®
®
ADS-951
Pin 5 (ADS-951)
10k9
6
GAIN
ADJUST
15
EOC
2 BIT 1 (MSB)
1 BIT 2
32 BIT 3
31 BIT 4
30 BIT 5
29
28
27
26
25
24
23
22
21
BIT 6
BIT 7
BIT 8
BIT 9
BIT 10
BIT 11
BIT 12
BIT 13
BIT 14
+5V DIGITAL
10µF
0.1µF
14
13 DIGITAL
GROUND
8
–15V
+
10µF
0.1µF
12 ANALOG
GROUND
9
+15V
10µF
0.1µF
+
ADS-951
+5V ANALOG
10µF
10
+
0.1µF
+
3 ANALOG
GROUND
11
5 +5V
REF. OUT
ANALOG INPUT
0.1µF
10µF
START CONVERT
COMPENSATION
16
7
4
20 BIT 15
19 BIT 16
18 BIT 17
17 BIT 18 (LSB)
–5V ANALOG
10µF
0.1µF
47µF
+
Figure 2. Typical ADS-951 Connection Diagram
N
START
CONVERT
500ns typ.
N+1
5ns typ.
INTERNAL S/H
740ns typ.
Hold
Acquisition Time
260ns typ.
65ns typ.
EOC
Conversion Time
730ns typ.
20ns typ.
OUTPUT
DATA
Data N-2 Valid
Invalid Data
Data N-1 Valid
980ns typ.
20ns
N
Scale is approximately 50ns per division.
Figure 3. ADS-951 Timing Diagram
5
MURATA-PS [ MURATA POWER SOLUTIONS INC. ]
