TPA9151B-SO1R

Instrumentation, Op Amps, Buffer Amps Overview

The TPA9151B-SO1R is a general-purpose unity-gain difference amplifier designed for precision signal conditioning within a ±275 V common voltage range. It operates on a supply voltage of 4.5 V to 36 V (±2.25 V to ±18 V) and features an operating temperature range from −40°C to 125°C. Key electrical specifications include a maximum offset voltage of ±1 mV, a gain error of 0.03% (max), a bandwidth of 500 kHz, and a slew rate of 10 V/μs. The device integrates trimmed on-chip resistors to ensure high CMRR and excellent gain accuracy.

Instrumentation, Op Amps, Buffer Amps Feature Summary

• Integrates on-chip matching resistors with high-precision amplifiers to achieve excellent gain accuracy, linearity, and CMRR over the operating temperature range.
• Features enhanced EMI performance capabilities suitable for demanding industrial environments.
• Provides two reference input pins (REFA and REFB) allowing flexible configuration for signal offset adjustments.

Instrumentation, Op Amps, Buffer Amps Applications

• Current sense applications involving high common voltage signals
• Battery voltage monitoring systems
• Industrial control circuitry

Instrumentation, Op Amps, Buffer Amps Procurement Notes

Verify that the specific ordering suffix matches the required package type and tape/reel quantity. Confirm the component meets RoHS compatibility and halogen-free requirements as defined by the manufacturer's green product standards. Ensure the selected variant aligns with the necessary reference pin configuration for your design implementation.

Instrumentation, Op Amps, Buffer Amps Selection Notes

Select this component when galvanic isolation is not required but high common-mode voltage handling is necessary. The TPA9151B variant specifically offers optimized CMRR characteristics for certain common-mode ranges compared to standard versions. Evaluate the need for dual reference inputs versus single reference configurations based on system offset requirements.

Instrumentation, Op Amps, Buffer Amps Part Context

This part belongs to the TPA9151/TPA9152 family of 275-V common voltage difference amplifiers manufactured by 3PEAK. The TPA9151B is a specific variant within this series, distinguished by its reference pin configuration and performance characteristics. It serves as a cost-effective alternative to isolation amplifiers in applications where galvanic isolation is unnecessary.

Instrumentation, Op Amps, Buffer Amps Replacement Considerations

Direct substitutes within the same family include the TPA9151-SO1R and TPA9151A-SO1R. Verify functional equivalence regarding reference pin availability and CMRR specifications before substitution.