ADS-941 View Datasheet(PDF) - C and D TECHNOLOGIES
Part Name
Description
MFG CO.
'ADS-941' PDF : 6 Pages View PDF
ADS-941
®
®
N
N+1
START
CONVERT
50ns min., 100ns max
35ns max.
EOC
INTERNAL S/H
Conversion Time
600ns typ.
10ns typ.
Hold
Aquisition Time
350ns max.
OUTPUT
DATA
DATA N-1 VALID
INVALID DATA
30ns max.
DATA N VALID
400ns max.
600ns min.
Scale is approximately 50ns per division.
Figure 2. ADS-941 Timing Diagram
Removing System Errors
Use external potentiometers to remove system errors or to
reduce the small initial errors to zero. Use a 100Ω trimpot in
series with the analog input for gain adjustment. Use a fixed
50Ω resistor instead of the trimpot for operation without
adjustment. Use a 20kΩ trimpot with the wiper tied to OFFSET
ADJUST (pin 5) for zero/offset adjustment. Connect pin 5 to
ANALOG GROUND (pin 6) for operation without zero/offset
adjustment.
ZERO/OFFSET
ADJUST
20kΩ
+5V
–5V
+5V
4.7µF
0.1µF
10
11
DIGITAL
GROUND
5
OFFSET
ADJUST
+15V
4.7µF
0.1µF
4.7µF 0.1µF
–15V
12
6,
14,
15
ANALOG
GROUND
13
GAIN ADJUST
ADS-941
0 to +10V
100Ω
3 ANALOG INPUT
4 SIGNAL GROUND
0.1µF
4.7µF
1
+10V
REF. OUT
CODING SELECT 8
START CONVERT 32
ENABLE 9
BIPOLAR 2
31 BIT 1 (MSB)
30 BIT 1 (MSB)
29 BIT2
28 BIT 3
27 BIT 4
26 BIT 5
25 BIT 6
24 BIT 7
23 BIT 8
22 BIT 9
21 BIT 10
20 BIT 11
19 BIT 12
18 BIT 13
17 BIT 14 (LSB)
7 OVERFLOW
16 EOC
Figure 3. ADS-941 Connection Diagram
4
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