AD8599ARZ-REEL7

Overview

The AD8599ARZ-REEL7 is a dual, ultralow noise, and low distortion operational amplifier manufactured by Analog Devices Inc. It operates with supply voltages up to ±15 V and features a gain bandwidth product of 10 MHz and a slew rate of 14 V/μs at ±5 V supplies. The device exhibits an input voltage noise density of 1.1 nV/√Hz at 1 kHz and total harmonic distortion of −120 dB at 1 kHz. Typical offset voltage is 10 μV with a drift of 0.8 μV/°C. Supply current per amplifier is 4.8 mA typical at ±5 V and 5.0 mA at ±15 V. It is unity-gain stable and specified over a temperature range of −40°C to +125°C.

Feature Summary

• Ultralow voltage noise density of 1.1 nV/√Hz for high-fidelity signal integrity
• Low harmonic distortion of −120 dB THD at audio frequencies
• Wide gain bandwidth of 10 MHz and fast slew rate for dynamic applications
• High common-mode rejection ratio of 120 dB

Applications

• Professional audio preamplifiers
• Medical and physiological measurements
• Precision data conversion buffering
• Imaging systems
• ATE and precision testers

Procurement Notes

Verify the package type matches the required footprint, as the AD8599 is available in an 8-lead SOIC package. Confirm the suffix REEL7 indicates tape and reel packaging suitable for automated assembly. Ensure the operating temperature range meets system requirements, as the device is rated from −40°C to +125°C. Check that supply voltages do not exceed the absolute maximum ratings of ±18 V to prevent damage.

Selection Notes

Select this component when ultralow noise and distortion are critical, particularly for audio or medical instrumentation. It is suitable for buffering high-resolution data converters due to its fast settling time. Consider source impedance carefully, as optimal noise performance requires source resistance below 1 kΩ. For single-channel applications, the AD8597 may be more appropriate. Ensure the circuit design accounts for the non-rail-to-rail input voltage range to avoid phase reversal.

Part Context

The AD8599 is part of Analog Devices' series of low-noise operational amplifiers, designed alongside the single-channel AD8597. It shares similar electrical characteristics but provides two amplifiers in one package. This family targets applications requiring wide dynamic range and high precision. The AD8599 complements other low-noise options like the ADA4004 series and AD867x series, offering specific trade-offs between noise, speed, and power consumption.

Replacement Considerations

The AD8597 serves as the single-channel equivalent within the same family. Other low-noise op amps such as the ADA4004-2 or AD8676 may offer alternative pinouts or specifications. Verify compatibility regarding input bias current, offset voltage, and package dimensions before substitution.

FAQ

Is the AD8599 rail-to-rail input capable?

No, the AD8599 is not a rail-to-rail input amplifier. Care must be taken to ensure inputs remain within the specified common-mode voltage range to prevent output phase reversal.

What is the recommended maximum source impedance for optimal noise performance?

Optimal dc noise performance is achieved when the source resistance is kept below 1 kΩ. Higher source resistances increase the impact of current noise.

How does the AD8599 handle overvoltage conditions on the inputs?

If input voltage exceeds the supply rails, ESD protection diodes may become forward-biased. Series resistors should be used to limit current to less than 5 mA to prevent damage.