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LSI/CSI
UL
(R)
LS6501LP
(631) 271-0400 FAX (631) 271-0405
July 2001
LSI Computer Systems, Inc. 1235 Walt Whitman Road, Melville, NY 11747
A3800
PIR MOTION DETECTOR
FEATURES: * Low Quiescent Current * Direct Interface with PIR Sensor * Two-Stage Differential Amplifier * Amplifier Gain and Bandwidth externally controlled * Window Comparator and Digital Filter limit Noise * Triac or Relay Output Drive * Programmable Output Duration Timer * Ambient Light Level Inhibit input * Selectable Dead Time * Single or Dual Pulse Detection * Timing derived from RC Oscillator or 50Hz/60Hz AC * Regulated 5V Output for PIR Sensor * Motion Detection LED Indicator * Triac can drive Incandescent or Fluorescent Lamps * LS6501LP (DIP), LS6501LP-S (SOIC-NB) LS6501LP-SW (SOIC-WB) - See Figure 1 APPLICATIONS: * Automatic Light Control * Intrusion Alarm DESCRIPTION: (See Figure 2) The LS6501LP is a monolithic, CMOS Silicon Gate integrated circuit, designed for detecting motion from a PIR Sensor and initiating appropriate responses. The detailed description of the functional blocks is as follows: DIFFERENTIAL AMPLIFIER Each stage of the two stage Differential Amplifier can be set to have its own amplification and bandwidth. The two inputs to the first stage allow for single ended or differential connection to PIR Sensors. This stage can be biased anywhere in its dynamic range. The second stage is internally biased so that the Window Comparator's lower and higher thresholds can be fixed relative to this bias. WINDOW COMPARATOR The Window Comparator provides noise filtering by enabling only those signals equal to or greater than a fixed threshold at the output of the Differential Amplifier to appear at the output of the Window Comparator. COMPARATOR DIGITAL FILTER The output of the Window Comparator is filtered so that motion must be present for a certain duration before it can be recognized and appear as pulses at the Digital Filter output.
6501LP-071201-1
PIN ASSIGNMENT - TOP VIEW
DIFF. AMP. 1 OUTPUT DIFF. AMP. 2 INPUT (-) DIFF. AMP. 2 OUTPUT OSCILLATOR INPUT AC INPUT V SS TRIAC/RELAY OUTPUT V DD 1 2 3 16 15 14
DIFF. AMP 1 INPUT (-) DIFF. AMP 1 INPUT (+) 5V REGULATOR OUTPUT TIMER CONTROL INPUT DEAD TIME SELECT INPUT INHIBIT INPUT PULSE MODE SELECT INPUT LED OUTPUT
LSI
LS6501LP
FIGURE 1
4 5 6 7 8
13 12 11 10 9
OUTPUT DURATION TIMER The voltage level at the TIMER CONTROL input can select 16 different timeouts for this Timer (See Table 1). The selection can be made by varying the setting of a potentiometer. The Timer is retriggerable and controls the ON duration of the TRIAC/RELAY output. The trigger for the Timer is generated from pulses appearing at the Digital Filter output. SINGLE PULSE/DUAL PULSE MODES A Single Pulse or Dual Pulse (two pulses occurring within a specified time period) at the Digital Filter output can be selected as the trigger for the Output Duration Timer. This selection is made by the logic level at the PULSE MODE SELECT input. Logic 0 = Single Pulse Mode, logic 1 = Dual Pulse Mode. LED OUTPUT This is an open drain output which is turned on by pulses generated by a retriggerable one-shot. The one-shot is triggered by the leading edge of pulses appearing at the Digital Filter output. When turned on, this output can sink current from a series Resistor-LED network returned to a positive voltage (V DD to 12.5V maximum). This results in the LED lighting whenever motion is detected.
INHIBIT The Output Duration Timer can be inhibited from triggering by the voltage level at the INHIBIT input. When this voltage level exceeds the Inhibit Threshold, the Timer will be prevented from triggering if it is OFF. If the Timer is ON, the INHIBIT input is blocked from affecting the Timer. There is approximately 10% hysteresis between the Inhibit and Enable thresholds at the INHIBIT input. The LED output is not affected by the INHIBIT input. An adjustable Ambient Light Level Inhibit can be implemented by connecting a Light Determining Resistor (LDR) network to the INHIBIT input (See Figures 3 and 4). DEAD TIME False turn-ons are prevented from occurring by establishing a Dead Time between the end of the timeout of the Output Duration Timer and the retriggering of that Timer. The state of the DEAD TIME SELECT input determines the Dead Time duration (See Table 2). OSCILLATOR For battery operation, an external RC is connected to the OSCILLATOR input to produce a 50Hz or 60Hz clock. A 30Hz clock can be used to extend timing durations (See Tables 1 and 2). DC POWER SUPPLY VDD-Vss is 8V1V. Typical quiescent current is 250A (TRIAC/RELAY, LED and REGULATOR outputs not loaded).
