AD8541ARZ-REEL7

Overview

The AD8541ARTZ-REEL7 is a single-channel CMOS rail-to-rail general-purpose operational amplifier manufactured by Analog Devices Inc. It operates on a single supply voltage ranging from 2.7 V to 5.5 V and consumes a typical supply current of 45 µA per amplifier. The device features a gain bandwidth product of approximately 1 MHz, an input bias current as low as 4 pA, and a slew rate up to 0.92 V/µs at 5 V. It provides unity gain stability without phase reversal and supports output currents up to 30 mA. The component is housed in a 5-lead SOT-23 package and is specified for operation across an extended industrial temperature range of -40°C to +125°C.

Feature Summary

• Rail-to-rail input and output capability enables full signal swing utilization in single-supply systems.
• Extremely low input bias current of 4 pA facilitates interfacing with high-impedance sources such as photodiodes.
• Operates with minimal power consumption of 45 µA per amplifier, optimizing battery life in portable designs.
• Guaranteed unity gain stability and absence of phase reversal ensure reliable performance in feedback configurations.

Applications

• ASIC input or output buffering
• Sensor interfaces
• Piezoelectric transducer amplifiers
• Medical instrumentation
• Portable systems

Procurement Notes

Verify the specific ordering suffix 'REEL7' against official documentation to confirm the 3000-unit tape and reel packaging quantity. Ensure the part number matches the exact manufacturer designation to avoid confusion with similar variants like the standard REEL or non-reel versions. Cross-reference the RoHS compliance status indicated by the 'Z' suffix during procurement validation.

Selection Notes

Select this component when designing battery-powered circuits requiring low quiescent current alongside moderate bandwidth. The rail-to-rail architecture is essential for maximizing dynamic range in low-voltage single-supply environments. Consider the 4 pA input bias current for applications involving high source impedance sensors where leakage must be minimized.

Part Context

This part belongs to the AD854x family, which includes single (AD8541), dual (AD8542), and quad (AD8544) channel variants. All members share the same core CMOS rail-to-rail architecture and electrical characteristics. The AD8541 specifically denotes the single-channel version available in various packages including SOT-23, SC70, and SOIC.

Replacement Considerations

Direct functional substitutes within the same package include the AD8541ARTZ-REEL (10,000-unit reel). For automotive-grade requirements, verify availability of AEC-Q100 qualified models, though these may have distinct ordering codes.

FAQ

Does the AD8541ARTZ-REEL7 exhibit phase reversal?

No, the datasheet explicitly states that the amplifier has no phase reversal, ensuring stable operation even when input signals approach the negative rail.

What is the maximum short-circuit current capability?

At a 5 V supply, the short-circuit current is typically ±60 mA. At lower voltages, it provides 15 mA at 2.7 V and 18 mA at 3.0 V.

Is the AD8541ARTZ-REEL7 suitable for photodiode applications?

Yes, its very low input bias current (typically 4 pA) makes it ideal for photodiode amplifiers and other high-impedance source applications.