99773 HONEYWELL-ACC | Alldatasheet
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Technical content
DESCRIPTION
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 The HLC2701 detector is designed to sense speed and direction of mechanical motion. Applications include 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) pullup 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 centertocenter spacing of 0.009 in.(.203 mm), and outside edge to edge distance of 0.017 in.(.432 mm). DIM_030.cdr INFRA-74.TIF OUTLINE DIMENSIONS in inches (mm) 3 plc decimals ±0.005(0.12)Tolerance 2 plc decimals ±0.020(0.51) Honeywell reserves the right to make changes in order to improve design and supply the best products possible.h208
ELECTRICAL CHARACTERISTICS
UNITS TEST CONDITIONSMINPARAMETER SYMBOL TYP MAX 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 changes in order to improve design and supply the best products possible. h 209
SCH_045.cdr SWITCHING TIME TEST CIRCUIT cir_014.cdr SWITCHING WAVEFORM cir_011.cdr Responsivity vs Angular Displacement gra_066.ds4 Relative response - % 50% 60% 70% 80% 90% 100% -100 -80 -60 -20 0 20 60 80 100 Angular displacement - degrees -40 40 Fig. 1 Threshold Irradiance vs Temperature gra_060.ds4 Temperature - °C Relative irradiance 0.0 0.2 0.3 0.4 0.5 2.0 1.0 -40 -20 0 20 40 60 80 100 Fig. 2 Output Rise Time (t²) and Output Fall Time (t¶) vs Temperature gra_061.ds4 Temperature - °C Rise tim e (TR) & fall tim e (TF) - ns 100 120 140 160 180 220 240 -40 -20 0 20 40 60 80 100
200 Symbol definition & test
Fig. 3 Honeywell reserves the right to make changes in order to improve design and supply the best products possible.h210
gra_062.ds4 Ambient temperature - °C Propagation delay - µs 0.0 1.4 1.8 2.2 2.6 3.0 3.4 3.8 4.2 -40 -20 0 20 40 60 80 100 TPLH TPHL Fig. 4 Spectral Responsivity gra_050.ds4 Wavelength - nm Relative response 0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0 600 700 800 900 1000 1100 1200 Fig. 5 All Performance Curves Show Typical Values Honeywell reserves the right to make changes in order to improve design and supply the best products possible. h 211