DC REGULATOR The LS6501LP includes a Regulator which provides a nominal +5V to the Differential Amplifier and Window Comparator and is available as an output to supply the PIR Sensor. TRIAC/RELAY OUTPUT This open drain output turns ON when the Output Duration Timer is triggered. The output drives a Triac when the OSCILLATOR input is tied to ground and 50/60Hz is applied to the AC input (See Figure 3). The output drives a Relay when the AC input is tied to ground and an RC network is connected to the OSCILLATOR input (See Figure 4). TRIAC DRIVE (See Figure 3) With the Output Duration Timer ON and a 2.7V P-P 60Hz signal applied to the AC input, the output produces a negative-going pulse in each half-cycle delayed a nominal 1.2ms from the zero crossing. There is no more than 150s difference between the zero-crossing delay of each pulse. RELAY DRIVE (See Figure 4) The output can sink current continously with the Output Duration Timer ON and the OSCILLATOR input active. This output can sink current from a relay coil returned to a positive voltage (VDD to 12.5V maximum).
TABLE 1 OUTPUT DURATION TIMER AS A FUNCTION OF TIMER CONTROL INPUT VOLTAGE (f = Frequency at AC input or OSCILLATOR input) INPUT VOLTAGE 0 1/16 VDD 2/16 VDD 3/16 VDD 4/16 VDD 5/16 VDD 6/16 VDD 7/16 VDD 8/16 VDD 9/16 VDD 10/16 VDD 11/16 VDD 12/16 VDD 13/16 VDD 14/16 VDD 15/16 VDD f = 30Hz 30 60 90 120 4 6 8 10 12 14 16 18 20 24 28 30 f = 50Hz 18 36 54 72 2.4 3.6 4.8 6 7.2 8.4 9.6 10.8 12 14.4 16.8 18 f = 60Hz 15 30 45 60 2 3 4 5 6 7 8 9 10 12 14 15 UNIT sec sec sec sec min min min min min min min min min min min min
TABLE 2 DEAD TIME DURATION AS A FUNCTION OF THE STATE OF DEAD TIME SELECT INPUT (f = Frequency at AC input or OSCILLATOR input) INPUT STATE 0 OPEN 1
6501LP070601-2
f = 30Hz 2 8 16
f = 50Hz 1.2 4.8 9.6
f = 60Hz 1 4 8
UNIT sec sec sec
ABSOLUTE MAXIMUM RATINGS: PARAMETER DC supply voltage Any input voltage Operating temperature Storage temperature SYMBOL VDD - VSS VIN TA TSTG VALUE +10 VSS - 0.3 to VDD + 0.3 -40 to +85 -65 to +150 UNIT V V C C
ELECTRICAL CHARACTERISTICS: ( All voltages referenced to VSS, TA = -40C to +55C, 7V VDD 9V, unless otherwise specified.) PARAMETER
SUPPLY CURRENT:
SYMBOL IDD IDD
MIN -
TYP 250 300
MAX 350 420
UNIT A A
CONDITIONS TRIAC/RELAY, LED and REGULATOR outputs not loaded -
VDD = 8V VDD = 7V - 9V REGULATOR:
Voltage Current DIFFERENTIAL AMPLIFIERS: Open Loop Gain, Each Stage
Common Mode Rejection Ratio Power Supply Rejection Ratio
VR IR
4.5
-
-
6 200
V A
Output Drive Current Input Sensitivity (Minimum Detectable Voltage to first amplifier when both amplifiers are cascaded for a net gain of 7,500) Input Dynamic Range Diff. Amp 2 Internal Reference COMPARATOR: Lower Reference Higher Reference
G CMRR PSRR ID VS
70 60 60
-
-
25 -
dB dB dB A V
TA = 25C, with Amplifier Bandpass configuration as shown in Figure 3
70
-
-
0 -
.4VR
2.5 -
V V
-
VIR
-
VTHL VTHH
-
VIR - .5V VIR + .5V
-
V V
-
DIGITAL FILTER: Input Pulse Width (for recognition) INHIBIT INPUT: Inhibit Threshold Enable Threshold OSCILLATOR: Resistor Capacitor Resistor Capacitor
TPW TPW
66.3 79.6
.5VDD .45VDD 2.2 .01 4.3 .01
-
ms ms
60Hz operation 50Hz operation
VTHI VTHE RO CO RO CO
-
-
V V M F M F
-
-
-
60Hz Oscillator Frequency 30Hz Oscillator Frequency
6501LP-070601-3
PARAMETER
OUTPUT DRIVE CURRENT: Triac (AC MODE) Relay (DC MODE) TRIAC OUTPUT TIMING: Pulse Width Delay from zero crossover Delay difference between zero crossovers AC INPUT IMPEDANCE LED OUTPUT: Sink Current Pulse Width DUAL PULSE MODE: Time between pulse-pairs for motion recognition
SYMBOL
MIN
TYP
MAX
UNIT
CONDITIONS
IO IO TTPW TOD TODD
-40 -10 20 1.00
-
30 1.2
-
45 1.32 150
mA mA s ms s
With 3V Triac Gate Drive With 1V Max. across the LS6501LP. VDD = 8V, f = 60Hz and 2.7V P-P AC input f = 60Hz
ZAC
270
-
-
k
-
ILS TLPW
.75
1
8 1.25
mA sec
VDD = 8V, Vo = .5V Max. f = 60Hz.
