View RE46C160_1301043.PDF datasheet online --- IC-ON-LINE

Datasheet File OCR Text:

R&E International
RE46C160
CMOS Alarm ASIC Preliminary Product Specification
General Description
The RE46C160 is a low power CMOS general purpose alarm detector IC which provides an interface to a piezoelectric horn and LED for signaling and notification. With a few external components this IC can provide many features for a variety of alarm applications. In addition low standby current makes this circuit ideal in battery powered applications. Typical applications include personal, home and auto anti-theft type alarms and liquid level or temperature sensing alarms. An internal oscillator strobes power to the detection circuitry for 10.5mS every 1.66 seconds to keep standby current to a minimum. A check for a low battery condition is performed every 40 seconds when in standby.
Features
* * * * * * * * Guard Outputs for Detect Input Low leakage MOSFET input comparator Internal Reverse Battery Protection Internal Low Battery Detection Low Quiescent Current Consumption (<6uA) Available in 16L PDIP or 16L N SOIC ESD Protection on all Pins Compatible with MC14600
Pin Configuration
DETCOMP N/C LBADJ LBCOMP LED VDD RBIAS FEED
1 2 3 4 5 6 7 8
16 15 14 13 12 11 10 9
GUARD2 ALARM GUARD1 VSEN OSCAP HS HB VSS
ABSOLUTE MAXIMUM RATINGS
PARAMETER Supply Voltage Input Voltage Range Except FEED FEED Input Voltage Range Reverse Battery Time Input Current except FEED Operating Temperature Storage Temperature Maximum Junction Temperature SYMBOL VDD Vin Vinfd TRB Iin TA TSTG TJ VALUE 15 -.3 to Vdd +.3 -10 to +22 5 10 -40 to 85 -55 to 125 150 UNITS V V V S mA C C C
Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. These are stress ratings only and operation at these conditions for extended periods may affect device reliability. This product utilizes CMOS technology with static protection; however proper ESD prevention procedures should be used when handling this product. Damage can occur when exposed to extremely high static electrical charge
Telephone 610.992.0727 Page 1 of 7
E-mail: rande@randeint.com DS-RE46C160-070904 This datasheet contains PROPRIETARY and CONFIDENTIAL information.
Facsimile 610.992.0734
RE46C160
CMOS Alarm ASIC Preliminary Product Specification R&E International
DC Electrical Characteristics at TA = 25C, VDD=9V, VSS=0V (unless otherwise noted) Test Pin
6 6 6 8 8 15 8 15 8 5 10,11 1,4 10,11 1,4 5 6 3 14,15 15,16 13,15 14,15 13,15 6,8
Guard Amplifier Guard Amplifier Alarm Comparator Guard Amplifier, Note 2 Alarm Comparator, Note 2 Guard Amplifier Outputs, Note 2
Parameter
Supply Voltage Supply Current
Symbol
VDD IDD1 IDD2 VIH VIL ILDET1 ILFD IHDET1 IHFD IOHZ VOH1 VOH2 VOL1 VOL2 VOL3
Test Conditions
Operating RBIAS=8.2M, OSCAP=.1uF RBIAS=8.2M, OSCAP=.1uF;Vdd=12V
Min
6
Limits Typ Max
12 4.5 6 9
Units
V uA uA V V nA uA nA uA uA V V
Input Voltage High Input Voltage Low Input Leakage Low
FEED input FEED input
VDD=9V, ALARM=VSS FEED=-10V VDD=9V, DETECT=VDD, 0-40% RH FEED=22V LED Off IOH=-16mA, VDD=7.2V IOH=-30ua IOL=16mA, VDD=7.2V IOL=30ua IOL=10mA, VDD=7.2V TA=-10 to 60C, Note 3
6.2 2.7 -100 -50 100 50 1 6.3 8.5 .9 .5 3 7.2 -50 -50 -50 2 .5 10 7.5 65.5 50 50 50 VDD-.5 VDD-2 7.8
Input Leakage High
Output Off Leakage High Output Voltage High
Output Voltage Low
V V V V %VDD mV mV mV V V k
Low Battery Voltage Internal Sensitivity Set Voltage Offset Voltage
VLB VSET2 VGOS1 VGOS2 VGOS3
Common Mode Voltage
VCM1 VCM2 ZOUT
Output Impedance
Note 2: Not 100% production tested Note 3: Production test at room with temperature guardbanded limits.
Telephone 610.992.0727 Page 2 of 7
E-mail: rande@randeint.com DS-RE46C160-070904 This datasheet contains PROPRIETARY and CONFIDENTIAL information.
Facsimile 610.992.0734
RE46C160
CMOS Alarm ASIC Preliminary Product Specification R&E International
AC Electrical Characteristics at TA = 25C, VDD=9V, OSCAP=.1uF, RBIAS=8.2M, VSS=0V (unless otherwise noted) Test Pin
12 12 5 5 5 5 10,11 10,11 10,11 10,11
Parameter
Oscillator Period
Symbol
TPER1 TPER2 TPW TLON TLOF1 TLOF2 THON1 THON2 THOF1 THOF3
Test Conditions
No Alarm Condition Alarm Condition Operating Operating Standby, No Alarm Alarm Condition Operating, Alarm Condition Low Battery, No Alarm Operating, Alarm Condition Low Battery, No Alarm
Min
1.34 37.5 9.1 9.1 32 .9 141 9.1 71 32
Limits Typ Max
1.67 41.5 10.5 10.5 40 1 166 10.5 83 40 2 45.8 12.5 12.5 48 1.1 190 12.5 95 48
Units
S mS mS mS S S mS mS mS S
Oscillator Pulse Width LED On Time LED Off Time
Horn On Time
Horn Off Time
Functional Block Diagram
Figure 1
Telephone 610.992.0727 Page 3 of 7
E-mail: rande@randeint.com DS-RE46C160-070904 This datasheet contains PROPRIETARY and CONFIDENTIAL information.
Facsimile 610.992.0734
RE46C160
CMOS Alarm ASIC Preliminary Product Specification R&E International
DEVICE DESCRIPTION and APPLICATION NOTES
