ADA4098-2HRZ-RL7

Overview

The ADA4098-2HRZ-RL7 is a dual-channel precision operational amplifier from Analog Devices. It features Over-The-Top input capability, allowing operation from −VS to +VS and beyond (up to +70 V relative to −VS). Key electrical parameters include a gain-bandwidth product of 1.05 MHz, a slew rate of 0.85 V/µs, and a maximum input offset voltage of ±35 µV. The device operates on supply voltages ranging from +3 V to +50 V with a typical quiescent current of 165 µA per channel.

Feature Summary

• Over-The-Top input stage enabling common-mode voltage range from −VS to +VS + 70 V
• Robust input protection tolerant to differential input voltages up to ±80 V without damage or phase reversal
• Low power consumption with shutdown mode reducing supply current to under 20 µA
• High precision DC performance with low input offset voltage drift and high CMRR

Applications

• Industrial sensor signal conditioning
• Supply current sensing
• Battery and power supply monitoring
• Front-end amplifiers in abusive environments
• 4 mA to 20 mA transmitters

Procurement Notes

Verify the specific suffix HRZ-RL7 against the manufacturer's ordering guide to confirm package type (LFCSP) and reel packaging configuration. Ensure compatibility with the required temperature grade (H Grade for -55°C to +150°C) as specified in the datasheet. Confirm RoHS compliance status through official documentation before procurement.

Selection Notes

Select this component when high voltage overdrive tolerance and rail-to-rail output are required alongside precision DC accuracy. The dual-channel configuration is suitable for applications needing two independent amplifiers in a compact footprint. Consider the thermal resistance characteristics and PCB layout requirements for heat dissipation if operating near maximum junction temperatures.

Part Context

This part belongs to the ADA4098 family of robust, precision op amps designed for harsh environments. The dual-channel variant provides two independent amplifiers, contrasting with the single-channel ADA4098-1. It shares core specifications like the 1 MHz bandwidth and 165 µA/channel current draw with its siblings but differs in pin count and package options such as SOIC_N, MSOP, and LFCSP.

Replacement Considerations

Direct substitutes within the same family include the ADA4098-2 in alternative packages like SOIC_N or MSOP. Verify that any replacement maintains the H Grade temperature rating and Over-The-Top input specifications. Single-channel equivalents like the ADA4098-1 require circuit redesign for dual-channel functionality.