OPA743NA/3KG4

Instrumentation, Op Amps, Buffer Amps Overview

The OPA743NA/3KG4 is a single-channel CMOS operational amplifier from the OPA743 series, manufactured by Texas Instruments. It features rail-to-rail input and output capabilities with a gain-bandwidth product of 7 MHz and a slew rate of 10 V/us. The device operates on supply voltages ranging from 3.5 V to 12 V (single) or ±1.75 V to ±6 V (dual), consuming 1.1 mA of operating current. Key electrical specifications include an input bias current of 10 pA, input offset voltage of 7 mV, common-mode rejection ratio of 84 dB, and input voltage noise density of 30 nV/sqrt Hz. It provides 20 mA output current per channel and functions within a temperature range of -40°C to +85°C.

Instrumentation, Op Amps, Buffer Amps Feature Summary

• CMOS architecture enabling low power consumption and high input impedance
• Rail-to-rail input and output for maximum dynamic range in single-supply applications
• Wideband performance with 7 MHz gain-bandwidth product and 10 V/us slew rate

Instrumentation, Op Amps, Buffer Amps Applications

• Signal conditioning circuits requiring wide bandwidth
• Single-supply data acquisition systems
• Active filter designs

Instrumentation, Op Amps, Buffer Amps Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm RoHS compliance status and check for moisture sensitivity level requirements during storage and handling. Ensure the specific suffix matches design requirements as packaging variations may exist. Validate that the part meets all environmental and regulatory standards applicable to the target deployment region before final procurement decisions.

Instrumentation, Op Amps, Buffer Amps Selection Notes

Select this component when rail-to-rail I/O and moderate bandwidth are required in a compact SOT-23-5 package. Compare against the OPA743NA/3K regarding suffix differences if function remains identical. Consider the 1.1 mA supply current and 7 mV offset voltage for precision applications. Evaluate thermal performance within the specified -40°C to +85°C operating range for system integration.

Instrumentation, Op Amps, Buffer Amps Part Context

This device belongs to the OPA743 family of wideband amplifiers. It shares architectural similarities with other members like the OPA743NA/3K but carries the G4 suffix indicating specific manufacturing or compliance attributes. The component is designed for general-purpose analog signal processing tasks where size and power efficiency are critical constraints alongside signal integrity.

Instrumentation, Op Amps, Buffer Amps Replacement Considerations

The OPA743NA/3K is listed as a recommended alternative by the manufacturer. Verify functional equivalence and pin compatibility before substitution. Other OPA743 variants may offer different packaging or minor parameter shifts.