AMC3302DWER

Overview

The AMC3302DWER is a single-channel precision current sensing amplifier manufactured by Texas Instruments. It features a +/-50-mV input range and a fixed gain of 41 V/V, designed for high-accuracy applications. The device utilizes capacitive isolation technology to provide an insulation voltage of 4250 Vrms. Key electrical parameters include a gain bandwidth product of 340 kHz, a common-mode rejection ratio of -101 dB, and an input offset voltage of 50 uV. It operates on a power supply between 3 V and 5.5 V with a maximum power dissipation of 231 mW. The component is housed in a SOIC-16 package and supports an operating temperature range from -40 C to +125 C.

Feature Summary

• Provides galvanic isolation via capacitive technology for robust noise immunity in high-voltage environments.
• Delivers high precision with low input offset voltage and minimal gain error for accurate signal conditioning.
• Features a wide common-mode rejection ratio to maintain signal integrity under varying common-mode conditions.

Applications

• Precision current sensing in motor drive systems
• High-side current monitoring in industrial automation
• Power supply feedback loops requiring isolated measurement

Procurement Notes

Verify the specific suffix 'WER' corresponds to the required reel packaging configuration when ordering. Confirm that the SOIC-16 footprint matches the target PCB layout dimensions. Ensure the design accounts for the specified humidity sensitivity classification during storage and assembly processes. Cross-reference the datasheet revision date to guarantee compatibility with existing design specifications.

Selection Notes

Select this component when a fixed gain of 41 V/V is required for signals within the +/-50-mV range. Consider the 4250 Vrms isolation rating for safety-critical applications. Evaluate the 340 kHz bandwidth against the system's dynamic response requirements. Compare the 29.5 mA supply current against power budget constraints relative to other isolation amplifier options.

Part Context

This part belongs to the AMC3302 series of precision current sensing amplifiers. It shares the same core architecture as the AMC3301 but differs in input range and gain settings. The DWE suffix indicates the SOIC-16 tube package variant, while the R denotes reel packaging. It serves as a specialized solution for isolating low-level differential signals in noisy power electronics environments.

Replacement Considerations

Direct substitutes may include the AMC3301EVM or similar devices within the AMC33xx family, provided the gain and input range specifications align with the application requirements. Verify pinout compatibility before substitution.

FAQ

What is the isolation type used in the AMC3302DWER?

The AMC3302DWER uses capacitive isolation technology to achieve its 4250 Vrms insulation voltage rating.

Does the AMC3302DWER have a shutdown function?

No, the AMC3302DWER does not feature a shutdown mode; it operates continuously within its specified temperature range.