ADM4073TWRJZ-REEL7

Overview

The ADM4073TWRJZ-REEL7 is a low-cost, high-side current-sense amplifier manufactured by Analog Devices Inc. It features a fixed voltage gain of 20 V/V and operates within a supply voltage range of 3 V to 28 V. The device supports a wide common-mode input range from 2 V to 28 V, independent of the supply voltage. Key electrical specifications include a typical supply current of 500 μA, a bandwidth of 1.8 MHz, and a common-mode rejection ratio of 90 dB. It provides full-scale accuracy of ±1.0% and functions reliably across an operating temperature range of −40°C to +125°C.

Feature Summary

• High-side current sensing with a wide common-mode voltage range independent of supply voltage
• Fixed internal gain configuration eliminating external resistor requirements
• Low power consumption suitable for battery-operated portable systems
• Automotive-grade reliability with extended temperature operation

Applications

• Cell phones and PDAs
• Notebook computers
• Portable battery-powered systems
• Smart battery packs and chargers
• Power management systems

Procurement Notes

Verify the specific suffix REEL7 indicates tape and reel packaging when sourcing components. Confirm that the part number corresponds to the 20 V/V gain variant (ADM4073T) rather than the 50 V/V or 100 V/V versions. Ensure compatibility with the 6-lead SOT-23 footprint during PCB layout review. Check for RoHS compliance status as indicated by the Z suffix in the ordering guide.

Selection Notes

Select this component when a fixed 20 V/V gain is required for high-side current monitoring applications. It is appropriate for designs needing a wide common-mode range up to 28 V without interrupting the ground path. Consider the 500 μA supply current for power-sensitive portable devices. Verify that the 1.8 MHz bandwidth meets the signal frequency requirements of the application.

Part Context

This device belongs to the ADM4073 family of current-sense amplifiers, which includes variants with different fixed gains. It offers pin-to-pin compatibility with the MAX4073, facilitating design transitions between manufacturers. The component is housed in a compact 6-lead SOT-23 package, making it suitable for space-constrained portable electronics and automotive environments.

Replacement Considerations

The MAX4073 is documented as a pin-compatible alternative within the same functional category.