RE46C120

CMOS Ionization Smoke Detector ASIC

R&E International

Product Specification

A Subsidiary of Microchip Technology Inc.

© 2009 Microchip Technology Inc.

DS22157A-page 2

DC Electrical Characteristics at TA = 25°C, VDD=9V, VSS=0V (unless otherwise noted)

Limits

Parameter

Symbol

Test

Pin

Test Conditions

Min

Typ

Max

Units

Supply Voltage

6

Operating

6

12

V

6

RBIAS=8.2MΩ, OSCAP=.1uF

4.5

6.5

uA

Supply Current

6

RBIAS=8.2MΩ, OSCAP=.1uF;Vdd=12V

9

uA

Input Voltage High

4,8

6.2

4.5

V

Input Voltage Low

4,8

4.5

2.7

V

15

VDD=9V, DETECT=VSS, 0-40% RH

-0.75

pA

15

VDD=9V, DETECT=VSS, 85% RH

Note 1

-1.50

pA

4

TONE=VSS, RBIAS=8.2MΩ,

-100

-450

nA

Input Leakage Low

8

FEED=-10V

-50

uA

15

VDD=9V, DETECT=VDD, 0-40% RH

0.75

pA

15

VDD=9V, DETECT=VDD, 85% RH

Note 1

1.50

pA

Input Leakage High

8

FEED=22V

50

uA

Output Off Leakage High

5

LED Off

1

uA

10,11

IOH=-16mA, VDD=7.2V

6.3

V

Output Voltage High

1

IOH=-30ua

8.5

V

10,11

IOL=16mA, VDD=7.2V

.9

V

1

IOL=30ua

.5

V

Output Voltage Low

5

IOL=10mA, VDD=7.2V

3

V

Low Battery Voltage

6

7.2

7.5

7.8

V

13

47

50

53

Internal Sensitivity Set Voltage

3

65.5

14,15

Guard Amplifier

-50

50

mV

15,16

Guard Amplifier

-50

50

mV

Offset Voltage

13,15

Smoke Comparator

-50

50

mV

14,15

Guard Amplifier, Note 2

2

V

Common Mode Voltage

13,15

Smoke Comparator, Note 2

.5

V

Output Impedance

14,16

Guard Amplifier Outputs, Note 2

10

k

Ω

Hysteresis

13

No Alarm to Alarm Condition

90

130

170

mV

Note 1: Sample test only

Note 2: Not 100% production tested

Note 3: Production test at room with temperature guardbanded limits.