INA849DGKR

Instrumentation, Op Amps, Buffer Amps Overview

The INA849DGKR is an ultra-low-noise instrumentation amplifier in an 8-pin VSSOP package. It features a 1-nV/√Hz input voltage noise, 28-MHz bandwidth at unity gain, and 35-V/µs slew rate. The device operates on single supplies from 8 V to 36 V or dual supplies of ±4 V to ±18 V. Gain is adjustable from 1 to 10,000 via a single external resistor. It offers low offset voltage (35 µV max) and drift (0.4 µV/°C max), with a specified temperature range of –40°C to +125°C.

Instrumentation, Op Amps, Buffer Amps Feature Summary

• Ultra-low noise performance optimized for high-resolution systems
• Precision super-beta input transistors providing low bias current
• Current-feedback topology enabling wide bandwidth at higher gains
• Adjustable gain setting using a single external resistor

Instrumentation, Op Amps, Buffer Amps Applications

• Analog input modules
• Microphone preamplifiers
• Electrocardiogram (ECG) circuits
• Process analytics sensors

Instrumentation, Op Amps, Buffer Amps Procurement Notes

Verify the DGK suffix corresponds to the 8-pin VSSOP package configuration. Confirm that the specific revision level matches the required production data status. Ensure supply voltage limits and thermal resistance parameters align with the target application's power dissipation requirements before finalizing procurement.

Instrumentation, Op Amps, Buffer Amps Selection Notes

Select this component when system design demands minimal input-referred voltage noise combined with high-speed signal processing capabilities. The wide common-mode input range and flexible gain settings make it suitable for interfacing with various sensor types. Consider the VSSOP package size constraints and thermal management needs associated with the specified operating temperature range.

Instrumentation, Op Amps, Buffer Amps Part Context

This part belongs to Texas Instruments' family of precision instrumentation amplifiers designed for demanding measurement applications. The INA849 specifically targets scenarios requiring both high accuracy and fast signal settling times. It complements other devices in the series by offering superior noise performance and bandwidth characteristics within a compact surface-mount footprint.

Instrumentation, Op Amps, Buffer Amps Replacement Considerations

INA849DR

Instrumentation, Op Amps, Buffer Amps FAQ

How is the gain of the INA849 configured?

Gain is set by a single external resistor connected between pins 2 and 3, allowing values from 1 to 10,000.

What is the input common-mode voltage range?

The linear input range extends within 2.5 V of both power supplies across the full operating voltage range.