ADS-118 查看數據表（PDF） - DATEL Data Acquisition products
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ADS-118 Datasheet PDF : 9 Pages
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ADS-118, ADS-118A
12-Bit, 5MHz, Low-Power Sampling A/D Converters
4.7µF
À +5V
0.1µF
14
13, 21
5V
4.7µF
0.1µF
20
18, 23
ADS-118
ADS-118A
ANALOG
INPUT
19
START
CONVERT
16
12 BIT 1 (MSB)
11 BIT 2
10 BIT 3
9 BIT 4
8 BIT 5
7 BIT 6
6 BIT 7
5 BIT 8
4 BIT 9
3 BIT 10
2 BIT 11
1 BIT 12 (LSB)
15 EOC
17 ENABLE (1-12)
or OFFSET ADJUST
À A single +5V supply should be used for both the +5V analog and +5V digital.
If separate supplies are used, the difference between the two cannot exceed 100mV.
Figure 3. Typical Connection Diagram
START
CONVERT
INTERNAL S/H
EOC
OUTPUT
DATA
N
N+1
100ns typ.
10ns typ.
Hold
30ns, ±5ns
Acquisition Time
85ns typ.
90ns max.
35ns min., 40ns typ., 50ns max.
Conversion Time
140ns typ., 150ns max.
DATA N-1 VALID
130ns min.
150ns typ.
INVALID DATA
20ns typ.
DATA N VALID
INVALID DATA
50ns typ.
70ns max.
Note: Scale is approximately 10ns per division.
Figure 4. ADS-118/118A Timing Diagram
DATEL, Inc. 11 Cabot Boulevard, Mansfield, MA 02048-1151 USA • Tel: (508) 339-3000 • www.datel.com • e-mail: help@datel.com
26 Jun 2015 ADS-118.B05 Page 5 of 9
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