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PI627 Datasheet(PDF) 8 Page - AMI SEMICONDUCTOR |
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PI627 Datasheet(HTML) 8 Page - AMI SEMICONDUCTOR |
8 / 13 page PI627MC-A4 / PI628MC-A4 / PI629MC-A4 Engineering Data Sheet _______________________________________________________________________ Module: PI629MC-A4 Light source: Low Power Yellow-Green LED Parameter Symbol Value Units Notes Line scanning rate(1) Tint 450 µsec @ 3.0MHz clock frequency Clock frequency(2) Fclk 3.0 MHz Bright output voltage(3)(7) Video Output 0.5 Volt Bright output nonuniformity(4) Up < +/-30 % Adjacent photo-response non- uniformity(5) Upn <25 % Dark nonuniformity(6) Ud < 100 mV Dark output voltage(7) Dark Level (DL) < 350 mV Modulation transfer function(8) MTF > 40 % Table 9. PI629MC-A4 / Low Power Yellow-Green LED Electro-Optical Characteristics Notes: 1. Tint is the line-scanning rate or integration time and is determined by the interval between two start pulses, SP. The integration time listed for each module is the minimum integration time required to give 0.5 volts output at each modules maximum clock frequency. 2. Fclk is the main clock frequency, also equals the pixel rate. 3. Video output level is dependent on the Integration time and LED light power. 4. Up = [Vp(max) - Vpavg] / Vpavg x 100% or [Vpavg - Vp(min)] / Vpavg} x 100%, whichever is greater. Where Vp(max) = maximum pixel level, Vp(min) = minimum pixel level, and Vpavg = average of all pixels. 5. Adjacent Photo-Response Non-Uniformity (Upn). Upn = Max ((Vpn – Vpn+1) / Min (Vpn, Vpn+1)) x 100%, where Vpn is the pixel output voltage of pixel n in the light. 6. Ud = Vdmax - Vdmin, where Vdmin is the minimum output voltage with LED off and Vdmax is maximum output voltage with LED on. 7. See paragraph under Reset Level and Video Sampling Time on page 10 for explanation. 8. See the paragraph under Depth of Focus on page 11. A graph of the typical MTF vs Depth of Focus is shown. Page 8 of 13, Revised 9-08-05 |
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