參數(shù)資料
型號: ADC0803-1LCD
廠商: NXP SEMICONDUCTORS
元件分類: ADC
英文描述: CMOS 8-bit A/D converters
中文描述: 1-CH 8-BIT SUCCESSIVE APPROXIMATION ADC, PARALLEL ACCESS, PDSO20
封裝: 0.300 INCH, PLASTIC, SOP-20
文件頁數(shù): 11/18頁
文件大?。?/td> 150K
代理商: ADC0803-1LCD
Philips Semiconductors
Product data
ADC0803/0804
CMOS 8-bit A/D converters
2002 Oct 17
11
NOTE:
The V
REF
/2 voltage is either 1/2 the V
CC
voltage or is that which is forced at Pin 9.
V
REF
/2
V
CC
20
V
REF
R
R
DIGITAL
CIRCUITS
ANALOG
CIRCUITS
8
10
9
SL00021
Figure 6. Internal Reference Design
(5V)
V
REF
FS
OFFSET
ADJUST
ZS
OFFSET
ADJUST
330
0.1
μ
F
TO V
REF
/2
TO V
IN
(–)
+
SL00022
Figure 7. Offsetting the Zero Scale and Adjusting the Input
Range (Span)
VOLTAGE
REFERENCE
V
REF
/2
a. Fixed Reference
b. Fixed Reference Derived from V
CC
c. Optional Full
Scale Adjustment
V
IN
(+)
V
IN
(–)
V
CC
+5V
+
V
REF
/2
10
μ
F
A/D
A/D
V
IN
(+)
V
IN
(–)
V
CC
V
REF
/2
+
10
μ
F
+5V
+5V
2 k
100
SL00023
2 k
2 k
2 k
Figure 8. Absolute Mode of Operation
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