INA851RGTR

Instrumentation, Op Amps, Buffer Amps Overview

The INA851RGTR is a fully differential instrumentation amplifier from Texas Instruments, housed in a 16-pin VQFN package. It operates on single supplies of 8 V to 36 V or dual supplies of ±4 V to ±18 V. The device features a typical input offset voltage of 10 µV and low noise density of 3.2 nV/√Hz. Gain is programmable from 0.2 to 10,000 using an external resistor, with output stage gain selectable at 0.2 or 1. It includes integrated output clamping and overvoltage protection up to ±40 V beyond the supply rails.

Instrumentation, Op Amps, Buffer Amps Feature Summary

• Fully differential outputs optimized for driving high-performance analog-to-digital converters
• Integrated output clamping circuitry to protect downstream devices from overdrive damage
• Input overvoltage protection capable of withstanding voltages up to ±40 V beyond the power-supply rails
• Programmable gain range utilizing a single external resistor combined with selectable output attenuation

Instrumentation, Op Amps, Buffer Amps Applications

• Analog input modules
• Electrocardiogram (ECG) systems
• Flow transmitters
• Oscilloscopes (DSO)
• Semiconductor test equipment

Instrumentation, Op Amps, Buffer Amps Procurement Notes

Verify the specific ordering suffix matches the required tape-and-reel packaging configuration. Confirm that the thermal pad connection aligns with the PCB layout requirements for the 16-pin VQFN package. Ensure supply voltage ranges and common-mode voltage levels are within the specified operational limits before integration.

Instrumentation, Op Amps, Buffer Amps Selection Notes

Select this component when driving fully differential ADCs requiring high precision and wide dynamic range. Consider the internal clamping feature if protecting sensitive downstream inputs is critical. Evaluate the gain setting options against the required signal bandwidth and noise performance specifications for the target application environment.

Instrumentation, Op Amps, Buffer Amps Part Context

This part belongs to the INA851 family of precision instrumentation amplifiers. It is distinguished by its industry-first fully differential output architecture among high-precision amps in this class. The RGTR suffix indicates the reel-packaged version of the standard INA851 device.

Instrumentation, Op Amps, Buffer Amps Replacement Considerations

INA851RGTT is the tray-packaged equivalent of this component.