AD8619ARUZ-REEL

Overview

The AD8619ARUZ-REEL is a quad micro-power, low noise CMOS operational amplifier with rail-to-rail input and output capabilities. It operates from single supplies of 1.8 V to 5.5 V or dual supplies of ±0.9 V to ±2.75 V. Key electrical specifications include a maximum offset voltage of 2.2 mV, a maximum input bias current of 1 pA, and a supply current of 38 μA per amplifier at 25°C. The device features a gain bandwidth product of 400 kHz, a slew rate of 0.1 V/μs, and an input voltage noise density of 25 nV/√Hz at 1 kHz. It is housed in a 14-lead TSSOP package.

Feature Summary

• Rail-to-rail input and output operation enables full signal swing in low voltage single-supply systems.
• Micropower consumption combined with low noise characteristics supports extended battery life in portable applications.
• Patented trimming technology ensures high precision without the need for laser trimming.
• Unity gain stability and no phase reversal simplify circuit design and improve reliability.

Applications

• Battery-powered instrumentation
• Multipole filters
• Current shunt sense
• Sensors
• ADC predrivers

Procurement Notes

Verify that the ordering suffix -REEL corresponds to the tape and reel packaging format required for automated assembly processes. Confirm the specific lot traceability and RoHS compliance status directly with the manufacturer or authorized distributor prior to procurement. Ensure the component matches the exact Rev H datasheet specifications for critical design parameters.

Selection Notes

Select this component when designing low power circuits requiring precise amplification of small signals. The quad configuration reduces board space compared to using individual single or dual amplifiers. Consider the 400 kHz bandwidth and 0.1 V/μs slew rate for applications where speed is secondary to power efficiency and accuracy. Verify that the load capacitance requirements are met to maintain stability.

Part Context

This part belongs to the AD8613/AD8617/AD8619 family of low cost micropower amplifiers. While sharing core architectural similarities, the AD8619 specifically provides four independent channels in a 14-lead package. This distinguishes it from the single-channel AD8613 and the dual-channel AD8617, offering higher integration density for multi-channel signal processing tasks.

Replacement Considerations

The AD8619ARZ-REEL serves as a direct pin-compatible replacement utilizing the SOIC-14 package instead of TSSOP. Designers must verify thermal resistance differences between the RU-14 and R-14 packages if heat dissipation is a constraint. Automotive qualified variants such as the AD8619WARUZ-REEL may be considered if enhanced reliability standards are required.