What the 12 kHz gain-bandwidth means for your signal chain
The Analog Devices LT1674IS#PBF is a quad general-purpose op-amp in the LT® series, built for continuous-time signal conditioning where the bandwidth ceiling is well below audio frequencies. Its 12 kHz gain-bandwidth product sets a practical closed-loop gain of 60 dB at 12 Hz or unity gain at 12 kHz — fine for DC measurement, thermocouple amplification, or low-frequency sensor buffering, but not for audio or high-speed data acquisition.
1.9 µA per channel — the power budget decider
Each of the four amplifiers draws 1.9 µA of supply current. That is the headline spec for battery-powered or loop-powered designs: the entire quad consumes under 8 µA quiescent. The trade-off is the 12 kHz GBW — you trade speed for micropower, not the other way. Input bias current is 25 pA, and input offset voltage is 200 µV, both adequate for precision DC work where the signal source impedance is moderate.
Supply span from 2.2 V to 36 V — single-supply flexibility
The LT1674IS#PBF operates from a supply span as low as 2.2 V up to 36 V. That covers both a single lithium-ion cell (3.0 V to 4.2 V) and a 24 V industrial bus without an extra regulator. The rail-to-rail output means the output can swing close to the rails, which is useful when running from a 3.3 V ADC reference or a 5 V logic supply.