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ADC0800PD Datasheet(数据表) 5 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor.
部件型号  ADC0800PD
说明  ADC0800 8-Bit A/D Converter
下载  10 Pages
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制造商  NSC [National Semiconductor (TI)]
网页  http://www.national.com
标志 

 
 5 page
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Application Hints (Continued)
ZERO AND FULL-SCALE ADJUSTMENT
Zero Adjustment
This is the offset voltage required at the
bottom of the R-network (pin 5) to make the 11111111 to
11111110 transition when the input voltage is
LSB (20
mV for a 1024V scale) In most cases this can be accom-
plished by havinga1kX pot on pin 5 A resistor of 475X
can be used as a non-adjustable best approximation from
pin 5 to ground
Full-Scale Adjustment
This is the offset voltage required
at the top of the R-network (pin 15) to make the 00000001
to 00000000 transition when the input voltage is 1
LSB
from full-scale (60 mV less than full-scale for a 1024V
scale) This voltage is guaranteed to be within g2 LSB for
the ADC0800 without adjustment In most cases adjust-
ment can be accomplished by having a 1 kX pot on pin 15
Typical Applications
General Connection
TLH5670 – 11
Hi-Voltage CMOS Output Levels
0V to 10V VIN range
0V to 10V output levels
TLH5670 – 12
Ratiometric Input Signal with Tracking Reference
TLH5670 – 4
5




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