KA2904D

Overview

The KA2904D is a dual operational amplifier manufactured by onsemi. It consists of two independent, high-gain amplifiers with internal frequency compensation. The device is designed for single power supply operation over a wide voltage range. Key electrical characteristics include a large DC voltage gain of 100 dB and a unity-gain bandwidth of 1.1 MHz. It features low input bias current of 20 nA and low input offset current of 2 nA. The input common-mode voltage range includes the negative rail, allowing ground-referenced inputs.

Feature Summary

• Internal frequency compensation eliminates external component requirements
• Single-supply operation capability with ground-inclusive input range
• Low power supply drain largely independent of supply voltage magnitude

Applications

• Transducer amplifiers
• DC gain blocks
• Electronic interfaces in logic systems

Procurement Notes

Verify the manufacturer marking and date code against official onsemi documentation to confirm authenticity. Ensure the package type matches the required PCB footprint. Check for RoHS compliance status if environmental regulations apply to the end product. Confirm availability through authorized distribution channels to avoid counterfeit components.

Selection Notes

Select this component when a low-power, single-supply dual op-amp is required. It is suitable for applications where the input signal swings to ground. Consider the 1.1 MHz bandwidth for moderate-speed signal processing. Verify that the 100 dB open-loop gain meets the precision requirements of the specific circuit design.

Part Context

The KA2904D belongs to the family of low-power dual operational amplifiers. It shares functional similarities with other industry-standard dual op-amps but is optimized for single-supply environments. The device is commonly used in automotive and industrial control systems due to its stability and low current consumption characteristics.

Replacement Considerations

Check datasheets for pin-compatible alternatives such as LM2904 or LM358 variants. Ensure replacement parts match the supply voltage range and output swing specifications. Verify that the replacement offers equivalent bandwidth and gain performance for the intended application.