Document
HOA7720/7730
Connectorized Transmissive Optoschmitt Sensor
FEATURES • Direct TTL interface • No interface circuits required • Inverting logic • Two device output options • High resolution • 0.118 in.(3.00 mm) slot width
DESCRIPTION The HOA7720/7730 Series consists of an infrared emitting diode facing an Optoschmitt detector encased in a black thermoplastic housing. The photodetector consists of a photodiode, amplifier, voltage regulator and Schmitt trigger with two output configurations. The user can choose from available options of totem pole (HOA7720-M22) or open collector (HOA7730-M22) output. The totem pole output is well suited for applications which require fast transition times. The open collector allows the output of the sensor to interface with circuit elements driven by supply voltages other than Vcc supply. The inverting logic provides a high output when the optical path is interrupted, and a low output when the path is clear. The infrared emitting diode is biased internally eliminating the need for any external circuitry. Interconnection is simplified through the use of an integral Molex three pin connector.
Both emitter and detector have a 0.020 in.(.508 mm) x 0.070 in.(1.78 mm) vertical aperture. The narrow aperture is ideal for use in applications in which maximum rejection of ambient light is important, and maximum position resolution is desired. The HOA7720/7730 series employ plastic molded components. For additional component information see SEP8506, SDP8014 and SDP8314.
Housing material is opaque polycarbonate. Housings are soluble in chlorinated hydrocarbons and ketones. Recommended cleaning agents are methanol and isopropanol.
INFRA-85.TIF
OUTLINE DIMENSIONS in inches (mm) Tolerance 3 plc decimals ±0.010(0.25)
2 plc decimals ±0.020(0.51)
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Honeywell reserves the right to make changes in order to improve design and supply the best products possible.
HOA7720-M22
Connectorized Transmissive Optoschmitt Sensor
Totem-Pole Output
ELECTRICAL CHARACTERISTICS PARAMETER
SYMBOL MIN TYP MAX UNITS
TEST CONDITIONS
ABSOLUTE MAXIMUM RATINGS
(25¡C Free-Air Temperature unless otherwise noted)
Operating Temperature Range
-40¡C to 70¡C
Storage Temperature Range
-40¡C to 85¡C
Power Dissipation
220 mW
Supply Voltage
5.5 V
Supply Current
40 mA
Low Level Output Current
12.8 mA
Duration of Output
Short to VÙÙ or Ground
1.0 sec
Honeywell reserves the right to make changes in order to improve design and supply the best products possible.
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389
HOA7730-M22
Connectorized Transmissive Optoschmitt Sensor
Open-Collector Output
ELECTRICAL CHARACTERISTICS PARAMETER
SYMBOL MIN TYP MAX UNITS
TEST CONDITIONS
ABSOLUTE MAXIMUM RATINGS
(25¡C Free-Air Temperature unless otherwise noted)
Operating Temperature Range
-40¡C to 70¡C
Storage Temperature Range
-40¡C to 85¡C
Power Dissipation
220 mW
Supply Voltage
5.5 V
Supply Current
40 mA
Low Level Output Current
12.8 mA
Duration of Output
Short to VÙÙ or Ground
1.0 sec.
Applied Output Voltage
35 V
390
h
Honeywell reserves the right to make changes in order to improve design and supply the best products possible.
HOA7720/7730
Connectorized Transmissive Optoschmitt Sensor
SCHEMATICS FOR HOA7720/7730
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sch_041.cdr
Propagation delay - µs Rise time (TR) & fall time (TF) - ns
SWITCHING WAVEFORM FOR INVERTERS
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Fig. 2 Delay Time vs Temperature
4.2 3.8 3.4 TPLH 3.0 2.6 2.2 1.8 TPHL 1.4 0.0
-40 -20 0 20 40 60 80 100 Ambient temperature - °C
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All Performance Curves Show Typical Values
Fig. 1 Output Rise Time (t²) and Output Fall
Time (t¶) vs Temperature
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240
220 Symbol definition & test 200 180 circuit per figures
160
140
120
100 80 Rise time TR
60
40 20
Fall time TF
-40 -20 0 20 40 60 80 100 Temperature - °C
Honeywell reserves the right to make changes in order to improve design and supply the best products possible.
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391
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