28176 Parallax Inc, 28176 Datasheet - Page 207
![KIT PARTS PROCESS CONTROL W/TEXT](/photos/8/99/89989/mfg_28176_sml.jpg)
28176
Manufacturer Part Number
28176
Description
KIT PARTS PROCESS CONTROL W/TEXT
Manufacturer
Parallax Inc
Datasheet
1.122-28176.pdf
(330 pages)
Specifications of 28176
Accessory Type
Process Control
Product
Microcontroller Accessories
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
For Use With/related Products
BASIC Stamp® 2 and Board of Education
Lead Free Status / RoHS Status
Lead free / RoHS Compliant, Contains lead / RoHS non-compliant
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How would the 0.7 V be set? One way would be to use a potentiometer that is adjusted
to 0.7 V as the input for V
the voltage range of interest.
Fortunately, the ADC0831 converter can directly perform the spanning and offsetting.
Consider the pin-out of this device as shown in Figure 6-12.
Up until now Vin(-) has been connected to Vss (0 V) and V
(5 V). These two inputs set the offset and span voltages over which to convert. If the
ADC0831’s Vin(-) is set to 0.7 V and Vref is set to 0.5 V, the ADC will convert the range
of 0.7 V to 1.2 V to a byte value of 0 to 255 respectively.
I2
. In both configurations we are setting the offset and span for
ref
Figure 6-12
ADC0831 Pin Out
has been connected to Vdd
Figure 6-11
Offset and Gain
using Differential
Configuration
DO NOT BUILD
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