LSI/CSI UL ® LS6505 LSI Computer Systems, Inc. 1235 Walt Whitman Road, Melville, NY 11747 (631) 271-0400 FAX (631) 271-0405 A3800 PIR SENSOR INTERFACE PIN ASSIGNMENT - TOP VIEW DIFF. AMP. 1 OUTPUT 1 DIFF. AMP. 2 INPUT (-) DIFF. AMP. 2 OUTPUT 16 DIFF. AMP 1 INPUT (-) 2 15 DIFF. AMP 1 INPUT (+) 3 14 WARNING OUTPUT 13 TIMER CONTROL INPUT 12 DEAD TIME SELECT INPUT 6 11 OPERATION SELECT INPUT 7 10 PULSE MODE SELECT INPUT V DD 8 9 AC INPUT V SS 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. SINGLE PULSE / DUAL PULSE MODES The logic level at the Pulse Mode Select input selects Single Pulse (SP) or Dual Pulse (DP) mode. The trigger for the Output Duration Timer is generated by requiring one (SP Mode) or two (DP Mode) pulses to be present at the Digital Filter output within a specified time period. SP Mode = 0; DP Mode = 1 OUTPUT DURATION TIMER (See Table 1 and Figure 3) The timeout is selected by the voltage level at the Timer Control input. The Timer’s trigger is generated from pulses at the Digital filter output. In Auto operation, the Timer controls the On duration of the Triac output and is retriggerable. DEAD TIME (See Table 2) 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. 6505-110602-1 TRIAC OUTPUT 4 5 LS6505 MODE SELECT INPUT APPLICATIONS: Wall and ceiling mounted occupancy sensors providing energy savings and convenience. DESCRIPTION (See Figure 2) The LS6505 is a CMOS integrated circuit, designed for detecting motion from a PIR Sensor and initiating appropriate responses. November 2002 LSI FEATURES: • Direct Interface with PIR Sensor • Two-Stage Differential Amplifier • Amplifier Gain and Bandwidth externally controlled • Window Comparator and Digital Filter limit Noise • Triac Output Drive • Programmable Output Duration Timer • Selectable Dead Time • Single or Dual Pulse Detection • Timing derived from 50Hz/60Hz AC • Motion Detection LED Indicator • LS6505 (DIP), LS6505-S (SOIC)- See Figure 1 LED OUTPUT FIGURE 1 TRIAC OUTPUT This open drain output turns On when the Output Duration Timer is triggered. The output drives a Triac gate. With the Output Duration Timer On and a 2.7V P-P 60Hz signal applied to the AC input, this output produces a negative going pulse in each half-cycle delayed a nominal 1.2ms from the zero crossing. There is no more than 150us difference between the zerocrossing delay of each pulse. WARNING OUTPUT This output goes high for 2 sec beginning 7.5 sec before the Triac output turns off. This signal can be used to trigger an audible or visual alert. LED OUTPUT (See Figure 3) Normally, the status of the LED output is opposite to the Triac output, but in Auto operation the LED output flashes on for one second whenever motion is detected. MODE SELECT Open = Mode A, Vss = Mode B, VDD = Mode C OPERATION SELECT (See Figure 3, S1) The 3-state Operation Select input determines the operation of LS6505 in accordance with the selected Mode as shown below: Input VDD Open Vss Mode A On Auto Off Mode B (1) Prior Condition (2) Mode C (3) Auto (4) (1) Momentary application of VDD turns on the Triac output and starts Auto operation. After the Triac output is off for 15 seconds, Auto operation terminates. (2) Momentary application of Vss turns off the Triac output. (3) Same as (1) except that Auto operation does not terminate. (4) Same as (2) except that after the Triac output is off for 8 seconds, Auto operation begins. ABSOLUTE MAXIMUM RATINGS: PARAMETER DC supply voltage Any input voltage Operating temperature Storage temperature SYMBOL VDD - VSS VIN TA TSTG VALUE +5.5 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 = -40˚C to +55˚C, 4.5V ≤ VDD ≤ 5.5V, unless otherwise specified.) PARAMETER SUPPLY CURRENT: VDD = 5V VDD = 4.5V - 5.5V MIN TYP MAX UNIT IDD IDD - 150 180 200 240 µA µA Triac and LED outputs not loaded G CMRR PSRR ID 70 60 60 - - 25 dB dB dB µA - VS 100 - - µV TA = 25˚C, with Amplifier Bandpass configuration as shown in Figure 3 - 0 - 2.5 V - VIR - 0.4VR - V - COMPARATOR: Lower Reference Higher Reference VTHL VTHH - VIR - 0.5V VIR + 0.5V - V V - DIGITAL FILTER: Input Pulse Width (for recognition) TPW TPW 66.3 79.6 - - ms ms 60Hz operation 50Hz operation OUTPUT DRIVE CURRENT: Triac Warning: Source Current Sink