TPA9361-SO1R

Overview

The TPA9361-SO1R is a precision difference amplifier manufactured by 3PEAK, designed for high-accuracy signal conditioning in single-supply applications. It features a fixed gain of 1 V/V and operates within a supply voltage range of 4.5 V to 36 V. Key electrical specifications include a maximum offset voltage of ±300 μV, a gain error of 0.05% (max), and a bandwidth of 3 MHz with a slew rate of 5 V/μs. The device offers exceptional common-mode rejection ratio (CMRR) of 100 dB typical and supports an operating temperature range from −40°C to 125°C.

Feature Summary

• Fixed gain configuration of 1 V/V with on-chip trimmed resistors for excellent accuracy.
• Extended common-mode voltage range exceeding supply rails for single-supply flexibility.
• High common-mode rejection ratio (CMRR) of 100 dB typical.
• Integrated EMI enhancement and over-temperature protection mechanisms.

Applications

• Precision instrumentation systems
• Industrial control circuits
• Audio signal processing
• Building block for custom precision amplifier designs

Procurement Notes

Verify the specific part number suffix against official 3PEAK documentation to ensure correct package type and tape-and-reel quantity. Confirm that the ordering information matches the required operating temperature range and environmental compliance standards before finalizing procurement plans.

Selection Notes

Select this component when a fixed unity-gain difference amplifier with high CMRR is required. Ensure the application demands a wide common-mode input range that exceeds the supply rails. Verify that the 3 MHz bandwidth and 5 V/μs slew rate meet the dynamic signal requirements of the target circuit design.

Part Context

This device belongs to the TPA936x series of precision difference amplifiers from 3PEAK. It shares the SOP8 package and general architecture with the TPA9363 variant, which differs primarily in its fixed gain setting of 0.48 V/V. Both parts are designed for robust performance in industrial and instrumentation environments.

Replacement Considerations

The TPA9363-SO1R is a related part within the same family but provides a different fixed gain of 0.48 V/V instead of 1 V/V. Direct substitution requires verifying if the system gain requirements accommodate this change. No other cross-model substitutes are confirmed in the provided documentation.

FAQ

What is the maximum supply voltage supported by the TPA9361-SO1R?

The absolute maximum supply voltage is 36 V, with recommended operating conditions supporting up to 36 V in single-supply mode or ±18 V in dual-supply mode.

How does the common-mode input range compare to the supply rails?

The common-mode range exceeds the supply voltage rails, allowing the device to handle signals well beyond the positive and negative supply limits.

What is the typical Common-Mode Rejection Ratio (CMRR) at room temperature?

The typical CMRR is 100 dB when the common-mode voltage is between −30 V and 27 V at 25°C.