OPA814DBVR

Instrumentation, Op Amps, Buffer Amps Overview

The OPA814DBVR is a unity-gain stable, high-precision voltage-feedback operational amplifier featuring a low-noise junction gate-field-effect transistor input stage. It provides a gain-bandwidth product of 250 MHz and a small-signal bandwidth of 600 MHz at unity gain. The device operates on a supply voltage ranging from 6 V to 12.6 V with a quiescent current of 16 mA. Key electrical characteristics include a maximum input offset voltage of 350 μV, an input bias current of 2 pA, and an input voltage noise density of 5.3 nV/√Hz. It is housed in a five-pin SOT-23 package.

Instrumentation, Op Amps, Buffer Amps Feature Summary

• Features a low-noise JFET input stage providing picoampere-level input bias current for high-impedance signal handling.
• Delivers wide dynamic range performance with a large-signal bandwidth of 200 MHz and a slew rate of 750 V/µs.
• Offers high DC precision with extremely low input offset voltage and minimal drift over temperature variations.
• Designed as a performance upgrade for legacy high-speed amplifiers while maintaining unity-gain stability.

Instrumentation, Op Amps, Buffer Amps Applications

• High-speed data acquisition front-ends
• Active probes for test equipment
• Optical communication modules
• Medical and chemical analyzers

Instrumentation, Op Amps, Buffer Amps Procurement Notes

Verify the specific DBV suffix indicates the SOT-23-5 package variant rather than the standard SOIC package. Confirm that the application environment supports the required 6 V to 12.6 V supply range. Ensure PCB layout accounts for the thermal resistance characteristics of the small outline transistor package to maintain reliability within the specified industrial temperature limits.

Instrumentation, Op Amps, Buffer Amps Selection Notes

Select this component when a combination of high speed and high precision is required for single-channel applications. It is suitable for designs needing a wide supply voltage range up to 12.6 V compared to lower-voltage alternatives. Consider the SOT-23 footprint constraints if space is limited, noting that it replaces larger packages like the SOIC in compact designs.

Instrumentation, Op Amps, Buffer Amps Part Context

This device belongs to the OPA814 family of high-speed operational amplifiers manufactured by Texas Instruments. It utilizes a proprietary complementary bipolar SiGe process to achieve its high-frequency performance. The OPA814 serves as a direct performance upgrade to the OPA656, offering improved slew rates and bandwidth while maintaining similar functional characteristics for high-speed signal processing.

Instrumentation, Op Amps, Buffer Amps Replacement Considerations

The datasheet identifies the OPA814 as a performance upgrade to the OPA656. Designers replacing the OPA656 should verify that the higher slew rate and bandwidth are compatible with existing circuit stability requirements.