OPA4191IPWR

Instrumentation, Op Amps, Buffer Amps Overview

The OPA4191IPWR is a quad precision operational amplifier from the OPAx191 family, manufactured by Texas Instruments. It features e-trim technology for low offset voltage and drift, rail-to-rail input and output capabilities, and high common-mode rejection. The device operates on a wide supply range of 4.5 V to 36 V with a quiescent current of 140 µA per amplifier. Key electrical parameters include a gain-bandwidth product of 2.5 MHz, a slew rate of 7.5 V/µs, and an input bias current of ±5 pA. It is housed in a 14-pin TSSOP package.

Instrumentation, Op Amps, Buffer Amps Feature Summary

• Features e-trim technology for ultra-low offset voltage and drift specifications.
• Supports rail-to-rail input and output operation across the full supply range.
• Includes EMI/RFI filtered inputs and differential input voltage range extending to the supply rails.
• Provides high capacitive load drive capability and robust performance in industrial environments.

Instrumentation, Op Amps, Buffer Amps Applications

• Analog input modules
• Mixed signal modules (AI, AO, DI, DO)
• Data acquisition systems
• Source measurement units
• Pressure transmitters

Instrumentation, Op Amps, Buffer Amps Procurement Notes

Verify the specific ordering suffix 'IPWR' corresponds to the TSSOP-14 package and reel packaging configuration as defined in the manufacturer's documentation. Confirm that the component meets the required RoHS compliance standards and moisture sensitivity levels for your assembly process. Ensure the selected variant matches the exact pinout and thermal characteristics specified for the OPA4191 series.

Instrumentation, Op Amps, Buffer Amps Selection Notes

Select this component when high DC precision and low power consumption are required in a quad configuration. The rail-to-rail I/O and wide supply voltage range make it suitable for single-supply or dual-supply applications. Consider the low input bias current and high CMRR for sensitive sensor interfaces. Verify that the 2.5 MHz bandwidth meets the AC performance requirements of the target circuit design.

Instrumentation, Op Amps, Buffer Amps Part Context

The OPA4191IPWR belongs to the OPAx191 family of 36-V precision CMOS operational amplifiers. This family includes single (OPA191), dual (OPA2191), and quad (OPA4191) variants. All members share similar electrical characteristics, including e-trim accuracy and rail-to-rail operation, allowing for flexible design scaling while maintaining consistent performance metrics across different channel counts.

Instrumentation, Op Amps, Buffer Amps Replacement Considerations

Direct functional substitutes within the same family include OPA191 for single-channel and OPA2191 for dual-channel applications. For quad configurations, other packages such as SOIC-14 or WQFN-16 may be available depending on board space constraints. Verify pin compatibility and thermal performance when substituting between different package types.

Instrumentation, Op Amps, Buffer Amps FAQ

Does the OPA4191 support rail-to-rail input and output?

Yes, the OPA4191 features both rail-to-rail input and rail-to-rail output capabilities, allowing it to operate effectively with signals close to the supply rails.

What is the maximum supply voltage for the OPA4191?

The maximum supply voltage for the OPA4191 is 36 V, which can be provided as a single supply or split into dual supplies up to ±18 V.

Is the OPA4191 protected against electrostatic discharge?

Yes, the device includes ESD protection. It is rated at ±3000 V for the human-body model and ±1000 V for the charged-device model, ensuring robustness during handling and manufacturing.