A5348 查看數據表（PDF） - Allegro MicroSystems
零件编号
产品描述 (功能)
生产厂家
A5348 Datasheet PDF : 9 Pages
| |||
A5348
Ionization Smoke Detector
with Interconnect and Timer
Selection Guide
Part Number
A5348CA-T
A5348CA
Pb-Free
Yes
–
Packing
25 pieces per tube
Absolute Maximum Ratings*
Characteristic
Symbol
Notes
Rating
Units
Supply Voltage Range
VDD
Referenced to VSS
–0.5 to 15
V
Input Voltage Range
VIN
Referenced to VSS
–0.3 to VDD+ 0.3 V
Reverse Battery Condition Duration
tRBAT
10.5 V
20
s
Input Current
IIN
10
mA
Operating Ambient Temperature
TA
–10 to 60
ºC
Junction Temperature
TJ(max)
150
ºC
Storage Temperature Range
Tstg
–55 to 125
ºC
* CAUTION:BiCMOS devices have input static protection but are susceptible to damage when exposed to extremely high static electrical charges.
THERMAL CHARACTERISTICS
Characteristic
Symbol
Test Conditions*
Package Thermal Resistance
RθJA
4-layer PCB based on JEDEC standard
*Additional thermal information available on Allegro website.
Value Units
38 ºC/W
Pin-out Diagram
TIMER START 1
I/O 2
LOW-V SET 3
TIMER OUT 4
LED 5
VDD 6
TIMING RES 7
FEEDBACK 8
16 GUARD2
15 DETECT IN
14 GUARD1
13 SENSITIVITY SET
12 OSC CAP
11 HORN2
10 HORN1
9 VSS
Terminal List Table
Number
Name
Function
1
TIMER START Input to start reduced sensitivity timer mode
2
I/O
Input/output to interconnected detectors
3
LOW-V SET
Optionally used with a resistor to adjust low-battery
threshold
4
TIMER OUT
Optionally used with a resistor to adjust sensitivity
during timer mode
5
LED
Output to drive visible LED
6
VDD
Positive supply voltage
7
TIMING RES
Terminal for timing resistor, sets internal bias
(affects timing)
8
FEEDBACK Input for driving piezoelectric horn
9
VSS
Negative supply voltage
10
HORN1
Output for driving piezoelectric horn
11
HORN2
Complementary output for driving piezoelectric horn
12
OSC CAP
Terminal for charging/discharging an external
capacitor to run the oscillator
13
SENSITIVITY SET
Optionally used with a resistor to adjust sensitivity
for a specific chamber
14
GUARD1
Active guard 1 for detector input
15
DETECT IN Input from detector chamber
16
GUARD2
Active guard 2 for detector input
Allegro MicroSystems, Inc.
2
115 Northeast Cutoff
Worcester, Massachusetts 01615-0036 U.S.A.
1.508.853.5000; www.allegromicro.com
Share Link: 