Description Of Mechanism; Ca1 Circuit Description - Olympus Camedia C-7070 Repair Manual

[1] CA1 CIRCUIT DESCRIPTION

1. IC Configuration
IC902 (ICX489AQF) CCD imager
IC991, IC992 (CXD3440EN) V driver (CP1 board)
IC906 (AD9949KCP) CDS, AGC, A/D converter, H driver
2. IC902 (CCD)
Interline type CCD image sensor
Optical size
Effective pixels
Pixels in total
Optical black
Horizontal (H) direction: Front 48 pixels, Rear 4 pixels
Vertical (V) direction: Front 12 pixels, Rear 2 pixels
Dummy bit number
V
48
Pin 15
Fig. 1-1.Optical Black Location (Top View)
Pin No.
Symbol
1
Vφ
1
3, 14
Vφ Vφ
2, 10
Vφ Vφ Vφ
5, 6, 8,
3A, 3B, 5A,
9, 11, 13
Vφ Vφ Vφ
5B, 7, 9
7, 10, 12 Vφ Vφ Vφ
4, 6, 8
15 V
OUT
16, 17, 18, 28 GND
19 V
DD
20
φRG
26, 21 Hφ Hφ
2A, 2B
25, 22 Hφ Hφ
1A, 1B
23 φSUB
24 C
SUB
27
V
L
H. DESCRIPTION OF MECHANISM
1/1.8 type
3112 (H) x 2328 (V)
3164 (H) x 2342 (V)
Horizontal : 28
Pin 1
2
12
H
4
Pin Description
Vertical register transfer clock
Vertical register transfer clock
Vertical register transfer clock
Vertical register transfer clock
Signal output
GND
Circuit power
Reset gate clock
Horizontal register transfer clock
Horizontal register transfer clock
Substrate clock
Substrate voltage bias
Protection transistor bias
Table 1-1. CCD Pin Description
14 13 12 11 10
15 16 19
17 18
Fig. 1-2. CCD Block Diagram
Waveform
GND
DC
DC
DC
DC
H-2
C-7070 Wide Zoom
9 8 7 6 5 4 3 2
B
G B
G
G
R G
R
B
G B G
G
R G R
B
G B G
G
G R
R
B
G B
G
G
R
G R
B
G B G
G
R G R
B
G B G
(Note)
G
R G R
Horizontal register
20
21 22 23 24 25 26 27 28
(Note) : Photo sensor
Voltage
-7.5 V, 0 V, 15 V
-7.5 V, 0 V
-7.5 V, 0 V, 15 V
-7.5 V, 0 V
Aprox. 10 V
0 V
15 V
12.5 V, 16 V
0 V, 3.3 V
0 V, 3.3 V
Aprox. 8 V
Aprox. 8V
(Different from every CCD)
-7.5 V
When sensor read-out
1
Ver. 1