Original Part
Digital Potentiometer 10k Ohm 1 Circuit 128 Taps I2C Interface SC-70-6
Alternative Part
Digital Potentiometer 10k Ohm 1 Circuit 128 Taps I2C Interface SC-70-6
Digital Potentiometer 100k Ohm 1 Circuit 128 Taps I2C Interface SC-70-6
1. AD5247BKSZ10-RL7 Substitution Conclusion
This device can serve as a direct replacement provided voltage conditions are satisfied, though careful attention must be paid to circuit adaptation for its configuration mode. The part is highly consistent with the original part in core functionality (10kΩ, 128 taps, I2C interface, package-compatible) and offers superior key performance specifications (a temperature coefficient of 45ppm/°C is significantly better than 150ppm/°C, and an equivalent series resistance of 75Ω outperforms 155Ω). The differences are as follows: First, its operating voltage range is 2.7V to 5.5V, which is higher than the original's starting voltage of 1.8V. It cannot operate in the ultra-low voltage range between 1.8V and 2.7V; therefore, it is not a viable substitute if the original system operates within this range. Second, its internal configuration is a rheostat, whereas the original is a potentiometer. In circuits requiring the wiper to function as a three-terminal voltage divider, minor external wiring adjustments are necessary, though full functionality can be achieved.
2. AD5247BKSZ100-1RL7 Substitution Conclusion
Direct substitution is not recommended. It may be cautiously evaluated only for specific applications where absolute resistance value is non-critical. The most fundamental difference between this part and the original is its nominal resistance of 100kΩ, which is ten times that of the original 10kΩ. In the vast majority of applications, this will directly alter the circuit's voltage division ratio, time constant, or bias current, causing system performance to deviate from the original design. Therefore, it is generally not a direct replacement. Although it is compatible in package, interface, and number of taps, and offers better temperature coefficient and equivalent series resistance performance, the order-of-magnitude difference in resistance is decisive. It might only be applicable where the original circuit has very loose tolerance for the absolute resistance value, or where it is used in a purely digital setting stage followed by a gain adjustment block. Its differences in voltage range and configuration mode are identical to those described for the AD5247BKSZ10-RL7 above.
Analysis ID: 1F8D-3A82000
Based on part parameters and for reference only. Not to be used for procurement or production.
SkyChip © 2026, Email: sales@skychip.com