Dual op-amp with FET inputs in a through-hole DIP
The CA3240AEZ: It operates from a single or split supply spanning 4V to 36V, drawing 8mA per channel. The 10 pA typical input bias current reflects a FET-input stage, making it suitable for high-impedance sources such as photodiode amplifiers, pH probes, and precision integrators.
Supply voltage and output drive — sizing the rails
The 4V minimum supply span lets this part run on a single 5V rail common in industrial logic systems, while the 36V maximum covers ±15V bipolar supplies for analog front-ends. At 8mA per channel quiescent, the total supply draw for both amplifiers is 16mA, which is moderate: not micropower, but not a burden on a 500mA linear regulator either.
For BOM lines that need a through-hole dual op-amp with FET inputs and a 4.5 MHz GBW, this part is a clean fit for new production and repair stock.