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A5350 Datasheet, PDF (5/10 Pages) Allegro MicroSystems – Ionization Smoke Detector with Interconnect
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A5350
Ionization Smoke Detector with Interconnect
ELECTRICAL CHARACTERISTICS1,2 at TA = 25°C, VDD = 9.0 V, VSS = 0 V, COSCCAP = 0.1 μF,
RTIMINGRES = 8.2 MΩ (unless otherwise noted)
Characteristic
Symbol
Test Conditions
Test Pin
Min.
Typ.
Supply Voltage Range
Supply Current
Detector Input Current
Input Offset Voltage
Common Mode Range
Active Guard Impedance
Oscillator Period
Oscillator Pulse Width
Low-Battery Threshold
VDD Operating
IDD
VDD = 9.0 V, no alarm, no loads
VDD = 12 V, no alarm, no loads
IDETECTIN 0% to 40% RH, VIN = 0 to 9.0 V
VOS(GUARD1) Active GUARD1
VOS(GUARD2) Active GUARD2
VOS Detect comparator
VCM(guard) Guard amplifier
VCM Smoke comparator
ZAG1 GUARD1 to VSS
ZAG2 GUARD2 to VSS
tosc
No alarm
tosc(alarm) Local or remote alarm
tw(osc)
VDD(th)
TA = 0°C to 50°C,
LOW-V SET open circuit
6
6
6
15
14, 15
16, 15
15, 13
14, 15
13, 15
14
16
12
12
12
6
6.0
—
—
—
—
—
—
2.0
0.5
—
—
1.34
37.50
8.0
7.2
9.0
5.0
—
—
—
—
—
—
—
10
500
1.67
41.67
10
—
Horn Output Voltage
VOL
IOUT = 16 mA, VDD = 9.0 V
IOUT = 16 mA, VDD = 7.2 V
10, 11
—
10, 11
—
0.1
—
VOH
IOUT = –16 mA, VDD = 9.0 V
IOUT = –16 mA, VDD = 7.2 V
10, 11
10, 11
8.5
6.3
8.8
—
Horn Output On-Time
ton(horn)
tw(horn)
Local or remote alarm
Low battery
10,11
120
160
10, 11
8.0
10
Horn Output Off-Time
toff(horn)
thorn
Local or remote alarm
Low battery
10, 11
60
80
10, 11
32
40
LED Output-On Current
ILED VDD = 7.2 V, VLED = 1.0 V
5
10
—
LED Output On-Time
tw(LED)
5
8.0
10
tLED1 No alarm, in standby
5
32
40
LED Output Off-Time
tLED3 Local alarm or test alarm
5
tLED4 Remote alarm, no local smoke
5
0.76
0.97
—
No LED
pulses
Max.
12
9.0
12
±1.0
±100
±100
±50
VDD – 0.5
VDD – 2.0
—
—
2.00
45.84
12
7.8
0.5
0.9
—
—
208
12
104
48
—
12
48
1.14
—
Units
V
μA
μA
pA
mV
mV
mV
V
V
kΩ
kΩ
s
ms
ms
V
V
V
V
V
ms
ms
ms
s
mA
ms
s
s
s
Continued on the next page…
Allegro MicroSystems, Inc.
4
115 Northeast Cutoff
Worcester, Massachusetts 01615-0036 U.S.A.
1.508.853.5000; www.allegromicro.com
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