OPA251PA

Instrumentation, Op Amps, Buffer Amps Overview

The OPA251PA is a single-channel, precision operational amplifier from the OPAx251 family, designed for high-power supply applications. It features micro power consumption with a quiescent current of 27µA at ±15V and 38µA over temperature. The device offers low offset voltage (±250µV max) and drift (±0.6µV/°C), high common-mode rejection (124dB), and high open-loop gain (128dB). It operates on single supplies from 2.7V to 36V or dual supplies from ±1.35V to ±18V. The output swings within 50mV of the rails, and it includes external trim pins for offset adjustment.

Instrumentation, Op Amps, Buffer Amps Feature Summary

• Micro power operation optimized for battery-powered and portable applications
• Rail-to-rail output capability with swing within 50mV of supply rails
• Low offset voltage and drift performance suitable for precision measurements
• External offset voltage trim connections available for nulling adjustments

Instrumentation, Op Amps, Buffer Amps Applications

• Battery operated instruments
• Portable devices
• Medical instruments
• Test equipment

Instrumentation, Op Amps, Buffer Amps Procurement Notes

Verify the specific ordering suffix against the manufacturer's latest documentation to confirm package type and lead finish. Ensure the component meets RoHS compliance requirements for your region. Confirm that the operating temperature range aligns with your system specifications. Check for any recent product change notifications regarding manufacturing sites or materials.

Instrumentation, Op Amps, Buffer Amps Selection Notes

Select this component when low power consumption is critical alongside precision requirements. The OPAx251 series is specifically trimmed for ±15V operation but functions across the full voltage range. Consider the external trim pins if system-level offset nulling is required without adding external circuitry. Verify capacitive load stability based on the intended gain and supply voltage configuration.

Instrumentation, Op Amps, Buffer Amps Part Context

The OPA251PA belongs to the OPAx251 family, which is distinct from the OPAx241 series optimized for 5V supplies. Both families share similar electrical characteristics but differ in laser trimming targets. The 'P' suffix indicates an 8-pin PDIP package. This part is part of a broader portfolio including dual (OPA2251) and quad (OPA4251) variants.

Instrumentation, Op Amps, Buffer Amps Replacement Considerations

Direct substitutes include other members of the OPAx251 family such as OPA2251PA (dual channel) or OPA4251PA (quad channel) if pin compatibility allows. Single-channel alternatives like OPA241PA may be considered if the application operates closer to 5V, though offset performance will differ due to different trimming targets.