參數(shù)資料
型號: ADC0838
廠商: National Semiconductor Corporation
元件分類: 串行ADC
英文描述: 8-Bit Serial I/O A/D Converters with Multiplexer Options
中文描述: 8位串行I /辦公自動化/ D轉(zhuǎn)換器多路復(fù)用選項
文件頁數(shù): 20/26頁
文件大?。?/td> 410K
代理商: ADC0838
ML2281, ML2282, ML2284, ML2288
20
APPLICATIONS
(Continued)
Obtaining 9-Bit Resolution
V
CC
V
IN
V
IN
(+)
V
IN
(–)
V
CC
V
CC
(5V
DC
)
–15V
DC
15V
DC
V
REF
+
+
+
ML2281
+
2.5V
(
> 2.5V
+
R
R
ML2281
+
+
10
μ
F
OP
AMP
600
1
μ
F
V
IN
(–)
V
IN
(+)
V
CC
V
REF
V
CC
(5V
DC
)
V
CC
(5V
DC
)
ML2281
LOAD
LM336
9.1k
240k
120k
100
0.1
(2A FULL-SCALE)
I
LOAD
2k
1k
FS
ADJ.
10k
FS
ADJ.
100
ZERO
ADJ.
+
10
μ
F
+
V
IN
(+)
*V
(–) = 0.15V
CC
15% OF V
CC
V
XDR
85% OF V
CC
V
CC
V
REF
V
CC
(5V
DC
)
ML2281
0.7 V
CC
1k
FS
ADJ.
24k
1k
ZERO
ADJ.
+
10
μ
F
+
1
μ
F
V
CC
(5V
DC
)
+
+
10
μ
F
10k
2k
20k
3k
V
IN
(–)*
XDR
V
XDR
+
V
IN
(+)
V
IN
V
CC
V
REF
ML2281
+
1
μ
F
SET FOR 3V
V
IN
(–)
CONTROLLER PERFORMS A ROUTINE TO DETERMINE WHICH
INPUT POLARITY PROVIDES A NON-ZERO OUTPUT CODE.
THIS INFORMATION PROVIDES THE EXTRA BITS.
DIODE CLAMPING IS NOT NEEDED
IF CURRENT IS LIMITED TO 25mA
3k
1k
Protecting the Input
Operating with Ratiometric Transducers
Span Adjust: 0V - V
IN
- 3V
Digitizing a Current Flow
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