80 20
R63 19
R62 18
R61 17
R60 16
R53 15
Input port for +4.4V
Input port for manual
benchmark reset
Output port for benchmark
renewal status signal
Output port for CO2
concentration signal
Output port for
bias signal
GND
GND
GND
GND
Output port for green LED
Output port for red LED
Output port for malfunction signal
Output port for damper
control signal
GND
Figure 1 - Pin arrangement for FIC03272
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FIC03272 data
데이터시트 다운로드 :
[ FIC03272.PDF ]
[ FIC03272 다른 제조사 검색 ]
국내 전력반도체 판매점
상호 : 아이지 인터내셔날
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[ 홈페이지 ]
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