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COMMERCIAL CARBON DIOXIDE SENSOR, 400 PPM TO
2000 PPM (UP TO 10000 PPM EXTENDED RANGE),
TABLE 4. TERMINATION (Continued)
PIN
PIN
NUMBER
FUNCTION
5
DVCC_out
8
Alarm_OC
9
PWM 1 kHz
The specified parameter relies on the subcontractor's specification and is not tested by Honeywell.
1
DESCRIPTION
from sensor's voltage regulator, output may be
used to logical level converter if master processor
runs at 5 V supply voltage.
series resistance
nominal voltage
allowed source current
voltage precision
(1)
open collector output for alarm indication
absolute maximum voltage range
internal pull up to G+ resistor
maximum sink current
1
saturation voltage
1
PWM output configured as digital output used for
direct reading by customer's microcontroller or to
provide analog output
duty cycle minimum
duty cycle maximum
PWM resolution
PWM period
absolute maximum voltage range
internal pull down to GND resistor
output low level
1
output high level
1
CRIR M1
induced noise or excessive current drawn may
affect sensor performance; external series resistor
is strongly recommended if this pin is used
no internal protection
3.3 ± 0.1 VDC
6 mA maximum
±0.75% is typical, ±3% is maximum
No internal protection, pulled up to G+ at processor
reset (power up and power down)
GND to 5 V + 0.5 V
1
10 k
100 mA
2.3 V to Vin + 0.3 V
No internal protection, pulled down at processor
reset (power up and power down)
0%, output low
100%, output high
0.5 us ± 4%
1 ms ± 4%
1
GND to DVCC_out + 0.5 V
120 k
0.4 VDC maximum at 8 mA sink
2.4 VDC minimum at 8 mA source
ELECTRONIC SPECIFICATION
Sensing and Internet of Things
Issue 1
000842
5
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