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HLC2705 Series Infrared Component, Encoder Sensor, Output Option, Speed and Direction Side-Looking, Plastic Package || HLC2705-001

Артикул: HLC2705-001
Наименование: HLC2705 Series Infrared Component, Encoder Sensor, Output Option, Speed and Direction Side-Looking, Plastic Package || HLC2705-001
Производитель: Honeywell





Description
The HLC2705 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, amplifier stages, and quadrature logic which provides two outputs. One is a fixed duration, low level active tachometer (counting) pulse. It is generated whenever the 'A' channel illumination passes through the threshold level. The second is a direction output which is set to a logic high or a logic low depending upon which channel is illuminated first. The sensor also has sensitivity compensation circuity for the output power versus temperature characteristic 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.

The tachometer output is an NPN collector, internally connected to Vcc through a 10 kOhm (nominal) resistor. The direction output is a totem-pole configuration. Both are capable of directly driving TTL loads.
The tachometer pulse is generated at both the increasing and decreasing illumination thresholds of the 'A' channel, resulting in two tachometer pulses for each mechanical period of the interrupter. The HLC2705 is designed to work with a mechanical period as small as 0.036 in (0.914 mm), providing resolution to 0.018 in(0.457 mm).

Features
  • Side-looking plastic package
  • TTL/LSTTL/CMOS compatible
  • On-chip quadrature logic which provides tach and direction outputs
  • Linear or rotary encoder applications
  • Resolution to 0.018 in [0.457 mm]
  • Sensitivity versus temperature compensation
  • Mechanically and spectrally matched to SEP8506 and SEP8706 infrared emitting diodes


Product Specifications
Series Name HLC2705
Product Type IR Component
Turn-on Threshold Irradiance 0.05 mW/cm² to 2.0 mW/cm²
Output Option Speed and Direction
Package Type PC Mount
Package Components Plastic
Operating Temperature -40 °C to 85 °C [-40 °F to 185 °F]
Operating Supply Voltage 4.5 V to 5.5 V
Operating Point Temperature Coeffient -0.76 %/°C
Duration of Output Short Vcc or Ground 1.0 second
Tach Output Inactive 4.5 V
Tach Pulse Level Active 0.4 V
Tach Pulse Width 3.0 µs to 20 µs
Comment The radiation source is IRED with a peak wavelength of 880 nm.
Availability Global
Resolution 0,46 mm [0.018 in]
Supply Current max. 12 mA @ 25 °C


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