INA148UA/2K5G4

Overview

The INA148UA/2K5G4 is a precision difference amplifier manufactured by Texas Instruments, designed for applications requiring high common-mode voltage rejection. It features a gain of 10 V/V and supports a common-mode input voltage range up to ±200V. The device operates on a single supply voltage ranging from 2.7V to 36V, with a maximum supply voltage of 36V. Key electrical specifications include a gain bandwidth product of 100 kHz, a slew rate of 1 V/µs, and a typical CMRR of 70 dB. Input offset voltage is typically 1 mV, and the quiescent current is 260 µA. It functions within an operating temperature range of -55°C to +125°C.

Feature Summary

• Supports high common-mode input voltages up to ±200V without external components
• Provides fixed unity-gain configuration for simplified circuit design
• Operates reliably across extended industrial temperature ranges

Applications

• Industrial process control signal conditioning
• Medical equipment isolation interfaces
• High-voltage sensor signal amplification

Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm RoHS compliance status and check for obsolescence notices, as availability may be limited. Ensure storage conditions meet humidity sensitivity requirements to prevent package degradation prior to assembly.

Selection Notes

Select this component when differential signals require amplification in the presence of high common-mode potentials. It is suitable for designs needing a fixed gain of 10 V/V without external resistors. Consider thermal management for operation near the upper temperature limit.

Part Context

This part belongs to the INA148 family of difference amplifiers. It shares functional similarities with the INA148UA but includes specific reel packaging suffixes indicating tape-and-reel delivery format. It complements other instrumentation amplifiers like the INA118 series, offering higher common-mode voltage tolerance at the cost of lower CMRR.

Replacement Considerations

Direct substitutes include the INA148UA and INA148UAG4. Verify pin compatibility and electrical parameter alignment before substitution.