MCZ145012EG/R2 FREESCALE [Freescale Semiconductor, Inc], MCZ145012EG/R2 Datasheet

MCZ145012EG/R2

Manufacturer Part Number

MCZ145012EG/R2

Description

Photoelectric Smoke Detector IC with I/O and Temporal Pattern Horn Driver

Manufacturer

FREESCALE [Freescale Semiconductor, Inc]

Datasheet

1.MCZ145012EGR2.pdf (14 pages)

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Freescale Semiconductor

Technical Data

Photoelectric Smoke Detector IC with

I/O and Temporal Pattern Horn Driver

sophisticated very-low-power analog and digital circuitry. The IC is used with an

infrared photoelectric chamber. Detection is accomplished by sensing scattered

light from minute smoke particles or other aerosols. When detection occurs, a

pulsating alarm is sounded via on-chip push-pull drivers and an external

piezoelectric transducer.

(photodiodes). Two external capacitors, C1 and C2, C1 being the larger, determine

the gain settings. Low gain is selected by the IC during most of the standby state.

Medium gain is selected during a local-smoke condition. High gain is used during

push-button test. During standby, the special monitor circuit which periodically

checks for degraded chamber sensitivity uses high gain also.

for common signaling. An on-chip current sink provides noise immunity when the I/

O is an input. A local-smoke condition activates the short-circuit-protected I/O

driver, thereby signaling remote smoke to the interconnected units. Additionally, the

I/O pin can be used to activate escape lights, enable auxiliary or remote alarms,

and/or initiate auto-dialers.

using a pulsed load current from the LED pin. The trip point is set using two external

resistors. The supply for the MC145012 can be a 9.0 V battery.

smoke condition. A pulsating audible alarm with no LED flash indicates a remote-

smoke condition. A beep or chirp occurring virtually simultaneously with an LED

flash indicates a low-supply condition. A beep or chirp occurring halfway between

LED flashes indicates degraded chamber sensitivity. A low-supply condition does

not affect the smoke detection capability if V

condition and degraded chamber sensitivity can be further distinguished by

performing a push-button (chamber) test.

Features

•

MC145012P

MC145012ED

MC145012DW

MCZ145012EG/R2

The CMOS MC145012 is an advanced smoke detector component containing

The variable-gain photo amplifier allows direct interface to IR detectors

The I/O pin, in combination with V

While in standby, the low-supply detection circuitry conducts periodic checks

A visible LED flash accompanying a pulsating audible alarm indicates a local-

Circuit is designed to operate in smoke detector systems that comply with

UL217 and UL268 Specifications

Operating Voltage Range: 6.0 V to 12 V, Average Supply Current: 8 µA

Operating Temperature Range: -10 to 60°C

I/O Pin Allows Units to be Interconnected for Common Signalling

Power-On Reset Places IC in Standby Mode (Non-Alarm State)

Electrostatic Discharge (ESD) and Latch Up Protection Circuitry on All Pins

Chip Complexity: 2000 FETs, 12 NPNs, 16 Resistors, and 10 Capacitors

Supports NFPA 72, ANSI S3.41, and ISO 8201 Audible Emergency Evacuation

Signals

Ideal for battery-powered applications

Pb-Free Packaging Designated by Suffix Codes ED and EG

Device

ORDERING INFORMATION

Temp. Range

-55 to +125°C

, can be used to interconnect up to 40 units

Case No.

