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DAC729 データシート(PDF) 7 Page - Burr-Brown (TI)

[Old version datasheet] Texas Instruments acquired Burr-Brown Corporation.
部品番号 DAC729
部品情報  Ultra-High Resolution 18-BIT DIGITAL-TO-ANALOG CONVERTER
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メーカー  BURR-BROWN [Burr-Brown (TI)]
ホームページ  http://www.burr-brown.com
Logo BURR-BROWN - Burr-Brown (TI)

DAC729 データシート(HTML) 7 Page - Burr-Brown (TI)

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DAC729
7
common to shunt noise pickup. This capacitor should be a
low leakage film type (such as Mylar™ or Teflon™).
Refer to Figures 5 and 6 for relationship of offset and gain
adjustments to unipolar and bipolar D/A converters.
OFFSET ADJUSTMENT
For unipolar (CSB) configurations, apply the digital input
code that should produce zero potential output and adjust the
offset potentiometer for zero output.
For bipolar (COB) configurations, apply the digital input
code that should produce the maximum negative output
voltage. See Table II for corresponding codes and Figures 2
and 3 for offset adjustment connections. Offset adjust should
be made prior to gain adjust.
GAIN ADJUSTMENT
For either unipolar or bipolar configurations, apply the
digital input that should give the maximum positive output
voltage. Adjust the gain potentiometer for this positive full-
scale voltage. See Table II for positive full-scale voltages
and Figure 3 for gain adjustment connections.
OUTPUT
CONNECT CONNECT CONNECT
RANGE
CODE
PIN 23
PIN 31
PIN 24
16-BITS
18-BITS
±10V
COB
to Pin 25
to Pin 26
to Pin 29
9.9969V
9.99992V
±5V
COB
to Pin 27
to Pin 26
to Pin 29
4.9998V
9.99996V
±2.5V
COB
to Pin 27
to Pin 26
to Pins
2.4992V
2.49998V
29 & 25
0 to 10V
CSB
to Pins
N/C
to Pin 29
9.9998V
9.99996V
25 & 26
0 to 5V
CSB
to Pins
N/C
to Pin 29
4.9999V
4.99998V
27 & 28
GAIN ADJUST
TABLE II. Output Range Connections and Gain Adjust
Voltage.
Mylar, TeflonE.I. du Pont de Nemours & Co.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25
24
23
22
21
+
1µF
+
1µF
+
1µF
–15V
+15V
+5V V
LOGIC
Analog
Common
Reference Common
Digital Common
18-Bit
DAC
FIGURE 2. Ground Connections and Supply Bypass.
–V
CC
Offset Adjust
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25
24
23
22
21
–V
CC = 15V
+5V
0.0022µF
270k
+V
CC = 15V
NOTE: (1) Mylar
or TeflonFilm.
3.9M
–V
CC
Gain Adjust
+V
CC
10k
Ω to
100k
10k
Ω to
100k
+V
CC
(1)
FIGURE 3. Gain and Offset Adjust Hook-Up.


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