a5349 Allegro MicroSystems, Inc., a5349 Datasheet - Page 4

• Manufacturer Part Number: a5349
• Description: Ac Ionization Smoke Detector With Interconnect And Timer
• Manufacturer: Allegro MicroSystems, Inc.

A5349
ELECTRICAL CHARACTERISTICS
R
Continued on the next page…
Supply Voltage Range
Supply Current
Detector Input Current
Input Offset Voltage
Hysteresis
Common Mode Range
Active Guard Impedance
Oscillator Period
Oscillator Pulse Width
Timer Mode Duration
Low-Supply Threshold
Sensitivity Adjust Voltage
Horn Output Voltage
Horn Output On-Time
Horn Output Off-Time
TIMER START Logic Levels
TIMER START Input Current
TIMER OUT Pulldown Current
LED Output-On Current
LED Output On-Time
LED Output Off-Time
TIMINGRES
Characteristic
= 8.2 MΩ (unless otherwise noted)
V
V
V
I
OS(GUARD1)
OS(GUARD2)
t
Symbol
DETECTIN
osc(alarm)
t
t
t
CM(guard)
V
t
on(horn)
t
off(horn)
on(LED)
w(horn)
V
Z
Z
V
t
t
t
t
V
w(osc)
t
V
V
V
t
I
DD(th)
V
LED1
LED2
LED3
LED4
I
t
timer
V
horn
V
I
LED
AG1
AG2
osc
I
DD
HYS
SET
PD
CM
OH
IN
DD
OS
OL
IH
IL
Operating
V
V
0% to 40% RH, V
Active GUARD1
Active GUARD2
Detect comparator
No alarm to alarm
Guard amplifi er
Smoke comparator
GUARD1 to VSS
GUARD2 to VSS
No alarm
Local or remote alarm
After TIMER START high-to-low,
no smoke
T
LOW-V SET open circuit
V
SENSITIVITY SET open circuit
I
I
I
I
Local or remote alarm
Low supply
Local or remote alarm
Low supply
V
V
V
No alarm, timer mode
No alarm, in standby
No alarm, timer mode
Local alarm or test alarm
Remote alarm, no local smoke
1,2
OUT
OUT
OUT
OUT
A
DD
DD
SENSITIVITYSET
TIMERSTART
TIMEROUT
DD
= 0°C to 50°C,
at T
= 9.0 V, no alarm, no loads
= 12 V, no alarm, no loads
= 7.2 V, V
= 16 mA, V
= 16 mA, V
= –16 mA, V
= –16 mA, V
Test Conditions
A
= 25°C, V
= 0.5 V
= 9.0 V
LED
/ V
DD
DD
DD
DD
IN
= 1.0 V
DD
= 9.0 V
= 7.2 V
= 0 to 9.0 V
= 9.0 V
= 7.2 V
,
DD
= 9.0 V, V
AC Ionization Smoke Detector
Test Pin
14, 15
16, 15
15, 13
14, 15
13, 15
10, 11
10, 11
10, 11
10, 11
10, 11
10, 11
10, 11
10,11
SS
15
13
14
16
12
12
12
13
6
6
6
4
6
1
1
1
4
5
5
5
5
5
5
with Interconnect and Timer
= 0 V, C
OSCCAP
Min.
1.34
48.5
120
500
6.0
2.0
0.5
8.0
8.0
7.2
8.5
6.3
8.0
3.5
90
32
60
32
20
10
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
= 0.1 μF,
115 Northeast Cutoff
1.508.853.5000; www.allegromicro.com
Allegro MicroSystems, Inc.
Worcester, Massachusetts 01615-0036 U.S.A.
Always on
Always off
Always on
Typ.
1.67
8.35
1.67
130
500
160
9.0
5.0
0.1
8.8
—
—
—
—
—
—
—
10
40
10
10
—
50
—
—
10
80
40
—
—
—
—
—
V
V
DD
DD
Max.
±100
±100
±1.0
2.00
51.5
170
208
104
±50
9.0
7.8
0.5
0.9
1.5
12
12
48
12
12
12
48
80
—
—
—
—
—
—
—
—
—
—
—
—
– 0.5
– 2.0
%V
Units
min
mV
mV
mV
mV
mA
ms
ms
ms
ms
ms
μA
μA
pA
kΩ
kΩ
μA
μA
V
V
V
V
V
V
V
V
V
V
s
s
s
s
s
s
s
DD
4