UPD3794 Datasheet, PDF (1/20 Pages) NEC – 2700 PIXELS x 3 COLOR CCD LINEAR IMAGE SENSOR

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 : 2700 pixels × 3
• Photocell's pitch : 8 µm
• Line spacing
: 32 µm (4 lines) Green line-Blue line, Blue line-Red line
• Color filter
: Primary colors (red, green and blue), pigment filter (with light resistance 10⁷ lx•hour)
• Resolution
: 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
: 4 MHz MAX.
• Power supply : +12 V
• On-chip circuits : Reset feed-through level clamp circuits
Clamp pulse generation circuit
RGB selector
Voltage amplifiers
ORDERING INFORMATION
Part Number
µPD3794CY
Package
CCD linear image sensor 22-pin plastic DIP (400 mil)
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