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參數資料
| 型號： | DAC702KH |
| 英文描述： | Monolithic 16-Bit DIGITAL-TO-ANALOG CONVERTERS |
| 中文描述： | 單片16位數字到模擬轉換器 |
| 文件頁數： | 10/12頁 |
| 文件大?。?/td> | 308K |
| 代理商： | DAC702KH |
10
DAC701, 702, 703
APPLICATIONS
DRIVING AN EXTERNAL OP AMP
WITH CURRENT OUTPUT D/AS
DAC702 is current output devices and will drive the sum-
ming junction of an op amp to produce an output voltage as
shown in Figure 9. Use of the internal feedback resistor is
required to obtain specified gain accuracy and low gain drift.
DAC702 can be scaled for any desired voltage range with an
external feedback resistor, but at the expense of increased
drifts of up to
±
50ppm/
°
C. The resistors in the DAC702 ratio
track to
±
1ppm/
°
C but their absolute TCR may be as high as
±
50ppm/
°
C.
An alternative method of scaling the output voltage of the
D/A converter and preserving the low gain drift is shown in
Figure 10.
OUTPUTS LARGER THAN 20V RANGE
For output voltage ranges larger than
±
10V, a high voltage
op amp may be employed with an external feedback resistor.
Use I
OUT
values of
±
1mA for bipolar voltage ranges and
–2mA for unipolar voltage ranges (see Figure 11). Use
protection diodes as shown when a high voltage op amp is
used.
Common
I
OUT
V
OUT
R
F
5k
4k
0 to
2mA
FIGURE 9. External Op Amp Using Internal Feedback
Resistors.
I
OUT
V
OUT
R
F
5k
4k
0 to
2mA
R
1
I
*
R
2
*
Common
R
1
*
, R
2
TCR < ±10ppm/°C
FIGURE 10. External Op Amp Using Internal and External
Feedback Resistors to Maintain Low Gain Drift.
FIGURE 11. External Op Amp Using External Feedback
Resistors.
V
OUT
R
F
4k
0 to
2mA
BB3584
R
F
相關PDF資料 |
PDF描述 |
|---|---|
| DAC702LH | Monolithic 16-Bit DIGITAL-TO-ANALOG CONVERTERS |
| DAC702SH | Monolithic 16-Bit DIGITAL-TO-ANALOG CONVERTERS |
| DAC703BH-BI | Monolithic 16-Bit DIGITAL-TO-ANALOG CONVERTERS |
| DAC703CH-BI | Monolithic 16-Bit DIGITAL-TO-ANALOG CONVERTERS |
| DAC703JP | Monolithic 16-Bit DIGITAL-TO-ANALOG CONVERTERS |
相關代理商/技術參數 |
參數描述 |
|---|---|
| DAC702KH-2 | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
| DAC702LH | 制造商:BB 制造商全稱:BB 功能描述:Monolithic 16-Bit DIGITAL-TO-ANALOG CONVERTERS |
| DAC702SH | 制造商:BB 制造商全稱:BB 功能描述:Monolithic 16-Bit DIGITAL-TO-ANALOG CONVERTERS |
| DAC703 | 制造商:BB 制造商全稱:BB 功能描述:Monolithic 16-Bit DIGITAL-TO-ANALOG CONVERTERS |
| DAC703B | 制造商:BB 制造商全稱:BB 功能描述:Monolithic 16-Bit DIGITAL-TO-ANALOG CONVERTERS |
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