agilent AECS-1010-AA02 color sensing application kit?eflective data sheet description agilent? color sensing application kit is a light-to-voltage converting device. the kit combines a white led light source, a color sensor and post-sensor amplifying circuitry. featuring a filter coated photodiode, the colour sensor converts the primary components of light, namely, red (r), green (g) and blue (b), into photocur- rent. the amplifier amplifies and converts photocurrent into analog voltages for each of the r, g, b component, denoted by v rout , v gout and v bout , respectively. the kit incorporates optical lens to focus reflected light to the sensor as well as a gap alignment tool for ease of usage. theory of operation the application kit is used in reflective arrangement where the led light source and color sensor are placed close to the surface/object of interest. light emitted by the led is reflected off the surface/object and measured by the sensor. for a given led color, the color of light reflected depends on surface/ object color. given that any color is made up of unique r, g, b ratio, the sensor provides a definite manner of measuring reflected light color, and hence, features convert color point of reflective light to analog voltage integrated photodiode and transimpedance amplifier integral r, g, b color filters high intensity white led illuminant operating temperature 0 to +50 c optical lens and gap alignment tool for light focusing the surface/object color. the kit also differentiates reflectivity of surfaces/objects where more light bounces off highly reflective surface and results in increased sensor output voltage. applications being able to accurately and consistently name a color, the color sensor opens up opportuni- ties to manipulate and control color. it is ideal for color detec- tion, color measurement and color control in both open and closed loop systems. potential areas of application are office automation, quality control and color coding in such industries as food, textile, paint, assembly and packaging, environmental lighting, consumer good, pharma- ceutical, medical and research and automotive. note: the application kit is only meant for engineering evaluation purposes and not for reliability testing. esd warning: normal precautions should be taken to avoid static discharge.
2 aecs-1010 absolute maximum ratings subjecting the device beyond maximum ratings may cause permanent damage to the device; these are stress rating beyond which proper operation of device is not guaranteed. prolonged exposure to these extreme conditions may also affect reliability of the device. parameter symbol min. max. units storage temperature t s 050 c operating temperature t a 050 c supply voltage v dd 56 v application kit electrical characteristics electrical characteristics at v dd = 5.5v, t a = 25 c, r l = 10 k ? parameter symbol min. typ. max unit remark dark voltage v d 30 100 mv output voltage v o 2 v sensing ?hite?of macbeth chart. supply current i dd 40 ma recommended operating conditions parameter symbol min. typ. max. units notes operating temperature t a 02550 c supply voltage v dd 5 5.5 6 v sensor gap g 10 mm sensor-gap guide is set to 10 mm height esd warning: normal precautions should be taken to avoid static discharge.
3 pin configuration pin description 1v dd 2 ground 3 analog output for red 4 analog ouput for green 5 analog ouput for blue esd warning: normal precautions should be taken to avoid static discharge. figure 1. schematic of reflective sensing application kit. 47 ? 100 nf led color sensor led-sensor module (1) vdd (2) gnd (3) vrout (4) vgout (5) vbout post sensor amplifier figure 2. light source relative intensity vs. wavelength. wavelength nm relative luminous intensity 380 780 1.0 0.6 0 680 580 480 0.4 0.8 0.2 led electrical and optical characteristics parameter sym. min. typ. max. unit remark forward voltage v f 3.8 4.0 v i f = 20 ma reverse voltage v r 5.0 v i r = 10 a intensity i v 4200 12000 mcd i f = 20 ma wavelength refer to led spectrum graph.
www.agilent.com/semiconductors for product information and a complete list of distributors, please go to our web site. for technical assistance call: americas/canada: +1 (800) 235-0312 or (916) 788-6763 europe: +49 (0) 6441 92460 china: 10800 650 0017 hong kong: (65) 6756 2394 india, australia, new zealand: (65) 6755 1939 japan: (+81 3) 3335-8152(domestic/international), or 0120-61-1280(domestic only) korea: (65) 6755 1989 singapore, malaysia, vietnam, thailand, philippines, indonesia: (65) 6755 2044 taiwan: (65) 6755 1843 data subject to change. copyright ? 2004 agilent technologies, inc. january 28, 2004 5989-0619en
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