375949792AN_712_0| Application Note
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AN-712 APPLICATION NOTE
AD5228 Evaluation Kit for the 32-Position, Push Button, Up/Down Control Digital Potentiometer
by Alan Li
4 STEPS TO EVALUATION KIT SETUP 1. Apply 2.7 V to 5 V between VDD and AGND. 2. Leave jumper JPPRE open for midscale preset; connect JPPRE jumper for zero-scale preset. 3. Press push-button S1 for increment or S2 for decrement. 4. Measure the resistance across W2 and B2.
Note: A dual op amp (AD822B) and 2.5 V reference (ADR03) are provided and can be used with the AD5228 for many general-purpose building blocks circuits. See the Applications section.The evaluation board can also be used for the AD5227, a 64-step up/down control digital potentiometer.
Figure 1. Evaluation Kit Setup
REV. 0
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