TR
-
-
5.125
sec
-
DIFF AMP 2 OUTPUT
3
14
5V REGULATOR OUTPUT
DIFF AMP 2 2 INPUT (-)
WINDOW COMPARATOR
VREG
COMP
VREG
5 VOLT REGULATOR
8
VDD
DIFF AMP 1 OUTPUT
1
6
VSS
DIFF AMP 1 16 INPUT (-) DIFF AMP 1 15 INPUT (+)
VREG
AMP +
VREG
+
AMP
VREG
+ -
VREG
COMP +
DIGITAL FILTER PULSE SELECT LOGIC
1 SECOND PULSE GEN
9
LED OUTPUT
10 PULSE MODE SELECT INPUT OUTPUT BUFFER 7 TRIAC/RELAY OUTPUT
TIMER CONTROL 13 INPUT
A/D CONVERTER
OUTPUT DURATION TIMER
CONTROL LOGIC
ZERO CROSS-OVER DETECT
5
AC INPUT
INHIBIT INPUT
11
INHIBIT COMPARATOR
OSCILLATOR
4
OSCILLATOR INPUT
DEAD TIME SELECT INPUT
12
DEAD TIME TIMER
FIGURE 2. LS6501LP BLOCK DIAGRAM
6501LP-070601-4
R3 C3 + - C2 R2 PIR SENSOR R6 AMP 2 OUT 5V REG OUT 14 R1 V DD R10 R9 C9 5 4 OSC 13 TIMER CONTROL 12 AC DEAD TIME SEL 11 INH V DD SPDT (On -On) S1 V DD V DD LED OUT 9 V DD R15 LED S1 = SPDT (On-Off-On) S1 R14 LDR + C1 V DD C6
1 + C4 R4 2 C5 R5 3
AMP 1 OUT
AMP 1 (-)IN AMP 1 (+)IN
16
AMP 2 (-)IN
15
R12
V DD
N
LOAD
R7 C7
D1
6
V SS
R13
MT2 MT1 AC MAINS
TI R11 G
Z1
+
C8 7
TRIAC OUT
PULSE MODE SEL
10
R8 8 P SW V DD
LS6501LP
C1 = 100F C2 = 33F C3 = .01F C4 = 33F C5 = .01F C6 = .1F C7 = .47F, 250V C7 = .33F, 400V
R1 = 36k R2 = 36k R3 = 2.7M R4 = 36k R5 = 2.7M R6 = 36k R7 = 270,1/2W R7 = 1k,1W *
*
R8 = 1k R9 = 910k R10 = 7.5k R10 = 3.6k R11 = 100 R12 = 1.0M R13 = 1.0M R14 = 910k R15 = 3.6k
*
C8 = 1000F C9 = .1F, 250V * C9 = .1F, 400V D1 = 1N4004 LDR = SILONEX HSL-19M52 (Typical) Z1 = 9.1V, 1/2W T1 = Q4008L4 (Typical) * T1 = Q5004L4 (Typical)
PIR = HEIMANN LHi 958 or 878 (Typical)
All Resistors 1/4W, all Capacitors 10V unless otherwise specified.
