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參數(shù)資料
| 型號(hào)： | ADC1034 |
| 廠(chǎng)商： | National Semiconductor Corporation |
| 元件分類(lèi)： | 串行ADC |
| 英文描述： | ADC1031/ADC1034/ADC1038 10-Bit Serial I/O A/D Converters with Analog Multiplexer and Track/Hold Function |
| 中文描述： | ADC1031/ADC1034/ADC1038 10位串行I /辦公自動(dòng)化/ D的模擬多路復(fù)用器和跟蹤器/保持功能 |
| 文件頁(yè)數(shù)： | 12/18頁(yè) |
| 文件大?。?/td> | 349K |
| 代理商： | ADC1034 |
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3.0 Analog Considerations
(Continued)
External Reference 2.5V Full Scale
TL/H/10556–20
Power Supply as Reference
TL/H/10556–21
Input Not Referred to GND
TL/H/10556–22
*
Current path must still exist from V
IN(
b
)
to
ground
FIGURE 3. Analog Input Options
3.3 REFERENCE AND INPUT
The two V
REF
inputs of the ADC1031/4/8 are fully differen-
tial and define the zero to full-scale input range of the A to D
converter. This allows the designer to easily vary the span
of the analog input since this range will be equivalent to the
voltage difference between V
REF
a
and V
REF
b
. By reduc-
ing V
REF
(V
REF
e
V
REF
a b
V
REF
b
) to less than 5V, the
sensitivity of the converter can be increased (i.e., if V
REF
e
2V then 1 LSB
e
1.95 mV). The input/reference arrange-
ment also facilitates ratiometric operation and in many
cases the chip power supply can be used for transducer
power as well as the V
REF
source.
This reference flexibility lets the input span not only be var-
ied but also offset from zero. The voltage at V
REF
b
sets the
input level which produces a digital output of all zeros.
Though V
IN
is not itself differential, the reference design
allows nearly differential-input capability for many measure-
ment applications. Figure 3 shows some of the configura-
tions that are possible.
The ADC1031 has no V
REF
b
pin. V
REF
b
is internally tied to
GND.
Power Supply Bypassing
TL/H/10556–23
TL/H/10556–24
12
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| ADC10321 | 10-Bit, 20MSPS, 98mW A/D Converter with Internal Sample and Hold(10位20MSPS, 98 mW帶內(nèi)部采樣和保持功能A/D轉(zhuǎn)換器) |
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相關(guān)代理商/技術(shù)參數(shù) |
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| ADC1034BIJ | 制造商:未知廠(chǎng)家 制造商全稱(chēng):未知廠(chǎng)家 功能描述:Analog-to-Digital Converter， 10-Bit |
| ADC1034CIJ | 制造商:未知廠(chǎng)家 制造商全稱(chēng):未知廠(chǎng)家 功能描述:Analog-to-Digital Converter， 10-Bit |
| ADC1034CIN | 制造商:NSC 制造商全稱(chēng):National Semiconductor 功能描述:10-Bit Serial I/O A/D Converters with Analog Multiplexer(349.46 k) |
| ADC1034CIWMX | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
| ADC1038 | 制造商:NSC 制造商全稱(chēng):National Semiconductor 功能描述:10-Bit Serial I/O A/D Converter with Analog Multiplexer |
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