ADA4098-1HUJZ-RL7

Overview

The ADA4098-1HUJZ-RL7 is a single-channel, precision operational amplifier manufactured by Analog Devices Inc. It features an Over-The-Top input stage allowing operation from −VS to +VS and beyond, with a maximum common-mode voltage of −VS + 70 V. The device operates on supply voltages ranging from +3 V to +50 V. Key electrical parameters include a gain-bandwidth product of 1.05 MHz, a slew rate of 0.85 V/µs, and a typical supply current of 165 µA per channel. It offers low input offset voltage (±35 µV max) and drift (±0.5 µV/°C max). The H-grade variant supports an extended operating temperature range from −55°C to +150°C.

Feature Summary

• Over-The-Top input capability enabling robust operation in abusive environments with high common-mode voltages
• Low power consumption with shutdown functionality reducing supply current significantly
• High precision DC performance characterized by minimal offset voltage and drift
• Integrated thermal shutdown protection for enhanced reliability under overload conditions

Applications

• Industrial sensor signal conditioning
• Supply current sensing applications
• Battery and power supply monitoring systems
• Front-end amplifiers in harsh or abusive environments
• 4 mA to 20 mA transmitter circuits

Procurement Notes

Verify the specific H-grade suffix against official ordering guides to confirm the extended temperature rating. Ensure compatibility with the TSOT-6 package dimensions during PCB layout. Confirm that the application environment does not exceed the absolute maximum ratings for transient overshoot or continuous supply voltage limits defined in the datasheet.

Selection Notes

Select this component when high common-mode voltage tolerance is required alongside precision amplification. The H-grade version is suitable for extreme temperature environments exceeding standard industrial ranges. Consider the shutdown pin functionality if power management is critical. Verify that the capacitive load requirements do not exceed the specified stability limits for unity-gain configurations.

Part Context

This part belongs to the ADA4098 family of robust, precision operational amplifiers designed for demanding industrial applications. The single-channel configuration distinguishes it from the dual-channel ADA4098-2. The HUJZ designation indicates the specific grade and packaging format within the Analog Devices portfolio, tailored for surface-mount assembly.

Replacement Considerations

ADA4098-1BUJZ-R5

FAQ

How does the Over-The-Top input stage function?

The device utilizes two distinct input stages: a common emitter stage for normal operation and a common base stage that activates when the common-mode voltage exceeds +VS - 1.25 V, allowing inputs to reach up to −VS + 70 V.

What is the purpose of the SHDN pin?

The SHDN pin controls the amplifier's active state. Asserting it high places the device in a low-power shutdown mode, while tying it to −VS or leaving it floating keeps the amplifier active.