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PDF UPD3778CY Data sheet ( Hoja de datos )

Número de pieza UPD3778CY
Descripción 10600 PIXELS x 3 COLOR CCD LINEAR IMAGE SENSOR
Fabricantes NEC 
Logotipo NEC Logotipo



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DATA SHEET
MOS INTEGRATED CIRCUIT
µPD3778
10600 PIXELS × 3 COLOR CCD LINEAR IMAGE SENSOR
The µPD3778 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 µPD3778 has 3 rows of 10600 pixels, and each row has a double-sided readout type of charge transfer register.
And it has reset feed-through level clamp circuits and voltage amplifiers. Therefore, it is suitable for 1200 dpi/A4 color
image scanners and so on.
FEATURES
• Valid photocell : 10600 pixels × 3
• Photocell's pitch : 4 µm
• Photocell size : 4 × 4 µm2
• Line spacing : 48 µm (12 lines) Red line-Green line, Green line-Blue line
• Color filter
: Primary colors (red, green and blue), pigment filter (with light resistance 107 lx•hour)
• Resolution
: 48 dot/mm A4 (210 × 297 mm) size (shorter side)
1200 dpi US letter (8.5” × 11”) size (shorter side)
• Drive clock level : CMOS output under 5 V operation
• Data rate
: 5 MHz MAX.
• Power supply : +12 V
• On-chip circuits : Reset feed-through level clamp circuits
Voltage amplifiers
ORDERING INFORMATION
Part Number
µPD3778CY
Package
CCD linear image sensor 32-pin plastic DIP (400 mil)
The information in this document is subject to change without notice. Before using this document, please
confirm that this is the latest version.
Not all devices/types available in every country. Please check with local NEC representative for availability
and additional information.
Document No. S14374EJ1V0DS00 (1st edition)
Date published July 1999 N CP(K)
Printed in Japan
©
1999

1 page




UPD3778CY pdf
µPD3778
ABSOLUTE MAXIMUM RATINGS (TA = +25 °C)
Parameter
Output drain voltage
Shift register clock voltage
Reset gate clock voltage
Reset feed-through level clamp clock voltage
Transfer gate clock voltage
Operating ambient temperature
Storage temperature
Symbol
VOD
Vφ1, Vφ2
VφRB
VφCLB
VφTG1 to VφTG3
TA
Tstg
Ratings
–0.3 to +15
–0.3 to +8
–0.3 to +8
–0.3 to +8
–0.3 to +8
–25 to +60
–40 to +70
Unit
V
V
V
V
V
°C
°C
Caution Exposure to ABSOLUTE MAXIMUM RATINGS for extended periods may affect device reliability;
exceeding the ratings could cause permanent damage. The parameters apply independently.
RECOMMENDED OPERATING CONDITIONS (TA = +25 °C)
Parameter
Output drain voltage
Shift register clock high level
Shift register clock low level
Reset gate clock high level
Reset gate clock low level
Reset feed-through level clamp clock high level
Reset feed-through level clamp clock low level
Transfer gate clock high level
Transfer gate clock low level
Data rate
Symbol
VOD
Vφ1H, Vφ2H
Vφ1L, Vφ2L
VφRBH
VφRBL
VφCLBH
VφCLBL
VφTG1H to VφTG3H
VφTG1L to VφTG3L
fφRB
MIN.
11.4
4.5
–0.3
4.5
–0.3
4.5
–0.3
4.5
–0.3
TYP.
12.0
5.0
0
5.0
0
5.0
0
Vφ1HNote
0
1.0
MAX.
12.6
5.5
+0.5
5.5
+0.5
5.5
+0.5
Vφ1HNote
+0.5
5.0
Unit
V
V
V
V
V
V
V
V
V
MHz
Note When Transfer gate clock high level (VφTG1H to VφTG3H) is higher than Shift register clock high level (Vφ1H),
Image lag can increase.
Data Sheet S14374EJ1V0DS00
5

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UPD3778CY arduino
µPD3778
DEFINITIONS OF CHARACTERISTIC ITEMS
1. Saturation voltage: Vsat
Output signal voltage at which the response linearity is lost.
2. Saturation exposure: SE
Product of intensity of illumination (IX) and storage time (s) when saturation of output voltage occurs.
3. Photo response non-uniformity: PRNU
The output signal non-uniformity of all the valid pixels when the photosensitive surface is applied with the light
of uniform illumination. This is calculated by the following formula.
PRNU (%) = x × 100
x
x : maximum of xj x
10600
Σ xj
j=1
x=
10600
xj : Output voltage of valid pixel number j
VOUT
Register Dark
DC level
x
x
4. Average dark signal: ADS
Average output signal voltage of all the valid pixels at light shielding. This is calculated by the following formula.
10600
Σ dj
j=1
ADS (mV) =
10600
dj : Dark signal of valid pixel number j
5. Dark signal non-uniformity: DSNU
Absolute maximum of the difference between ADS and voltage of the highest or lowest output pixel of all the valid
pixels at light shielding. This is calculated by the following formula.
DSNU (mV) : maximum of dj ADS j = 1 to 10600
dj : Dark signal of valid pixel number j
VOUT
Register Dark
DC level
ADS
DSNU
Data Sheet S14374EJ1V0DS00
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