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RE46C129 Schematic ( Datenblatt PDF ) - R & E International

Teilenummer RE46C129
Beschreibung CMOS Ionization Smoke Detector ASIC
Hersteller R & E International
Logo R & E International Logo 

Gesamt 8 Seiten
		
RE46C129 Datasheet, Funktion
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R&E International
RE46C129
CMOS Ionization Smoke Detector ASIC with Interconnect
Product Specification
General Description
The RE46C129 is low power CMOS ionization type
smoke detector IC. With few external components this
circuit will provide all the required features for an
ionization type smoke detector.
An internal oscillator strobes power to the smoke
detection circuitry for 10.5mS every 1.66 seconds to
keep standby current to a minimum. A check for a low
battery condition is performed every 40 seconds when
in standby.
An interconnect pin allows multiple detectors to be
connected such that when one units alarms all units will
sound.
Although this device was designed for smoke detection
utilizing an ionization chamber it could be used in a
variety of security applications.
Utilizing low power CMOS technology the RE46C129
was designed for use in smoke detectors that comply
with Underwriters Laboratory Specification UL217 and
UL268.
Features
Guard Outputs for Ion Detector Input
+/-0.75pA Detect Input Current
Internal Reverse Battery Protection
Low Quiescent Current Consumption (<6.5uA)
Available in 16L PDIP or 16L N SOIC
ESD Protection on all Pins
Internal Low Battery Detection
Interconnect up to 40 Detectors
Compatible with Allegro A5350
Available in Standard Packaging or RoHS Compliant
Pb Free Packaging.
Pin Configuration
NC
IO
LBADJ
NC
LED
VDD
RBIAS
FEED
1
2
3
4
5
6
7
8
16 GUARD2
15 DETECT
14 GUARD1
13 VSEN
12 OSCAP
11 HS
10 HB
9 VSS
ABSOLUTE MAXIMUM RATINGS
PARAMETER
Supply Voltage
Input Voltage Range Except FEED, IO
FEED Input Voltage Range
IO Input Voltage Range
Reverse Battery Time
Input Current except FEED
Operating Temperature
Storage Temperature
Maximum Junction Temperature
SYMBOL
VDD
Vin
Vinfd
Vio1
TRB
Iin
TA
TSTG
TJ
VALUE
15
-.3 to Vdd +.3
-10 to +22
-.3 to 17
5
10
-10 to 60
-55 to 125
150
UNITS
V
V
V
V
S
mA
°C
°C
°C
Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. These are
stress ratings only and operation at these conditions for extended periods may affect device reliability.
This product utilizes CMOS technology with static protection; however proper ESD prevention procedures should be used
when handling this product. Damage can occur when exposed to extremely high static electrical charge.
Telephone 610.992.0727
Facsimile 610.992.0734
E-mail: rande@randeint.com
Page 1 of 8
DS-RE46C129-121806
This datasheet contains PROPRIETARY and CONFIDENTIAL information.






RE46C129 Datasheet, Funktion
RE46C129
CMOS Ionization Smoke Detector ASIC with Interconnect
Product Specification
Typical Application
R&E International
Figure 2
Notes:
1) C2 should be located as close as possible to the device power pins.
2) Select R8 and R9 to set the smoke chamber sensitivity.
3) Low battery trip can be modified by external resistance on pin 3, see device description.
Telephone 610.992.0727
Facsimile 610.992.0734
E-mail: rande@randeint.com
Page 6 of 8
DS-RE46C129-121806
This datasheet contains PROPRIETARY and CONFIDENTIAL information.

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