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参数资料
| 型号： | ADC0800PCD |
| 厂商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分类： | ADC |
| 英文描述： | ADC0800 8-Bit A/D Converter |
| 中文描述： | 1-CH 8-BIT SUCCESSIVE APPROXIMATION ADC, PARALLEL ACCESS, CDIP18 |
| 封装： | HERMETIC SEALED, DIP-18 |
| 文件页数： | 8/10页 |
| 文件大小： | 166K |
| 代理商： | ADC0800PCD |
Typical Applications
(Continued)
The digital output LED display can be decoded by dividing
the 8 bits into the 4 most significant bits and 4 least signifi-
cant bits. Table I shows the fractional binary equivalent of
these two 8-bit groups. By adding the decoded voltages
which are obtained from the column: ‘‘Input Voltage Value
with a 10.240 V
REF
’’ of both the MS and LS groups, the
value of the digital display can be determined. For example,
for an output LED display of ‘‘1011 0110’’ or ‘‘B6’’ (in hex)
the voltage values from the table are 7.04
a
0.24 or
7.280 V
DC
. These voltage values represent the center val-
ues of a perfect A/D converter. The input voltage has to
change by
g
(/2
LSB (
g
20 mV), the ‘‘quantization uncertain-
ty’’ of an A/D, to obtain an output digital code change. The
effects of this quantization error have to be accounted for in
the interpretation of the test results. A plot of this natural
error source is shown inFigure 5 where, for clarity, both the
analog input voltage and the error voltage are normalized to
LSBs.
TABLE I. DECODING THE DIGITAL OUTPUT LEDs
INPUT VOLTAGE
VALUE WITH
10.24 V
REF
FRACTIONAL BINARY VALUE FOR
HEX
BINARY
MS GROUP
LS GROUP
MS GROUP
LS GROUP
F
E
D
C
B
A
9
8
7
6
5
4
3
2
1
0
1
1
1
1
1
1
1
1
0
0
0
0
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
0
0
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
15/16
15/256
9.600
8.960
8.320
7.680
7.040
6.400
5.760
5.120
4.480
3.840
3.200
2.560
1.920
1.280
0.640
0
0.600
0.560
0.520
0.480
0.440
0.400
0.360
0.320
0.280
0.240
0.200
0.160
0.120
0.080
0.040
0
7/8
7/128
13/16
13/256
3/4
3/64
11/16
11/256
5/8
5/128
9/16
9/256
1/2
1/32
7/16
7/256
3/8
3/128
5/16
5/256
1/4
1/64
3/16
3/256
1/8
1/128
1/16
1/256
TL/H/5670–8
FIGURE 5. Error Plot of a Perfect A/D Showing Effects of Quantization Error
8
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PDF描述 |
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| ADC0800PD | ADC0800 8-Bit A/D Converter |
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| ADC08031 | 8-Bit High-Speed Serial I/O A/D Converters with Multiplexer Options, <BR> Voltage Reference, and Track/Hold Function |
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相关代理商/技术参数 |
参数描述 |
|---|---|
| ADC0800PCD/A+ | 制造商:未知厂家 制造商全称:未知厂家 功能描述:Analog-to-Digital Converter， 8-Bit |
| ADC0800PD | 制造商:NSC 制造商全称:National Semiconductor 功能描述:ADC0800 8-Bit A/D Converter |
| ADC0801 | 制造商:NSC 制造商全称:National Semiconductor 功能描述:8-Bit uP Compatible A/D Converters |
| ADC0801_1 | 制造商:NSC 制造商全称:National Semiconductor 功能描述:8-Bit μP Compatible A/D Converters |
| ADC0801IN | 制造商:未知厂家 制造商全称:未知厂家 功能描述:Analog-to-Digital Converter， 8-Bit |
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