agilent AECS-1000-AA02 color sensing application kit?ransmissive data sheet description agilent? color sensing application kit is a light-to-voltage converting device. the application kit consists of a color sensor front end, followed by post-sensor amplifiers. featuring a filter coated photodiode, the color sensor converts the primary components of light, namely, red (r), green (g) and blue (b), into photocurrent. the amplifier amplifies and converts photocur- rent into analog voltages for each of the r, g, b component, denoted by v rout , v gout and v bout , respectively. in order to cater for different lighting conditions, gain selection of either 1x or 10x has been incorporated into the application kit. theory of operation the application kit is used for incident light sensing where the sensor is placed facing light source directly. the r, g, b components of the light falling on the sensor is converted into equivalent analog voltage representations. given that any colored light is uniquely represented by the ratio of the primary colors, the sensor provides a definite manner of measuring light color. in addition, the sensor is also responsive to features convert color point of light to analog voltage integrated photodiode and amplifier integral r, g, b color filters gain selection switch operating temperature: 0 to +50 c light intensity where its outputs increase linearly with increasing light intensity. in addition, the sensor can also be used to measure color of a medium placed between light source and the sensor. examples include liquid and transparent materials such as glass and plastic. 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 detection, 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, pharmaceutical, 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-1000 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 5.0 6.0 v electrical characteristics electrical characteristics at v dd = 5v, t a = 25 c, r l = 10 k ? parameter symbol remark min. typ. max. unit dark voltage v d ee=0 0 20 mv maximum output voltage vomax 3.0 3.3 v output voltage [1] v out ee= 3.034 mw/cm 2 1.0 1.5 2.0 v refer to note 2. ee= 3.618 mw/cm 2 1.0 1.5 2.0 v refer to note 3. ee= 2.639 mw/cm 2 1.0 1.5 2.0 v refer to note 4. output rise time tr 10 100 s output fall time tf 10 100 s irradiance responsivity [1] re refer to note 2. b 0.49 v/(mw/cm 2 ) g 0.12 v/(mw/cm 2 ) r 0.07 v/(mw/cm 2 ) refer to note 3. b 0.33 v/(mw/cm 2 ) g 0.41 v/(mw/cm 2 ) r 0.09 v/(mw/cm 2 ) refer to note 4. b 0.10 v/(mw/cm 2 ) g 0.11 v/(mw/cm 2 ) r 0.57 v/(mw/cm 2 ) notes: 1. responses with gain selection set to 1x. increasing the gain selection to 10x will result in a ten fold increase in output vo ltage. 2. test condition is blue light of peak wavelength 468 nm and spectral half width 30 nm. 3. test condition is green light of peak wavelength 519 nm and spectral half width 20 nm. 4. test condition is red light of peak wavelength 636 nm and spectral half width 35 nm. recommended operating conditions parameter symbol min. typ. max. units notes operating temperature t s 02550 c supply voltage v dd 5.0 5.5 6.0 v supply current i dd 20 ma esd warning: normal precautions should be taken to avoid static discharge.
3 pin configuration pin description normal operation 1v dd 5v dc supply 2 gnd ground 3 vrout analog voltage output for red 4 vgout analog voltage ouput for green 5 vbout analog voltage ouput for blue esd warning: normal precautions should be taken to avoid static discharge. 100 nf color sensor sensor module (1) vdd (2) gnd (3) vrout (4) vgout ( 5 ) vbout light source post sensor amplifier figure 1. schematic of transmissive application kit. color sensor spectral response 0.0000 0.1000 0.2000 0.3000 0.4000 0.5000 0.6000 0.7000 0.8000 0.9000 1.0000 350 400 450 500 550 600 650 700 750 wavelength (nm) normalized sensi tivity r gb
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 5989-0618en
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