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參數(shù)資料
| 型號(hào)： | DAC703K |
| 英文描述： | Monolithic 16-Bit DIGITAL-TO-ANALOG CONVERTERS |
| 中文描述： | 單片16位數(shù)字到模擬轉(zhuǎn)換器 |
| 文件頁(yè)數(shù)： | 7/10頁(yè) |
| 文件大?。?/td> | 402K |
| 代理商： | DAC703K |
7
DAC701, 702, 703
POWER SUPPLY SENSITIVITY
Power supply sensitivity is a measure of the effect of a
change in a power supply voltage on the D/A converter
output. It is defined as a percent of FSR change in the output
per percent of change in either the positive supply (+V
CC
),
negative supply (–V
CC
) or logic supply (V
DD
) about the
nominal power supply voltages (see Figure 2).
It is specified for DC or low frequency changes. The typical
performance curve in Figure 2 shows the effect of high
frequency changes in power supply voltages.
FIGURE 2. Power Supply Rejection vs Power Supply Ripple
Frequency.
Power Supply Ripple Frequency (Hz)
1
10
100
1k
10k
100k
0.030
0.025
0.020
0.015
0.01
0.005
0
%
S
–15V Supply
+15V
Supply
+5V
Supply
REFERENCE SUPPLY
All models have an internal low-noise +6.3V reference
voltage derived from an on-chip buried zener diode. This
reference voltage, available to the user, has a tolerance of
±
5% (KH models) and
±
1% (BH models). A minimum of
1.5mA is available for external loads. Since the output
impedance of the reference output is typically 1W, the
external load should remain constant.
If a varying load is to be driven by the reference supply, an
external buffer amplifier is recommended to drive the load
in order to isolate the bipolar offset (connected internally to
the reference) from load variations.
OPERATING INSTRUCTIONS
POWER SUPPLY CONNECTIONS
For optimum performance and noise rejection, power sup-
ply decoupling capacitors should be added as shown in the
Connection Diagram. 1
μ
F tantalum capacitors should be
located close to the D/A converter.
EXTERNAL ZERO AND GAIN ADJUSTMENT
Zero and gain may be trimmed by installing external zero
and gain potentiometers. Connect these potentiometers as
shown in the Connection Diagram and adjust as described
below. TCR of the potentiometers should be 100ppm/
°
C or
less. The 3.9M
and 270k
resistors (
±
20% carbon or
better) should be located close to the D/A converter to
prevent noise pickup. If it is not convenient to use these
high-value resistors, an equivalent “T” network, as shown in
Figure 3, may be substituted in place of the 3.9M
part. A
0.001
μ
F to 0.01
μ
F ceramic capacitor should be connected
from Gain Adjust to Common to prevent noise pickup. Refer
to Figures 4 and 5 for the relationship of zero and gain
adjustments to unipolar and bipolar D/A converters.
FIGURE 3. Equivalent Resistances.
≡
180k
180k
3.9M
10k
Digital Input
H
Input =
0000
H
Input =
FFFF
Gain Adjust
Rotates
the Line
Range
of Gain
Adjust
1LSB
+ Full
Scale
F
Range of
Zero Adjust
Zero Adjust
Translates
the Line
A
FIGURE 4.
Relationship of Zero and Gain Adjustments for
Unipolar D/A Converters, DAC701.
Digital Input
H
Input =
FFFF
Gain
Adjust
Rotates
the Line
Range
of Gain
Adjust
1LSB
F
R
+ Full
Scale
– Full
Scale
Range
and
Offset
Adjust
Offset
Adjust
Translates
the Line
H
Input =
0000
MSB on All
Others Off 7FFF
H
A
FIGURE 5. Relationship of Zero and Gain Adjustments for
Bipolar D/A Converters, DAC702 and DAC703.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| DAC703L | Monolithic 16-Bit DIGITAL-TO-ANALOG CONVERTERS |
| DAC703S | Monolithic 16-Bit DIGITAL-TO-ANALOG CONVERTERS |
| DAC702CH | Monolithic 16-Bit DIGITAL-TO-ANALOG CONVERTERS |
| DAC702KH | Monolithic 16-Bit DIGITAL-TO-ANALOG CONVERTERS |
| DAC702LH | Monolithic 16-Bit DIGITAL-TO-ANALOG CONVERTERS |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| DAC703KH | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:16-Bit Digital-to-Analog Converter |
| DAC703KH-4 | 制造商:BB 制造商全稱:BB 功能描述:Monolithic 16-Bit DIGITAL-TO-ANALOG CONVERTERS |
| DAC703KH-BI | 制造商:BB 制造商全稱:BB 功能描述:Monolithic 16-Bit DIGITAL-TO-ANALOG CONVERTERS |
| DAC703KP | 制造商:Rochester Electronics LLC 功能描述: |
| DAC703KU | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
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