A5350CA-T

A5350CA-T Datasheet

A5350 Ionization Smoke Detector with Interconnect

Part	Datasheet
A5350CA-T	A5350CA-T (pdf)

Related Parts	Information
A5350CA	A5350CA

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A5350 Ionization Smoke Detector with Interconnect Discontinued Product These parts are no longer in production The device should not be purchased for new design applications. Samples are no longer available. Date of status change November 2, 2009 Recommended Substitutions: NOTE For detailed information on purchasing options, contact your local Allegro field applications engineer or sales representative. A5350 Ionization Smoke Detector with Interconnect Package 16-pin DIP suffix A : Not to scale The A5350 is a low-current, BiCMOS circuit providing all of the required features for an ionization-type smoke detector. A networking capability allows as many as 125 units to be interconnected so that if any unit senses smoke all units will sound their alarm. In addition, special features are incorporated to facilitate alignment and test of the finished smoke detector. The internal oscillator and timing circuitry keep standby power to a minimum by powering down the device for seconds and sensing for smoke for only 10 ms. Every 24 on-off cycles, a check is made for a low battery condition. By substituting other types of sensors or a switch for the ionization detector, this device can be used in numerous other battery-operated safety/security applications. The A5350 is supplied in a low-cost 16-pin dual in-line plastic package DIP . It is rated for continuous operation over the temperature range of to 60°C. The Pb lead free version suffix has 100% matte tin leadframe plating. To / from other units 200 Ω B 16 GUARD2 DETECT IN A5350 LOW-V SET GUARD1 4 NC 330 Ω 5 13 SENSITIVITY SET 12 OSC CAP HORN2 MΩ 7 TIMING RES 10 HORN1 FEEDBACK 9 VSS 200 k Ω Push to Test 200 k Ω MΩ A A Use an external resistor divider to set sensitivity for a particular smoke chamber. B A resistor to VSS or VDD may be added to this pin to modify low battery voltage threshold. C Value of component will vary, based on the piezoelectric horn used. MΩ C 220 kΩ C A5350 Ionization Smoke Detector with Interconnect Selection Guide Pb-Free Packing

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A5350 Ionization Smoke Detector with Interconnect

Discontinued Product

These parts are no longer in production The device should not be purchased for new design applications. Samples are no longer available.

Date of status change November 2, 2009

Recommended Substitutions:

NOTE For detailed information on purchasing options, contact your local Allegro field applications engineer or sales representative.

A5350 Ionization Smoke Detector with Interconnect

Package 16-pin DIP suffix A :

Not to scale

The A5350 is a low-current, BiCMOS circuit providing all of the required features for an ionization-type smoke detector. A networking capability allows as many as 125 units to be interconnected so that if any unit senses smoke all units will sound their alarm. In addition, special features are incorporated to facilitate alignment and test of the finished smoke detector.

The internal oscillator and timing circuitry keep standby power to a minimum by powering down the device for seconds and sensing for smoke for only 10 ms. Every 24 on-off cycles, a check is made for a low battery condition. By substituting other types of sensors or a switch for the ionization detector, this device can be used in numerous other battery-operated safety/security applications.

The A5350 is supplied in a low-cost 16-pin dual in-line plastic package DIP . It is rated for continuous operation over the temperature range of to 60°C. The Pb lead free version suffix has 100% matte tin leadframe plating.

To / from other units
200 Ω B
16 GUARD2

DETECT IN

A5350

LOW-V SET

GUARD1
4 NC 330 Ω 5
13 SENSITIVITY SET
12 OSC CAP

HORN2

MΩ 7 TIMING RES
10 HORN1

FEEDBACK
9 VSS
200 k Ω

Push to Test
200 k Ω

MΩ A

A Use an external resistor divider to set sensitivity for a particular smoke chamber.

B A resistor to VSS or VDD may be added to this pin to modify low battery voltage threshold.

C Value of component will vary, based on the piezoelectric horn used.

MΩ C
220 kΩ C

A5350

Ionization Smoke Detector with Interconnect

Selection Guide

Pb-Free

Packing

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Datasheet ID: A5350CA-T 516041