INA821ID

Instrumentation, Op Amps, Buffer Amps Overview

The INA821ID is a single-channel instrumentation amplifier from Texas Instruments, designed for high-bandwidth applications. It features a gain bandwidth product of 4.7 MHz and an input voltage noise density of 7 nV/√Hz. The device operates within a supply voltage range of 4.5 V to 36 V and supports a wide operating temperature range from -40°C to +85°C. Packaged in an 8-SOIC (0.154", 3.90mm Width) surface-mount package, it utilizes BiCOM technology. Key electrical specifications include a common-mode rejection ratio of 120 dB and a slew rate of 1 V/µs.

Instrumentation, Op Amps, Buffer Amps Feature Summary

• High bandwidth performance suitable for fast signal processing
• Low input voltage noise density for precision measurements
• Wide single-supply or dual-supply voltage operation capability

Instrumentation, Op Amps, Buffer Amps Applications

• Medical imaging systems requiring high-speed data acquisition
• Industrial process control with high-frequency signals
• Test and measurement equipment demanding low noise

Instrumentation, Op Amps, Buffer Amps Procurement Notes

Verify the specific suffix against official datasheets to confirm package type and temperature range. Ensure compatibility with existing PCB footprints for SOIC-8 packages. Confirm RoHS compliance status through manufacturer documentation before integration into regulated products.

Instrumentation, Op Amps, Buffer Amps Selection Notes

Select this component when both high bandwidth and low noise are critical requirements. Compare against standard instrumentation amplifiers if higher CMRR or lower power consumption is prioritized over speed. Validate that the 4.7 MHz bandwidth meets system signal frequency needs without excessive filtering.

Instrumentation, Op Amps, Buffer Amps Part Context

Part of the INA821 family, this device bridges the gap between general-purpose op-amps and specialized instrumentation amplifiers. It offers integrated gain setting resistors, simplifying circuit design compared to discrete three-op-amp configurations while maintaining superior performance metrics for dynamic signals.

Instrumentation, Op Amps, Buffer Amps Replacement Considerations

Check for direct pin-compatible upgrades within the INA82x series. Verify if alternative models offer improved CMRR or lower bias current if those parameters become limiting factors in the specific application environment.