28128 Parallax Inc, 28128 Datasheet - Page 143

• Manufacturer Part Number: 28128
• Description: KIT BASIC ANALOG/DIGI PARTS ONLY
• Manufacturer: Parallax Inc

Specifications of 28128

• Accessory Type: ADC, DAC
• Product: Microcontroller Accessories
• For Use With/related Products: BASIC Stamp® 2 and Board of Education
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Figure 7-9 indicates that the buffer is doing its job.
P8
10 k
Ω
Figure 7-8: PWM DAC with Op-amp Buffer and a Load
Vss
1 µF
Vdd
Vss
A
LM358
Vss
470
LED
Ω
Vss
2
4
3
Vdd
Vin(+)
GND
Vin(-)
ADC0831
8
Vdd
Vref
Figure 7-9
Debug Terminal
Output for Program
Listing 7.1 With a
Buffered LED
Circuit for a Load.
CLK
5
/CS
D0
1
7
6
P0
P1
P2