ADS-951 查看數據表（PDF） - DATEL Data Acquisition products
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ADS-951 Datasheet PDF : 7 Pages
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ADS-951
18-Bit, 1MHz, Low-Power Sampling A/D Converters
10k
+5VA
–5VA
ANALOG
ANALOG
+5VA ANALOG
+5VD DIGITAL
+5VA ANALOG
–5VA ANALOG
10k
–5VA ANALOG
10μF 0.1μF
+
10μF
+
0.1μF
10μF 0.1μF
6
5
26
GAIN OFFSET EOC
ADJUST ADJUST
29
28 DIGITAL
GROUND
7
30
31 ANALOG
GROUND
32
2
4
1 +4.22V
REF. OUT
ADS-951
27
START CONVERT
3
ANALOG INPUT
25 BIT 1 (MSB)
24 BIT 2
23 BIT 3
22 BIT 4
21 BIT 5
20 BIT 6
19 BIT 7
18 BIT 8
17 BIT 9
16 BIT 10
15 BIT 11
14 BIT 12
13 BIT 13
12 BIT 14
11 BIT 15
10 BIT 16
9 BIT 17
8 BIT 18 (LSB)
Figure 2. Typical ADS-951 Connection Diagram
N
N+1
START
CONVERT
500ns typ.
INTERNAL S/H
5ns typ.
740ns typ.
Hold
Acquisition Time
260ns typ.
EOC
65ns typ.
Conversion Time
730ns typ.
20ns typ.
Invalid Data
20ns
OUTPUT
DATA
Data N-1 Valid
Data N Valid
N+1
980ns typ.
Scale is approximately 50ns per division.
Figure 3. ADS-951 Timing Diagram
DATEL, Inc. 11 Cabot Boulevard, Mansfield, MA 02048-1151 USA • Tel: (508) 339-3000 • www.datel.com • e-mail: help@datel.com
10 Sep 2015 MDA_ADS-951.E01 Page 5 of 7
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