Original Part
Alternative Part
1. OP279GRUZ-REEL Substitution Conclusion
The OP279GRUZ-REEL is not a suitable direct replacement for the TS972IPT. The key differences are as follows: First, the OP279 is a buffer amplifier, which provides no voltage gain and is intended solely for impedance matching or signal isolation, whereas the TS972IPT is a general-purpose operational amplifier capable of flexible gain configuration. Second, the OP279 has a higher minimum operating voltage (4.5V), making it incompatible with the TS972IPT's low-voltage applications down to 2.7V. Third, its output current is relatively low (50mA), offering only half the drive capability of the original part. Fourth, its input offset voltage (4mV) and bias current (300nA) are significantly higher, which may degrade DC accuracy. Unless the application strictly requires unity-gain buffering at a higher supply voltage, the OP279 cannot be used as a substitute.
2. TL972IPW Substitution Conclusion
The TL972IPW presents a high degree of feasibility for direct substitution. Both devices are standard general-purpose op-amps with closely matched key parameters: each has a gain-bandwidth product of 12MHz, identical input bias current and offset voltage specifications, and both support rail-to-rail output. Only two minor differences exist: first, the TL972IPW offers a slightly higher slew rate (5V/µs), providing marginally better dynamic response—a positive improvement. Second, its output current is somewhat lower (80mA vs. 100mA), though still sufficient for most medium-to-low load drive requirements. Additionally, the TL972IPW’s supply voltage range (2.7V to 12V) fully covers and slightly exceeds that of the original part. Under non-extreme current load conditions, it can be directly substituted with equivalent performance.
Analysis ID: 06C7-11E9000
Based on part parameters and for reference only. Not to be used for procurement or production.
SkyChip © 2026, Email: sales@skychip.com