AD8513AR-REEL7

Overview

The AD8513AR-REEL7 is a quad precision JFET operational amplifier from Analog Devices, housed in a 14-lead SOIC_N package. It features an 8 MHz gain bandwidth product and a 20 V/μs slew rate. Key electrical parameters include a maximum input offset voltage of 0.4 mV (B Grade) or 1.0 mV (A Grade), typical input bias current of 25 pA to 80 pA, and low noise density of 8 nV/√Hz at 1 kHz. The device operates on dual supplies ranging from ±5 V to ±15 V with a supply current of approximately 2.5 mA per amplifier.

Feature Summary

• Provides fast settling time and maintains stability even when driving substantial capacitive loads without oscillation.
• Eliminates output phase reversal issues that occur when input voltages exceed the maximum common-mode voltage range.
• Delivers high DC precision combined with very low input bias current and low noise for accurate signal processing.

Applications

• Instrumentation systems requiring high accuracy
• Multipole filter circuits demanding fast settling
• Photodiode amplifiers utilizing high impedance sensors
• Precision current measurement using shunt resistors

Procurement Notes

Verify the specific grade (A or B) required for your offset voltage specifications, as performance varies between them. Confirm the 14-lead SOIC_N package compatibility with your PCB footprint. Ensure the dual-supply voltage range aligns with your system design, as the device requires both positive and negative rails for optimal operation within the specified temperature range.

Selection Notes

Select this component when high speed and precision are simultaneously required. The quad configuration offers space efficiency compared to single-channel alternatives. Consider the A Grade if tighter offset voltage tolerances are necessary, or the B Grade for standard precision applications. The low input bias current makes it suitable for high-impedance sources where leakage currents would otherwise degrade accuracy.

Part Context

This part belongs to the AD8510/AD8512/AD8513 family of precision JFET amplifiers. While the AD8510 is a single-channel and the AD8512 is dual-channel, the AD8513 provides four channels in a compact package. All members share identical electrical characteristics regarding noise, bandwidth, and bias current, differing only in channel count and pinout configuration.

Replacement Considerations

Direct functional substitutes within the same family include the AD8510AR and AD8512AR variants, though pinouts differ. Cross-family replacements require careful evaluation of gain bandwidth and bias current specifications to ensure circuit stability and accuracy are maintained.