* = Component change for 220VAC
NOTES: 1. The R9, R10, C9 network provides a 2.7V Peak-to-Peak AC signal input to Pin 5. 2. The C8, D1, Z1, C7, R7 components generate the DC Supply Voltage for the LS6501LP. 3. The R2, C2, R3, C3, R4, C4, R5, C5, R6, C6 components and the two on-chip Differential Amplifiers set a nominal gain of 5,500 with bandpass filtering of .13Hz to 6Hz. FIGURE 3. TYPICAL TRIAC WALL SWITCH APPLICATION
6501LP-071201-5
R3 C3 + C2 R2 PIR SENSOR R6 AMP 2 OUT 5V REG OUT 14 R1 4 C8 RELAY POWER SUPPLY V DD OSC 13 + TIMER CONTROL C1 V DD V DD C6
1 + C4 R4 2 R5 3 V DD R15 SEE NOTE 2
AMP 1 OUT
AMP 1 (-)IN
16
AMP 2 (-)IN
AMP 1 (+)IN
15
C5
R12
5
AC
DEAD TIME SEL
12
S1
R14
LDR
6 D1 RELAY COIL Q2 V DD R7 REGULATOR 8 + RAW DC INPUT C7 R9 R10 Q1 R8 7
V SS
11 INH V DD SPDT (On - On)
R13
RELAY OUT
PULSE MODE SEL
10
S1 V DD
V DD
LED OUT
9 R11 LED
V DD
LS6501LP
S1 = SPDT (On - Off - On)
R1 = 36k R2 = 36k R3 = 2.7M R4 = 36k R5 = 2.7M R6 = 36k R7 = 10k
R8 = 3.6k R9 = 10k R10 = 18k R11 = 3.6k R12 = 1.0M R13 = 1.0M R14 = 910k R15 = 2.4M
C1 = 100F C2 = 33F C3 = .01F C4 = 33F C5 = .01F C6 = .1F C7 = 100F
C8 = .01F LDR = SILONEX NSL-19M52 (Typical) Q1 = 2N3904 Q2 = 2N3906 REGULATOR = MC78L08 (Typical) RELAY = No typical P/N
PIR = HEIMANN LHi 958 or 878 (Typical) All Resistors 1/4W, all Capacitors 10V NOTES: 1. The "Raw DC Voltage" into the Regulator can range between 11V and 25V and generates an 8V DC Supply Voltage for the LS6501LP. 2. The R10, R9, Q2, R8, R7, Q1 components interface LS6501LP Pin 7 to a Relay Coil returned to a separate High-Voltage DC Supply. 3. A Relay Coil returned to a maximum of 12.5V can be directly driven by the LS6501LP Pin 7.
FIGURE 4. TYPICAL DC RELAY APPLICATION
6501-070501-6
R2 C2
1 + C3 R3
AMP 1 OUT
AMP 1 (-)IN
16
R5
+
C5 C8
PIR SENSOR 1 R7
2 AMP 2 (-)IN C4 R4 3 AMP 2 OUT
AMP 1 (+)IN
15
R6
+
C6 R8 C9
PIR SENSOR 2
R10
R9
C7
5V REG OUT
14 R1 + C1
LS6501LP
R1 = 36k R2 = 2.7M R3 = 36k R4 = 2.7M R5 = 36k R6 = 36k R7 = 36k R8 = 36k R9 = 5.6M R10 = 5.6M
C1 = 100F C2 = .01F C3 = 33F C4 = .01F C5 = 33F C6 = 33F C7 = .01F C8 = .1F C9 = .1F PIRs = HEIMANN LHi 958 or 878 (Typical)
All Resistors 1/4 W. All Capacitors 10V NOTE: A pair of PIR Sensors may be used in applications where a wider optical field of view is needed. FIGURE 5. LS6501LP DIFFERENTIAL INTERFACE TO PIR SENSOR PAIR
The information included herein is believed to be accurate and reliable. However, LSI Computer Systems, Inc. assumes no responsibilities for inaccuracies, nor for any infringements of patent rights of others which may result from its use.
6501-070202-7
12 VOLT INPUT 8.2V
V DD
V DD LS6501LP RELAY COIL S1 ON Q 8 OFF AUTO 6 7 RELAY OUT V DD
S1 = SP3T (On - On - On) FIGURE 6. LOW VOLTAGE INDUSTRIAL CONTROL
For industrial applications a 12 Volt DC power supply can be used to power one or several low voltage PIR modules for many types of motion detection requirements. The low voltage, low current switch S1 provides ON/OFF/AUTO control of the Relay Coil.
R9 R7 N SPDT (On - Off - On) ON OFF AUTO
MT2 MT1 G V DD
T1
R11
P
FIGURE 3
FIGURE 7. AIR-GAP SWITCH CONTROL
The application as shown in Figure 3 can be modified with the addition of a single pole, three position switch which provides for ON/OFF/AUTO control and also for the air-gap safety switch required by UL.
6501LP-070501-8

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