KA324A

Overview

The KA324A is a quad operational amplifier manufactured by onsemi, housed in a 14-pin DIP package. It operates within a supply voltage range of 3 V to 32 V and features true differential inputs that include the negative supply rail. Key electrical parameters include an input bias current of 250 nA, an input offset voltage of 7 mV, and a power dissipation of 1.31 W. The device provides a voltage gain of 100 dB, a slew rate of 10 V/µs, and a power supply rejection ratio (PSRR) of 65 dB. Each channel can deliver up to 40 mA of output current, with a total quiescent current of approximately 1.2 mA.

Feature Summary

• Features true differential input stages that allow common-mode signals to extend to the negative supply voltage, eliminating the need for external biasing components in many single-supply applications.
• Includes short-circuit protection on outputs to enhance device reliability during fault conditions.
• Incorporates internal frequency compensation to ensure stability without requiring external capacitors.
• Provides ESD clamps on inputs to increase ruggedness while maintaining normal device operation.

Applications

• DC gain applications
• Integrators
• Summing amplifiers

Procurement Notes

Verify the specific suffix 'A' indicates tighter input offset voltage specifications compared to standard variants. Confirm the package type matches the required PCB footprint, as this component is available in multiple form factors including PDIP and SOIC. Ensure the operating temperature range aligns with the commercial grade specification of 0°C to 70°C for the intended environment.

Selection Notes

Select this component when a low-cost, general-purpose quad op-amp is required for single-supply systems. It is suitable for applications where moderate precision is acceptable but high-speed performance is not critical. Consider the 40 mA output drive capability if driving low-impedance loads directly.

Part Context

This part belongs to the LM324 series of single-supply quad operational amplifiers. It shares the same pinout and basic functionality with other members like the LM324 and LM2902, offering industry-standard compatibility. The 'KA' prefix typically denotes a specific regional or manufacturing variant within the broader family.

Replacement Considerations

• LM324DR2G
• LM324ANG