Sony DSR-1 Service Manual page 131

CXD2302Q-T4 (SONY)
C-MOS 8-BIT 50MSPS VIDEO A/D CONVERTER
- TOP VIEW -
24 23 22 21 20 19 18 17
AV
DD
25
(+5V)
26
27
28 D GND
29
30
DV
DD
31 D GND
(+5V)
32
1 2 3 4 5 6 7 8
PIN PIN
I/O SIGNAL I/O SIGNAL
NO. NO.
1 O D0 (LSB) 17 I VRTS
2 O D1 18 I VRT
3 O D2 19 – A V
DD
4 O D3 20 – A V
DD
5 O D4 21 I V IN
6 O D5 22 – A GND
7 O D6 23 – A GND
8 O D7 (MSB) 24 I VRB
9 – TEST 25 I VRBS
10 – D V 26 I V
DD REF
11 – TEST 27 I CCP
12 I CLK 28 – D GND
13 – NC 29 I CL
14 – NC 30 I OE
15 I CLP 31 – D GND
16 – A V 32 – NC
DD
30
OE
LOWER
ENCODER
D0 1 (4 BIT)
(LSB)
2
LOWER
D1
3 DATA
D2 LOWER
LATCH
4
ENCODER
D3
(4 BIT)
5
D4
6 UPPER
UPPER
D5
ENCODER
7 DATA
D6 (4 BIT)
LATCH
8
D7
(MSB)
12
CLOCK
CLK
GENERATOR
29
CLE
27
CCP
26
V
REF
DSR-1/1P/V2
17 1
VRTS D0
18 2
VRT D1
16 3
D2
21 4
V IN D3
15 12 5
D4
6
D5
14 25 7
VRBS D6
24 8
VRB D7
13
29
CLE
12 27
CCP
26
V
REF
11 15
CLP
10
OE
30
9
INPUT
CCP ; CLAMP CONTROL VOLTAGE
FOR INTEGRATOR
CLE ; CLAMP ENABLE
CLK ; CLOCK
CLP ; CLAMP PULSE
OE ; OUTPUT ENABLE
; ANALOG
V IN
VRB ; REFERENCE VOLTAGE (BOTTOM)
VRBS ; SELF REFERENCE VOLTAGE
SHORT TO AGND (+0.6 V/BOTTOM)
V ; VOLTAGE REFERENCE FOR CLAMP
REF
VRT ; REFERENCE VOLTAGE (TOP)
VRTS ; SELF REFERENCE VOLTAGE SHORT TO AV
(+2.5 V/TOP)
OUTPUT
D0-D7 ; DATA
REFERENCE
SUPPLY
LOWER
SAMPLING
COMPARATOR
(4 BIT)
LOWER
SAMPLING
COMPARATOR
(4 BIT)
UPPER
SAMPLING
COMPARATOR
(4 BIT)
HA17431UA-TL (HITACHI)
SHUNT REGULATOR
-TOP VIEW-
1 2 3
1
Vref
+
3
−
Vz=2.5 V
2
DD
25
VRBS
24
VRB
23
A GND
22
A GND
21
V
IN
19
A V
DD
18
VRT
17
VRTS
–
+
15
D-FF CLP
2 3
Vref
1
14-17
IC