AMC1300DWVR

Overview

The AMC1300DWVR is a precision isolated amplifier manufactured by Texas Instruments, designed for high-accuracy current sensing applications. It features a ±250-mV input range and a fixed gain of 8.2 V/V. The device provides galvanic isolation with an insulation voltage of 5000 Vrms and a 3dB bandwidth of 230 kHz. Key electrical parameters include a common-mode rejection ratio (CMRR) of 100 dB, a maximum input bias current of 24 uA, and an input offset voltage of 2 mV. It operates on a single supply voltage ranging from 4.5 V to 5.5 V, with typical quiescent currents of 5.9 mA and 7.2 mA. The component is housed in an 8-SOIC package and supports a differential output capable of sourcing up to 13 mA per channel.

Feature Summary

• Provides galvanic isolation between the input and output circuits to protect low-voltage side components from high-voltage transients.
• Delivers precise amplification of small differential input signals within a specified millivolt range for accurate measurement.
• Offers high common-mode rejection capability to suppress noise and interference present on the common-mode line.

Applications

• Precision current sensing in motor drives
• Current monitoring in power supplies
• Isolated signal conditioning in industrial automation systems

Procurement Notes

Verify the specific suffix 'DWVR' corresponds to the SOIC-8 package and tape-and-reel packaging configuration required for your assembly process. Confirm that the 5000 Vrms insulation rating meets the safety standards applicable to your target market. Ensure the operating temperature range of -40°C to +125°C aligns with your environmental specifications. Cross-reference the manufacturer part number with authorized distributors to ensure authenticity and traceability.

Selection Notes

Select this component when a fixed gain of 8.2 V/V is suitable for the signal amplitude. Consider the 230 kHz bandwidth limitation if higher frequency response is needed. Evaluate the 5.9 mA to 7.2 mA power consumption against system efficiency requirements. Compare the 100 dB CMRR against the noise environment of the application to determine if additional filtering is necessary.

Part Context

This device belongs to the AMC1300 series of isolated amplifiers from Texas Instruments. It is distinct from delta-sigma modulators like the AMC1306 or other variants such as the AMC1301, which may have different bandwidth or delay characteristics. The DWVR suffix indicates the specific package type and reel quantity, differentiating it from tube-packaged versions like the DWV.

Replacement Considerations

Check for AMC1300DWV as a potential alternative if tape-and-reel packaging is not strictly required. Verify compatibility with AMC1301DWVR only if the slightly lower bandwidth and different CMRR specifications are acceptable for the design.