HLC2701 Encoder Detector FEATURES • Side-looking plastic package • TTL/LSTTL/CMOS compatible • Inverting logic output • Linear or rotary encoder applications • Resolution to 0.009 in.(.229 mm) • Sensitivity versus temperature compensation • Mechanically and spectrally matched to SEP8506 and SEP8706 infrared emitting diodes INFRA-74.TIF DESCRIPTION OUTLINE DIMENSIONSin inches (mm) The HLC2701 detector is designed to sense speed and Tolerance 3 plc decimals ±0.005(0.12) direction of mechanical motion. Applications include 2 plc decimals ±0.020(0.51) rotary and linear encoders; the device is especially well suited for the encoding function in an optical mouse. The detector is a monolithic IC, consisting of two narrow adjacent photodiodes, amplifiers, and Schmitt trigger output stages. The outputs are NPN collectors with internal 10 kì (nominal) pull up resistors to VÙÙ which can directly drive TTL loads. It incorporates circuitry to compensate the sensitivity for the output power versus temperature characteristics of an IRED. The IC is encapsulated in a molded, unlensed black plastic package which is transmissive to IR energy, yet provides shielding from visible light. In a typical application, the HLC2701 is used in conjunction with an IRED and an encoder disk or linear encoder strip attached to an element for which speed and direction of movement is to be sensed. As the interruptive pattern moves, the sensor provides two phase shifted output signals (active low) which can be processed to provide the speed and direction information. The sensing areas of the IC are each 0.008 in.(.203 mm) in width and in .015in.(.381 mm) in height with a 0.001 in.(.0254 mm) separation, for center to center DIM_030.cdr spacing of 0.009 in.(.203 mm), and outside edge to edge distance of 0.017 in.(.432 mm). h Honeywell reserves the right to make 208 changes in order to improve design and supply the best products possible.

HLC2701 Encoder Detector ELECTRICAL CHARACTERISTICS PARAMETER SYMBOL MIN TYP MAX UNITS TEST CONDITIONS ABSOLUTE MAXIMUM RATINGS (25¡C Free-Air Temperature unless otherwise noted) Duration of Output Short to VÙÙ or Ground 1.0 sec. Operating Temperature Range -40¡C to 85¡C Storage Temperature Range -40¡C to 85¡C Soldering Temperature (5 sec) 240¡C Honeywell reserves the right to make h changes in order to improve design and 209 supply the best products possible.

HLC2701 Encoder Detector FUNCTIONAL BLOCK DIAGRAM SWITCHING TIME TEST CIRCUIT SCH_045.cdr cir_014.cdr SWITCHING WAVEFORM Fig. 1 Responsivity vs cir_011.cdr Angular Displacement gra_066.ds4 100% % - e 90% s n o 80% p se re 70% v ita le 60% R 50% -100 -80 -60 -40 -20 0 20 40 60 80 100 Angular displacement - degrees Fig. 2 Threshold Irradiance vs Temperature Fig. 3 Output Rise Time (t²) and Output Fall gra_060.ds4 Time (t¶) vs Temperature gra_061.ds4 240 lti ii rrvceaeadaneR 00021.....34500 fll ti ()(eaeT&Tm)FR -sn 1111122024682068000000000 SRyismecbi rtocimul diet e pTfeiRnri tfiiognu r e&s test 0.2 tiem 2400 Fall time TF 0.0 -40 -20 0 20 40 60 80 100 isR -40 -20 0 20 40 60 80 100 Temperature - °C Temperature - °C h Honeywell reserves the right to make 210 changes in order to improve design and supply the best products possible.

HLC2701 Encoder Detector Fig. 4 Delay Time vs Temperature Fig. 5 Spectral Responsivity gra_062.ds4 gra_050.ds4 4.2 1.0 s 3.8 0.9 -yaµ 3.4 TPLH sone 00..78 londe 23..60 rseep 00..56 tiaga 2.2 litvea 00..34 ropP 11..48 TPHL R 00..12 0.0 0.0 600 700 800 900 1000 1100 1200 -40 -20 0 20 40 60 80 100 Wavelength - nm Ambient temperature - °C All Performance Curves Show Typical Values Honeywell reserves the right to make h changes in order to improve design and 211 supply the best products possible.