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PDF UPD3720ACY Data sheet ( Hoja de datos )
| Número de pieza | UPD3720ACY | |
| Descripción | 2700 PIXELS x 3 COLOR CCD LINEAR IMAGE SENSOR | |
| Fabricantes | NEC | |
| Logotipo |  |
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DATA SHEET
MOS INTEGRATED CIRCUIT
µPD3720A
2700 PIXELS × 3 COLOR CCD LINEAR IMAGE SENSOR
The µPD3720A 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 µPD3720A has 3 rows of 2700 pixels and 3 pairs of 2 rows of 1350-bit charge transferred registers, reset feed-
through level clamp circuits, clamp pulse generation circuit and voltage amplifiers. It is suitable for color image
scanners, color facsimiles and so on.
FEATURES
• Valid photocell : 2700 pixels × 3
• Photocell's pitch : 10.5 µm
• Line spacing
: 42 µm (4 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
: 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
: 3 MHz MAX.
• Power supply : +12 V
• On-chip circuits : Reset feed-through level clamp circuits
Clamp pulse generation circuit
Voltage amplifiers
• Pin assign
: Compatible with the µPD3720
ORDERING INFORMATION
Part Number
µPD3720ACY
Package
CCD linear image sensor 22-pin plastic DIP (400 mil)
The information in this document is subject to change without notice.
Document No. S12035EJ1V0DS00(1st edition)
Date published November 1996 N
Printed in Japan
©
1996
1 page  
µPD3720A
ELECTRICAL CHARACTERISTICS
TA = +25 °C, VOD = 12 V, fφRB = 1 MHz, data rate = 1 MHz, storage time = 5 ms,
light source: 3200 K halogen lamp +C-500S (infrared cut filter, t = 1mm), input signal clock = 5 Vp-p
Parameter
Saturation voltage
Saturation exposure Red
Green
Blue
Photo response non-uniformity
Average dark signal
Dark signal non-uniformity
Power consumption
Output impedance
Response
Red
Green
Blue
Image lag
Offset level Note1
Output fall delay time Note2
Total transfer efficiency
Symbol
Vsat
SER
SEG
SEB
PRNU
ADS
DSNU
PW
ZO
RR
RG
RB
IL
VOS
td
TTE
Register imbalance
Response peak
Dynamic range
Red
Green
Blue
Reset feed-through noise Note1
Random noise
RI
DR1
DR2
RFTN
σ
Test Conditions
VOUT = 1 V
Light shielding
Light shielding
VOUT = 1 V
VOUT = 1 V
VOUT = 1 V,
data rate = 3 MHz
VOUT = 1 V
Vsat /DSNU
Vsat /σ
Light shielding
Light shielding
MIN.
2.0
14.14
12.95
7.77
3
92
0
–1000
–
TYP.
3.0
0.15
0.16
0.27
6
0.5
1.5
400
0.5
20.20
18.50
11.10
2
4.5
70
98
1.0
630
540
460
2000
3000
–300
1.0
MAX.
–
20
2.5
8.0
600
1
26.26
24.05
14.43
10
6.6
4.0
+300
–
Unit
V
lx•s
lx•s
lx•s
%
mV
mV
mW
kΩ
V/lx•s
V/lx•s
V/lx•s
%
V
ns
%
%
nm
nm
nm
times
times
mV
mV
Notes 1. Refer to TIMING CHART2.
2. When each fall delay time of φ1L and φ2L (t2´, t1´) is the TYP. value (refer to TIMING CHART 2).
5
5 Page 
µPD3720A
9. Register Imbalance: RI
The rate of the difference between the averages of the output voltage of Odd and Even pixels, against the average
output voltage of all the valid pixels.
n
2
Σ2
n (V2j – 1 – V2j)
RI (%) =
j=1
n
Σ1
n
Vj
j=1
× 100
n : Number of valid pixels
Vj : Output voltage of each pixel
10. Random noise: σ
Random noise σ is defined as the standard deviation of a valid pixel output signal with 100 times (=100 lines)
data sampling at dark (light shielding).
100
Σ Σσ =
(Vi – V)2
i=1
1 100
, V=
Vi
100 i=1
100
Vi : A valid pixel output signal among all of the valid pixels for each color
VOUT
V1
V2
V100
line 1
line 2
line 100
This is measured by the DC level sampling of only the signal level, not by CDS (Correlated Double Sampling).
11
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| PDF Descargar | [ Datasheet UPD3720ACY.PDF ] | |
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