1. AD5247BKSZ10-2RL7 Substitution Conclusion Direct substitution is not recommended. While both devices share the same interface, package, and resolution, three critical differences exist: First, the nominal resistance differs by an order of magnitude (10kΩ vs. 100kΩ). This will fundamentally alter the voltage divider ratio, current flow, and impedance matching characteristics of the circuit, necessitating a complete recalculation of surrounding component values. Second, the configuration modes differ (rheostat vs. potentiometer). If the original circuit utilizes the three-terminal structure (high-end, low-end, wiper) of a potentiometer for voltage division, the rheostat—which only supports a two-terminal variable resistance mode between the wiper and one end—cannot directly replicate the same function. Third, the minimum operating voltage is higher (2.7V vs. 1.8V), rendering it incompatible with low-voltage systems operating between 1.8V and 2.7V. Direct replacement is not viable unless the circuit design permits and is specifically adjusted to accommodate these discrepancies.