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参数资料
| 型号： | HI3-DAC85V-4 |
| 厂商： | INTERSIL CORP |
| 元件分类： | DAC |
| 英文描述： | 12-Bit, Low Cost, Monolithic D/A Converters |
| 中文描述： | PARALLEL, WORD INPUT LOADING, 3 us SETTLING TIME, 12-BIT DAC, PDIP24 |
| 封装： | PLASTIC, DIP-24 |
| 文件页数： | 6/7页 |
| 文件大小： | 68K |
| 代理商： | HI3-DAC85V-4 |
10-1039
Reference Supply
An internal 6.3V reference is provided on board the
HI-DAC80V/HI-DAC85V. The voltage (pin 24) is accurate to
±
0.8% and must be connected to the reference input (pin 16)
for specified operation. This reference may be used exter-
nally, provided current drain is limited to 2.5mA. An external
buffer amplifier is recommended if this reference is to be
used to drive other system components. Otherwise, varia-
tions in the load driven by the reference will result in gain
variations of the HI-DAC80V/HI-DAC85V. All gain adjust-
ments should be made under constant load conditions.
Output Voltage Ranges
TABLE 2. RANGE CONNECTIONS
RANGE
CONNECT
PIN 15
PIN 17
PIN 19
Unipolar
0 to +5V
18
NC
20
0 to +10V
18
NC
NC
Bipolar
±
2.5V
18
20
20
±
5V
18
20
NC
±
10V
19
20
15
18
19
20
15
-
+
6.3K
21
-
+
CONTROL
AMP
3.9
M
R2
+V
S
-V
S
5k
TO
100k
12.6k
R1
+V
S
-V
S
2.8M
0.01
μ
F
10k
TO
100k
24
17
16
23
5k
5k
FIGURE 2. HI-DAC80V/HI-DAC85V
TABLE 3. GAIN AND OFFSET CALIBRATIONS
UNIPOLAR CALIBRATION
Step 1:
Offset
Turn all bits OFF (11 . . . 1)
Adjust R2 for 0V out
Step 2:
Gain
Turn all bits ON (00 . . . 0)
Adjust R1 for FS - 1 LSB
That is:
4.9988 for 0 to +5V range
9.9976 for 0 to +10V range
BIPOLAR CALIBRATION
Step 1:
Offset
Turn all bits OFF (11 . . . 1)
Adjust R2 for Negative FS
That is:
-10V for
±
10V range
-5V for
±
5V range
-2.5V for
±
2.5V range
Step 2:
Gain
Turn all bits ON (00 . . . 0)
Adjust R1 for Positive FS - 1 LSB
That is:
+9.9951V for
±
10V Range
+4.9976V for
±
5V Range
+2.4988V for
±
2.5V Range
This Bipolar procedure adjusts the output range end points. The
maximum error at zero (half scale) will not exceed the Linearity
Error. See the “Accuracy” Specifications.
HI-DAC80V HI-DAC85V
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相关代理商/技术参数 |
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| HI3-DAC85V-9 | 制造商:Rochester Electronics LLC 功能描述:- Bulk 制造商:Harris Corporation 功能描述: |
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