ADM4073FWRJZ-REEL7

Overview

The ADM4073FWRJZ-REEL7 is a low-cost, high-side current-sense amplifier manufactured by Analog Devices Inc. It features a fixed voltage gain of 50 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. It offers a typical full-scale accuracy of ±1.0% and a bandwidth of 1.7 MHz. The component draws a typical supply current of 500 μA and functions reliably across an operating temperature range of −40°C to +125°C.

Feature Summary

• Provides a fixed internal voltage gain of 50 V/V without requiring external gain-setting resistors.
• Supports high-side current sensing with a common-mode input range extending up to 28 V.
• Operates on a single supply voltage ranging from 3 V to 28 V with low power consumption.
• Delivers typical full-scale accuracy of ±1.0% over the specified automotive temperature range.

Applications

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

Procurement Notes

Verify that the specific suffix WRJZ corresponds to the RoHS-compliant part in the 6-lead SOT-23 package. Confirm the gain version matches the required system design, as the F suffix indicates the 50 V/V variant. Ensure the ordering quantity aligns with the reel packaging specifications provided by the manufacturer for this specific part number.

Selection Notes

Select the ADM4073FWRJZ-REEL7 when a fixed 50 V/V gain is required for high-side current monitoring applications. This model is suitable for systems operating between 3 V and 28 V where low quiescent current is beneficial. Consider the 1.7 MHz bandwidth for control loop stability and verify that the output impedance requirements are met by the connected load circuitry.

Part Context

This component belongs to the ADM4073 family of current-sense amplifiers, which includes variants with gains of 20 V/V and 100 V/V. The ADM4073 series is designed as a compact solution for portable electronics, offering pin-to-pin compatibility with the MAX4073. It utilizes a 6-lead SOT-23 package to minimize board space while maintaining performance in battery-powered environments.

Replacement Considerations

The datasheet notes pin-to-pin compatibility with the MAX4073. Verify functional equivalence regarding gain accuracy and bandwidth before substitution.

FAQ

What is the maximum sense voltage supported by the ADM4073?

The maximum full-scale sense voltage (VSENSE) supported by the device is 150 mV.

Does the common-mode input range depend on the supply voltage?

No, the common-mode input range of 2 V to 28 V is independent of the supply voltage.