LM258ADGKR

Overview

The LM258ADGKR is a dual operational amplifier manufactured by Texas Instruments, belonging to the LM258A series. It features a gain-bandwidth product of 700 kHz and a slew rate of 300 mV/us. The device operates on a single supply voltage ranging from 3 V to 32 V, or dual supplies from ±1.5 V to ±16 V. Key electrical specifications include an input bias current of 80 nA, an input offset voltage of 3 mV, and a common-mode rejection ratio of 80 dB. Each channel provides an output current capability of 20 mA with a quiescent current of 350 uA. The component utilizes a VSSOP-8 surface-mount package and supports operation within a temperature range of -25°C to +85°C.

Feature Summary

• Dual-channel architecture providing two independent high-gain amplifiers in a compact form factor.
• Rail-to-rail output capability allowing signal swing close to both power supply rails.
• Internal frequency compensation ensures stability without requiring external components.

Applications

• General-purpose analog signal conditioning circuits
• Transducer amplification for sensor interfaces
• DC gain blocks in measurement systems

Procurement Notes

Verify the specific suffix 'DGKR' against the manufacturer's official datasheet to confirm the VSSOP-8 package type and tape-and-reel packaging configuration. Ensure the operating temperature range aligns with system requirements, as industrial variants may differ. Cross-reference the RoHS compliance status with current regulatory standards before finalizing procurement decisions.

Selection Notes

Select this component when a low-cost, general-purpose dual op-amp is required for applications not demanding high precision or wide bandwidth. The LM258ADGKR is suitable for designs where moderate input offset voltage and bias current are acceptable. Consider alternative packages if board space constraints require smaller footprints than VSSOP-8.

Part Context

This part belongs to the LM258 family of dual operational amplifiers, which are industry-standard devices known for their versatility and cost-effectiveness. The 'A' designation typically indicates improved specifications over the base LM258 model, such as tighter tolerance on input parameters. The DGKR suffix identifies the specific physical package and shipping format provided by Texas Instruments.

Replacement Considerations

LM358ADGKR: Pin-compatible alternative with similar electrical characteristics but potentially different noise and offset specifications.

FAQ

Does the LM258ADGKR support rail-to-rail output?

Yes, the datasheet specifies that the output voltage swings to within approximately 20 mV of the negative rail and can approach the positive rail under light loads.

What is the maximum supply voltage for this device?

The absolute maximum rating allows for a total supply voltage of up to 32 V, with individual rails limited to ±16 V.