ADS-CCD1201 CANDD [C&D Technologies], ADS-CCD1201 Datasheet - Page 5

• Manufacturer Part Number: ADS-CCD1201
• Description: 12-Bit, 1.2MHz, Sampling A/D Optimized for CCD Appl
• Manufacturer: CANDD [C&D Technologies]

TIMING
The ADSCCD-1201 is an edge triggered device. A conversion
is initiated by the rising edge of the start convert pulse and no
additional external timing signals are required. The device does
®
ANALOG
OFFSET
INPUT
ADJ
INTERNAL S/H
2.2MF
SG1
+15V
C19
-15V
10
12 11
14 13
16 15
18 17
20 19
22 21
24 23
25
26
2
6
8
4
P4
20K
P1
CONVERT
R2
+15V
OUTPUT
1
3
5
7
9
START
DATA
EOC
0.1MF
R1
C20
CONVERT
C1
0.1MF
GAIN
ADJ
J5
START
SEE NOTE 1
50
OP-77
0.1MF
200K
C21
-15V
+5V
+15V
6
R3
2K
1.98K
0.1%
R4
5%
®
0.1%
P3
7
1
R6
-15V
7
4
+15V
XTAL
10K
Y1
U6
100ns
2.2MF
typ.
R7
C22
C11
N
2.2
MF
–
+
0.1%
14
8
J1
2
3
3
2
DATA (N-1) VALID
+5V
10ns typ.
–
+
J2
U5
+15V
-15V
0.1MF
760ns min.
+
C23
0.1MF
C10
2.2MF
0.1MF
C24
C18
0.1MF
2.2MF
7
4
2.2MF
C12
90ns typ.
0.1%
1
2
C4
10K
-15V
C6
R8
AD845
15pF
R5
2K
C2
433ns typ.
Conversion Time
0.1MF
6
.1%
14
Hold
C13
7
Figure 4. ADS-CCD1201 Timing Diagram
COG
+5V
2.2MF
U4
C9
0.1MF
0.1MF
C3
C5
0.1MF
C15
420ns
74LS86
3
C14
2.2MF
NOTES:
1. FOR ADS-BCCD1201 Y1 IS 1.2MHZ
FOR ADS-BCCD1201 Y1 IS 2MHZ
+5V
12
13
13
14
15
16
17
18
19
20
21
22
23
24
0.1MF
C7
ADS-CCD1201/1202
+5V
DGND
EOC
ST. CONV
B2
B1
AGND
INPUT
+10VREF
+15V
AGND
-15V
INVALID
5.
U4
74LS86
DATA
U1
not employ "pipeline" delays to increase its throughput rate. It
does not require multiple start convert pulses to bring valid
digital data to its output pins.
4
5
C8
2.2MF
Acquisition Time
11
B10
B11
B12
B13
B14
74LS86
60ns min.,70ns typ., 80ns max.
B3
B4
B5
B6
B7
B8
B9
U4
400ns typ.
12
11
10
9
8
7
6
5
4
3
2
1
35ns max.
73ns max.
6
Note: Scale is approximately 25ns per division.
10
9
74LS240
74LS240
DATA N VALID
11
13
15
17
19
11
13
15
17
19
2
4
6
8
2
4
8
6
U2
U3
ADS-CCD1201 Evaluation Board Schematic
1A1
1A2
1A3
1A4
2A1
2A2
2A3
2A4
2G
74LS86
1A1
1A2
1A3
1A4
2A1
2A2
2A3
2A4
2G
U4
+5V
+5V
100ns
20
10
20
10
N+1
typ.
1Y1
1Y2
1Y3
1Y4
2Y1
2Y2
2Y3
2Y4
1Y1
1Y2
1Y3
1Y4
2Y1
2Y2
2Y3
2Y4
0.1MF
1G
1G
C17
0.1MF
C16
8
18
16
14
12
9
18
16
14
12
7
5
3
1
9
7
5
3
1
10ns typ.
B3
B4
B5
B6
B7
B1
B2
SG2
B10
B11
B12
B13
B14
B8
B9
ADS-CCD1201
SG3
Figure 5.
J4
J3
32
30
28
26
24
22
20
18
16
14
12
10
34
6
4
8
2
ST.CONV.
MSB
ENABLE
EOC
LSB
P2
33
31
29
27
25
23
21
19
17
15
13
11
9
5
3
7
1