INA137UA/2K5G4

Overview

The INA137UA/2K5G4 is a high-precision difference amplifier manufactured by Texas Instruments. It features an e-trim architecture for enhanced accuracy and wide bandwidth capabilities. The device operates with a single supply voltage ranging from 6 V to 36 V, or dual supplies of ±3 V to ±18 V. Key electrical parameters include a gain bandwidth product of 10 MHz, a slew rate of 10 V/µs, and an input offset voltage of 1 mV. It provides fixed gain options of 0.5 or 2, with a common-mode rejection ratio of 90 dB at unity gain. The component is housed in an 8-pin SOIC package and supports an operating temperature range from -40°C to +85°C.

Feature Summary

• Integrated e-trim technology ensures high precision and stable performance over time.
• Wide bandwidth design supports high-speed signal processing applications.
• Fixed internal gain configurations simplify circuit design without external resistors.

Applications

• Audio differential line receivers
• Sensor signal conditioning
• Data acquisition systems

Procurement Notes

Verify the specific suffix G4 indicates lead-free compliance and RoHS adherence as per Texas Instruments standards. Confirm the UA package variant matches the required surface-mount footprint for PCB layout. Ensure the reel quantity aligns with production needs. Cross-reference the manufacturer part number against official TI documentation to validate authenticity and current status before procurement.

Selection Notes

Select this component when a fixed-gain difference amplifier is required for precise signal extraction. The 10 MHz bandwidth suits applications needing faster response than standard low-frequency amplifiers. Consider the 1 mV offset voltage for DC accuracy requirements. The wide common-mode voltage range allows operation in high-voltage environments relative to ground.

Part Context

The INA137 belongs to the family of high-precision difference amplifiers from Texas Instruments. It is designed to replace discrete resistor networks, offering improved matching and thermal tracking. The device integrates laser-trimmed resistors on-chip to achieve high common-mode rejection ratios. This integration reduces board space and simplifies assembly compared to traditional op-amp based difference amplifier circuits.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided source material.