Current IO Iw + Iw - -40 2 1 - - mA mA mA With 3V Triac Gate Vo =VDD - 0.5V Vo = 0.3V Max TRIAC OUTPUT TIMING: Pulse Width Delay from zero crossover TTPW TOD 20 1.00 30 1.2 45 1.32 µs ms VDD = 5V, f = 60Hz and 2.7V P-P AC input Delay difference between zero crossovers TODD - - 150 µs f = 60Hz AC INPUT IMPEDANCE ZAC 270 - - LED OUTPUT: Source Current Sink Current IS+ IS- Pulse Width TLPW DUAL PULSE MODE: Time between pulse-pairs for motion recognition TR DIFFERENTIAL AMPLIFIERS: Open Loop Gain, Each Stage Common Mode Rejection Ratio Power Supply Rejection Ratio Output Drive Current Input Sensitivity (Minimum Detectable Voltage to first amplifier when both amplifiers are cascaded for a net gain of 5,000) Input Dynamic Range Diff. Amp 2 Internal Reference 6505-110102-2 SYMBOL CONDITIONS kΩ - 2 1 - - mA mA Vo = VDD - 0.5V Vo = 0.3V 0.75 1 1.25 sec f = 60Hz 5.125 sec f = 60Hz - - TABLE 1 OUTPUT DURATION TIMER AS A FUNCTION OF TIMER CONTROL INPUT VOLTAGE (f = Frequency at AC input) INPUT VOLTAGE 0 1/16 VDD 2/16 VDD 3/16VDD 4/16 VDD 5/16 VDD 6/16 VDD 7/16 VDD 8/16 VDD 9/16 VDD 10/16 VDD 11/16VDD 12/16 VDD 13/16 VDD 14/16 VDD 15/16 VDD 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 TABLE 2 DEAD TIME DURATION AS A FUNCTION OF THE STATE OF DEAD TIME SELECT INPUT (f = Frequency at AC input) INPUT STATE 0 OPEN 1 UNIT sec sec sec sec min min min min min min min min min min min min f = 50Hz 0 1.2 2.4 f = 60Hz 0 1 2 UNIT sec sec sec 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. FIGURE 2. LS6505 BLOCK DIAGRAM DIFF AMP 2 3 OUTPUT DIFF AMP 2 2 INPUT (-) DIFF AMP 1 OUTPUT WINDOW COMPARATOR (+V) (-V) 1 8 VDD 6 VSS COMP DIFF AMP 1 INPUT (-) + 16 - AMP DIFF AMP 1 15 INPUT (+) + DIGITAL FILTER AMP +V + 1 SECOND PULSE GEN 9 LED OUTPUT COMP + PULSE MODE 10 SELECT INPUT PULSE SELECT LOGIC OUTPUT BUFFER TIMER CONTROL 13 INPUT A/D CONVERTER OUTPUT DURATION TIMER CONTROL LOGIC OPERATION SELECT INPUT 11 MODE SELECT INPUT DEAD TIME SELECT INPUT 12 6505-110102-3 7 TRIAC OUTPUT ZERO CROSS-OVER DETECT 5 AC INPUT 14 4 DEAD TIME TIMER WARNING OUTPUT FIGURE 3. TYPICAL WALL SWITCH OCCUPANCY SENSOR APPLICATION R2 C2 1 AMP 1 OUT AMP 1 (-)IN 2 AMP 2 (-)IN AMP 1 (+)IN C3 + R3 C4 R8 4 SEE NOTE C8 5 AMP 2 OUT LOAD R6 C6 D1 DEAD TIME SEL 12 AC MT1 AC MAINS + R10 SPDT (On - Off - On) OPERATION SEL S1 P U1 OUT V DC V DD 10 SPDT (On - On) R7 IN OFF S1 (MODE B, MODE C) PULSE MODE SEL 7 TRIAC OUT C11 SW AUTO V DD C7 G V DD 11 Z1 S1 (MODE A) V DD S1 = SPDT (On - Off - On) 6 TI V DD ON 13 V SS MT2 C5 14 WARNING MODE TIMER S E L E C T CONTROL V SS N PIR SENSOR 15 R5 3 R9 R1 R4 V DD NOTE: Open for Mode A Vss for Mode B V DD for Mode C + C1 - 16 R12 V DD Q1 S1 = SPDT (Mom - Off - Mom) LED 8 V DD R11 9 LED OUT LS6505 V DC V DD R1 = 36kΩ R2 = 2.7MΩ R3 = 36kΩ R4 = 2.7MΩ R5 = 36kΩ R6 = 240Ω,1/2W * R6 = 1kΩ,1W * R7 = 1kΩ R8 = 910kΩ R9 = 7.5kΩ R9 = 3.6kΩ R10 = 1.0MΩ (variable) R11= 51kΩ R12 = 10kΩ C9 C10 * All Resistors 1/4W, all Capacitors 10V unless otherwise specified. PIR = HEIMANN LHi 958 or 878 (Typical) * * C1 = 33µF C9 = 33µF C2 = 0.01µF C10 = 0.1µF C3 = 33µF C11 = 0.033µF C4 = 0.01µF D1 = 1N4004 C5 = 0.1µF Z1 = 24V, 1/2W C6 = 1.5µF, 250V T1 = Q4008L4 (Typical) C6 = 1.0µF, 400V = Q5004L4 (Typical) * T1 C7 = 1000µF U1 = LM78L05 or equivalent C8 = 0.1µF, 250V (5V Regulator) C8 = 0.1µF, 400V Q1 = MPS8099 = Component change for 220VAC NOTES: 1. The R8, R9, C8 network provides a 2.7V Peak-to-Peak AC signal input to Pin 5. 2. The C7, D1, Z1, C6, R6 components generate the DC Supply Voltage for the LS6505. 3. The R1, C1, R2, C2, R3, C3, R4, C4, R5, C5 components and the two on-chip Differential Amplifiers set a nominal gain of 5,500 with bandpass filtering of 0.13Hz to 6Hz. FIGURE 4. ADAPTING WALL SWITCH FOR 3-WAY OPERATION Occupancy Sensor Module Remote Switch Module AC Hot AC Hot To P S To Load from MT2 Remote Control S = SPST (Mom-Off) R to LS6505-11 C Vss 6505-110602-4 R = 510k , 1 / 4 W C = 0.01µF, 10V When operated in Mode B or Mode C, the wall switch occupancy sensor shown in Figure 3 can easily be adapted to operate with a remote switch by adding an R-C network to the occupancy sensor module. R limits the current from the remote module into Pin 11 of the LS6505 and C suppresses noise.