1. Input Characteristics (Accuracy & Leakage) • ADA4091: Extremely low input bias current (50 nA) and input offset voltage (45 µV). • LM7322: Input bias current (1.1 µA) is 22× higher; input offset voltage (700 µV) is over an order of magnitude greater. The ADA4091 is preferred for high‑impedance signal sources (e.g., photodiodes, pH electrodes) or high‑precision DC amplification where error sources must be minimized. The LM7322’s input errors are acceptable in most general‑purpose applications but unsuitable for circuits demanding tight DC accuracy and low input leakage. 2. Speed & Bandwidth (Dynamic Performance) • ADA4091: Low bandwidth (1.27 MHz) and low slew rate (0.46 V/µs). • LM7322: High bandwidth (20 MHz) and high slew rate (18 V/µs), both more than 15× those of the ADA4091. The LM7322 suits audio, intermediate‑frequency signals, or applications requiring fast step response. The ADA4091 is only suitable for low‑frequency or DC signal processing; using it in high‑speed circuits would cause severe distortion. 3. Power Consumption & Output Drive Capability • ADA4091: Very low quiescent current (200 µA per channel) but limited output current (20 mA). • LM7322: Higher quiescent current (2.5 mA per channel) but strong output drive capability (100 mA). The ADA4091 is optimized for battery‑powered, low‑power equipment. The LM7322 can directly drive lower‑impedance loads (e.g., coils, long cables) but consumes more static power. 4. Reliability Grade • LM7322: AEC‑Q100 qualified, automotive‑grade. • ADA4091: Standard industrial‑grade. For automotive or high‑reliability designs, the LM7322 is necessary. For general industrial or commercial applications, this difference does not pose a selection barrier. Summary: The ADA4091 is a micropower precision amplifier, whereas the LM7322 is a general‑purpose high‑speed driver amplifier. If the original circuit relies on the ADA4091’s high input accuracy and low‑power characteristics, substituting the LM7322 may lead to performance shortfalls. If the circuit only requires a rail‑to‑rail general‑purpose amplifier with speed demands, the LM7322 represents a high‑performance alternative.