a5355ca Allegro MicroSystems, Inc., a5355ca Datasheet - Page 3

• Manufacturer Part Number: a5355ca
• Description: Smoke Detector With Interconnect
• Manufacturer: Allegro MicroSystems, Inc.

ELECTRICAL CHARACTERISTICS at T
R
NOTE 1: Negative current is defined as coming out of (sourcing) the specified device pin.
NOTE 2: Alarm (Smoke) Condition is defined as V
7
5355
SMOKE DETECTOR
WITH INTERCONNECT
Characteristic
Supply Voltage Range
Detector Input Current
Input Offset Voltage
Common Mode Range
Active Guard Impedance
Oscillator Period
Oscillator Pulse Width
Low Voltage Threshold
Horn Output Voltage
Horn Output ON Time
Horn Output OFF Time
LED Output ON Current
LED Output ON Time
LED Output OFF Time
I/O Current
I/O Alarm Voltage
I/O Delay
Supply Current
= 8.2 M (unless otherwise noted).
14-15
16-15
15-13
14-15
13-15
10-11
10-11
10-11
Test
Pin
15
14
16
12
6
4
6
5
5
5
2
2
2
6
15
> V
13
; No Alarm (No Smoke) Condition as V
A
= +25 C, V
Operating
0 to 40% RH, V
Active Guard
Active Guard
Detect Comparator
Guard Amplifier
Smoke Comparator
to V
to V
No Alarm
Alarm
T
I
I
I
I
Alarm
Low Battery
Alarm
Low Battery
V
No Alarm, In Standby
No Alarm, V
Alarm, V
External “Alarm” In
“Alarm” Out
V
V
OUT
OUT
OUT
OUT
A
DD
DD
DD
= 0 to 50 C
SS
SS
= 16 mA, V
= 16 mA, V
= -16 mA, V
= -16 mA, V
= 7.2 V, V
= 9.0 V, No Alarm, No Loads
= 12 V, No Alarm, No Loads
I/O
Test Conditions
= V
DD
I/O
OUT
= V
DD
IN
= 9.0 V, V
DD
DD
DD
DD
= 0 to 9.0 V
- 2.0 V
= 1.0 V
DD
= 9.0 V
= 7.2 V
= 9.0 V
= 7.2 V
- 2.0 V
SS
15
< V
= 0 V, C
13
.
Min.
1.34
-7.5
120
6.0
2.0
0.5
8.0
7.2
8.5
6.3
8.0
8.0
3.0
32
60
32
10
32
25
—
—
—
—
—
—
—
—
—
—
—
12
= 0.1 F,
Typ.
1.67
500
160
9.0
0.1
8.8
3.0
5.0
10
40
10
10
80
40
10
40
—
—
—
—
—
—
—
—
—
—
—
—
—
—
Limits
V
V
DD
DD
Max.
2.00
208
104
7.8
0.5
0.9
9.0
12
100
100
48
12
12
48
12
48
60
12
—
—
—
—
—
—
—
—
1.0
50
- 0.5
- 2.0
Units
mV
mV
mV
mA
mA
ms
ms
ms
ms
ms
ms
pA
k
k
V
V
V
V
V
V
V
V
V
s
s
s
s
A
A
A