Note: All timing references are nominal values. Refer to the electrical specifications for limits Internal Timing - With external components as indicated on the application drawing the period of the oscillator is 1.67 seconds in standby. Every 1.66 seconds the detection circuitry is powered up for 10.5mS and the status of the detect comparator is latched. In addition every 40 seconds the LED driver is turned on for 10.5mS and the status of the low battery comparator is latched. The detect comparator status is not checked during the low battery test, during the low battery horn warning chirp, or when the horn is on due to an alarm condition. If an alarm condition is detected the oscillator period increases to 41.5mS. Due to the low currents used in the oscillator the capacitor on pin 12 should be a low leakage type. Oscillator accuracy will depend mainly on the tolerance of the RBIAS resistor and OSCAP capacitor. Alarm Circuit - The alarm comparator compares the alarm voltage to a voltage derived from a resistor divider across VDD. . This divider voltage must be provided externally on pin 13 (VSEN). See the application drawing (FIG 2). In an alarm condition the horn is turned on for 167mS and turned off for 87ms. The guard amplifier and outputs are always active and will be within 50mV of the DETECT input. The guard outputs also allow for measurement of the DETECT input without loading the sensing element. Low Battery Detection - An internal reference is compared to the voltage divided VDD supply. The battery can be checked under load via the LED low side driver output since low battery status is latched at the end of the 10mS LED pulse. Pin 3 (LBADJ) can be used to modify the low battery set point by placing a resistor to VDD or VSS. LED Pulse - The LED is pulsed on for 10.5mS every 40S in standby. In alarm the LED is pulsed on for 10.5mS every 1S. Testing - By holding pin 12 (OSCAP) low the internal power strobe is active and pins 1 (DETCOMP) and 4 (LBCOMP) can be used to check for alarm and low battery respectively. Please refer to the timing diagrams.
Telephone 610.992.0727 Page 4 of 7
E-mail: rande@randeint.com DS-RE46C160-070904 This datasheet contains PROPRIETARY and CONFIDENTIAL information.
Facsimile 610.992.0734
RE46C160
CMOS Alarm ASIC Preliminary Product Specification R&E International
Typical Application
Figure 2
Notes: 1) C2 should be located as close as possible to the device power pins. 2) The value of R2 should be selected to maintain proper battery loading during the low battery test.
Telephone 610.992.0727 Page 5 of 7
E-mail: rande@randeint.com DS-RE46C160-070904 This datasheet contains PROPRIETARY and CONFIDENTIAL information.
Facsimile 610.992.0734
RE46C160
CMOS Alarm ASIC Preliminary Product Specification R&E International
Timing Diagram
Standby Mode; No Low Battery; No Alarm
Alarm No Low Battery ;
Alarm Low Battery ;
No Alarm Low Battery ;
Oscillator
Pin 15 < Pin 13 Pin 13 < Pin 15 Pin 15 < Pin 13
1.67S
10m S
Internal Clock
24 Clock Cycles (40 S) 24 Clock Cycles (1S)
LED
DETCOMP (pin1) Alarm Sample
Low Battery Warning Chirp
Horn (2/3 Duty Cycle)
Notes: 1. Smoke is not sampled when the horn is active so the horn cycle is self completing 2. Low battery warning chirp is suppressed in alarm
Telephone 610.992.0727 Page 6 of 7
E-mail: rande@randeint.com DS-RE46C160-070904 This datasheet contains PROPRIETARY and CONFIDENTIAL information.
Facsimile 610.992.0734
RE46C160
CMOS Alarm ASIC Preliminary Product Specification R&E International
R&E INTERNATIONAL, Inc. reserves the right to make changes without further notice to any products herein to improve reliability, function or design. R&E INTERNATIONAL, Inc. does not assume any liability arising out of the application or use of any product or circuit described herein; neither does it convey any license under its patent rights, nor the rights of others. R&E INTERNATIONAL, Inc. products are not authorized for use as critical components in life support devices or systems without the express written approval of the President of R&E INTERNATIONAL, Inc. Life support devices or systems are devices or systems which are intended for surgical implant into the body to support or sustain life, and whose failure to perform, when properly used in accordance with instructions for use provided in the labeling, can be reasonably expected to result in a significant injury to the user. A critical component is any component of a life support device or system whose failure to perform can be reasonably expected to cause the failure of the life support device or system, or to affect its safety or effectiveness.
Telephone 610.992.0727 Page 7 of 7
E-mail: rande@randeint.com DS-RE46C160-070904 This datasheet contains PROPRIETARY and CONFIDENTIAL information.
Facsimile 610.992.0734

▲Up To Search▲

Price & Availability of RE46C160

	To Download RE46C160 Datasheet File
If you can't view the Datasheet, Please click here to try to view without PDF Reader .