Outline Of Circuit Description - Sanyo VPC-MZ1E Service Manual

1. OUTLINE OF CIRCUIT DESCRIPTION

1-1. CA1 and A PART OF CA2 CIRCUIT
DESCRIPTIONS
Around CCD block
1. IC Configuration
CA1 board
IC903 (ICX274AQ) CCD imager
IC901, IC902 (CXD3400N) V driver
CA2 board
IC911 (H driver, CDS, AGC and A/D converter)
2. IC903 (CCD imager)
[Structure]
Interline type CCD image sensor
Image size Diagonal 8.293 mm (1/1.8 type)
Pixels in total 1688 (H) x 1248 (V)
Recording pixels 1600 (H) x 1200 (V)
Pin No.
Symbol
Vertical register transfer clock
1 Vø
4
2 Vø Vertical register transfer clock
3A
3 Vø Vertical register transfer clock
3B
4
Vø Vertical register transfer clock
3C
5 Vertical register transfer clock
Vø
2A
6 Vertical register transfer clock
Vø
2B
7 Vø Vertical register transfer clock
2C
Vertical register transfer clock
8 Vø
1
9
GND GND
10 V Signal output
OUT
3. IC901, IC902 (V Driver) and IC911 (H Driver)
An H driver and V driver are necessary in order to generate
the clocks (vertical transfer clock, horizontal transfer clock
and electronic shutter clock) which driver the CCD.
IC901 and IC902 are V driver. In addition the XV1-XV4 sig-
nals which are output from IC102 are the vertical transfer
clocks, and the XSG signal which is output from IC102 is su-
perimposed onto XV2 and XV3 at IC901 and IC902 in order
to generate a ternary pulse. In addition, the XSUB signal which
is output from IC102 is used as the sweep pulse for the elec-
tronic shutter. A H driver is inside IC911, and H1A, H1B, H2A,
H2B and RG clock are generated at IC911.
Pin Description
Table 1-1. CCD Pin Description
– 2 –
10 7 6
9 8
G
R
G
R
G
R
G
R
Horizontal register
11
12 13 15
14
Fig. 1-1. CCD Block Diagram
Pin No.
Symbol
11 Circuit power
V
DD
12 øRG Reset gate clock
13 Hø Horizontal register transfer clock
2B
Hø
14 Horizontal register transfer clock
1B
GND GND
15
16 øSUB Substrate clock
17 C Substrate bias
SUB
Protection transistor bias
18 V
L
19 Hø Horizontal register transfer clock
1A
20 Hø Horizontal register transfer clock
2A
4 3 2 1
5
B G
B
G R G
B G B
G
G R
G B
B
G
G R
B G B
G
G R
(Note)
16 17 18 19 20
(Note) : Photo sensor
Pin Description
I
index