751G-04

648-08

≥ 6.0 V. Therefore, the low-supply

16 SOICW (Pb-Free)

16 Lead Plastic Dip

16 PDIP (Pb-Free)

16 Lead SOICW

Package

STROBE

DETECT

DETECTOR IC WITH I/O AND

BRASS

Figure 1. Pin Connections

PHOTOELECTRIC SMOKE

Document Number: MC145012

IRED

VDD

TEMPORAL PATTERN

I/O

ED SUFFIX (PB-FREE)

EG SUFFIX (PB-FREE)

MC145012

SOIC PACKAGE

HORN DRIVER

CASE 751G-04

PLASTIC DIP

CASE 648-08

DW SUFFIX

P SUFFIX

Rev 9.0, 11/2006

TEST

LOW-SUPPLY

TRIP

VSS

OSC

LED

FEEDBACK

SILVER

Related parts for MCZ145012EG/R2

MCZ145012EG/R2 Summary of contents

Page 1

... Pb-Free Packaging Designated by Suffix Codes ED and EG ORDERING INFORMATION Device Temp. Range MC145012P MC145012ED -55 to +125°C MC145012DW MCZ145012EG/R2 © Freescale Semiconductor, Inc., 2006. All rights reserved. , can be used to interconnect units ≥ 6.0 V. Therefore, the low-supply DD Case No. Package 16 Lead Plastic Dip 648-08 ...

Page 2

DETECT 12 OSC OSC TEST 4 STROBE 15 LOW-SUPPLY TRIP MC145012 AMP Smoke COMP REF Gate On/off Timing Logic GATE ...

Page 3

Table 1. Maximum Ratings All voltages are with respect to ground unless otherwise noted. Exceeding these ratings may cause a malfunction or permanent damage to the device. (Voltages referenced Rating DC Supply Voltage DC Input Voltage ...

Page 4

Table 2. Electrical Characteristics (Voltages Referenced 60°C Unless Otherwise Indicated Characteristic Power Supply Voltage Range Supply Threshold Voltage, Low-Supply Alarm Average Operating Supply Current (per Package) (Does Not Include Current ...

Page 5

Table 3. AC Electrical Characteristics (Reference Timing Diagram Figure 6 and Figure (T = 25° 9.0 V, Component Values from A DD No. Parameter 1 Oscillator Period 2 LED Pulse Period LED Pulse Width ...

Page 6

Figure 4. AC Characteristics versus Temperature 1.03 1.02 1.01 1.00 0.99 0. Figure 5. RC Component Variation Over Temperature MC145012 7.0 8.0 ...

Page 7

Sensors Freescale Semiconductor Figure 6. Typical Standby Timing MC145012 7 ...

Page 8

MC145012 8 Figure 7. Typical Local Smoke Timing Sensors Freescale Semiconductor ...

Page 9

C1 0.047 µF (10) C2 4700 pF R8 8.2 k R11 250 k (11 R10 4 Detector R12 Emitter + C5 100 µF Q1 (10) IR R13 Current 4 ...

Page 10

Table 4. Pin Description Pin No. Pin Name 4 STROBE This output provides a strobed, regulated voltage referenced to V ± 0.2%/°C maximum from - 10° to 60°C. The supply-voltage coefficient (line regulation) is ± 0.2%/V maximum from 6.0 ...

Page 11

To facilitate checking the sensitivity and calibrating smoke detectors, the MC145012 can be placed in a calibration mode. In this mode, certain device pins are controlled/ reconfigured as shown in Table 5. To place the part in the calibration mode, ...

Page 12

- 0.25 (0.010 STYLE 1: PIN 1. CATHODE 10. ANODE 11. ANODE 12. ANODE 13. ANODE 14. ANODE 15. ANODE 16. ANODE 0.25 ...

Page 13

REVISION DATE DESCRIPTION OF CHANGES • Implemented Revision History page 11/2006 9.0 • Updated to the current Freescale format and style • Removed Peak Package Reflow Temperature During Reflow (solder reflow) parameter from Maximum Ratings on page Sensors Freescale Semiconductor ...

Page 14

How to Reach Us: Home Page: www.freescale.com E-mail: support@freescale.com USA/Europe or Locations Not Listed: Freescale Semiconductor Technical Information Center, CH370 1300 N. Alma School Road Chandler, Arizona 85224 +1-800-521-6274 or +1-480-768-2130 support@freescale.com Europe, Middle East, and Africa: Freescale Halbleiter Deutschland ...

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