ADC0816CCJ National Semiconductor, ADC0816CCJ Datasheet - Page 8

• Manufacturer Part Number: ADC0816CCJ
• Description: 8-Bit P Compatible A/D Converters with 16-Channel Multiplexer
• Manufacturer: National Semiconductor

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Typical Performance Characteristics
TRI-STATE Test Circuits and Timing Diagrams
Applications Information
OPERATION
1.0 RATIOMETRIC CONVERSION
The ADC0816, ADC0817 is designed as a complete Data
Acquisition System (DAS) for ratiometric conversion sys-
tems. In ratiometric systems, the physical variable being
measured is expressed as a percentage of full-scale which is
not necessarily related to an absolute standard. The voltage
input to the ADC0816 is expressed by the equation
FIGURE 6. Comparator I
(V
CC
= V
REF
= 5V)
IN
vs V
DS005277-18
IN
FIGURE 8.
8
V
V
V
D
D
D
IN
fs
Z
X
MAX
MIN
= Zero voltage
= Full-scale voltage
= Data point being measured
= Input voltage into the ADC0816
= Minimum data limit
= Maximum data limit
FIGURE 7. Multiplexer R
(V
CC
= V
REF
= 5V)
ON
vs V
DS005277-19
IN
DS005277-10
DS005277-9
(1)