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ADC08004-1CD View Datasheet(PDF) - Philips Electronics

Part NameDescriptionManufacturer
ADC08004-1CD CMOS 8-bit A/D converters Philips
Philips Electronics Philips
ADC08004-1CD Datasheet PDF : 18 Pages
First Prev 11 12 13 14 15 16 17 18
Philips Semiconductors
CMOS 8-bit A/D converters
Product data
ADC0803/0804
R
VREF/2 9
R
VCC
20 VREF
DIGITAL
CIRCUITS
ANALOG
CIRCUITS
(5V)
VREF
FS
OFFSET
+
ADJUST
ZS
OFFSET
ADJUST
330
TO VREF/2
0.1 µF
TO VIN(–)
8
10
NOTE:
The VREF/2 voltage is either 1/2 the VCC voltage or is that which is forced at Pin 9.
SL00021
Figure 6. Internal Reference Design
SL00022
Figure 7. Offsetting the Zero Scale and Adjusting the Input
Range (Span)
VIN(+)
VIN(–)
+5V
VCC
+
10 µF
A/D
VREF/2
VOLTAGE
REFERENCE
VREF/2
VIN(+)
VIN(–)
+5V
VCC
+
10 µF
A/D
VREF/2
2 k
2 k
a. Fixed Reference
b. Fixed Reference Derived from VCC
Figure 8. Absolute Mode of Operation
+5V
2 k
100
2 k
c. Optional Full
Scale Adjustment
SL00023
2002 Oct 17
11
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