UPD3794

DATA SHEET MOS INTEGRATED CIRCUIT µPD3794 2700 PIXELS × 3 COLOR CCD LINEAR IMAGE SENSOR The µPD3794 is a color CCD (Charge Coupled Device) linear image sensor which changes optical images to electrical signal and has the function of color separation. The µPD3794 has 3 rows of 2700 pixels, and each row has a single-sided readout type of charge transfer register. And it has reset feed-through level clamp circuits, a clamp pulse generation circuit, an RGB selector and voltage amplifiers. Therefore, it is suitable for 300 dpi/A4 color image scanners, color facsimiles and so on. FEATURES Valid photocell Line spacing Color filter Resolution : 2700 pixels × 3 : 32 µm (4 lines) Green line-Blue line, Blue line-Red line : Primary colors (red, green and blue), pigment filter (with light resistance 107 lxhour) : 12 dot/mm A4 (210 × 297 mm) size (shorter side) 300 dpi US letter (8.5” × 11”) size (shorter side) Drive clock level : CMOS output under 5 V operation Data rate Power supply On-chip circuits : 4 MHz MAX. : +12 V : Reset feed-through level clamp circuits Clamp pulse generation circuit RGB selector Voltage amplifiers Photocell's pitch : 8 µm ORDERING INFORMATION Part Number Package CCD linear image sensor 22-pin plastic DIP (400 mil) µPD3794CY The information in this document is subject to change without notice. Document No.S13125EJ1V0DS00(1st edition) Date published December 1997 N CP(K) Printed in Japan © 1997 µPD3794 BLOCK DIAGRAM φ1 14 SEL1 SEL2 ...