Part A
AD8599ARZ
テキサス・インスツルメンツ
- Lifecycle
- Active
- Stock
- 5652 個数
- Package
- SOIC-8
- Series
- リニアアンプ - 計装用、オペアンプ、バッファアンプ
Replacement verdict
Compatible functional replacement candidate
The AD8597ARZ and AD8599ARZ are both dual, low-noise, low-distortion operational amplifiers in the same 8-lead SOIC package with identical pinout, making the AD8599ARZ a viable functional replacement candidate for the AD8597ARZ in most designs. However, the two devices differ in their input voltage noise density and quiescent current, so the replacement should be validated against the noise budget and power consumption requirements of the target application before adoption.
Package Type
High match
Pin Configuration
High match
Input Voltage Noise Density
Validation required
Quiescent Current
Validation required
Key differences
Rows are prioritized by design impact. Highlighted values require attention during substitution.
Key electrical and mechanical differences between the two devices
| Parameter | AD8597ARZ | AD8599ARZ | Why it matters |
|---|---|---|---|
| Number of Amplifiers | 1 | 2 | Determines channel count; a dual amplifier cannot directly replace a single in a single-channel PCB layout without redesign. |
| Input Voltage Noise Density | 1.1 nV/√Hz | 1.1 nV/√Hz | Low noise is critical for precision signal conditioning; matching noise performance preserves system SNR. |
| Input Offset Voltage (max) | 10 µV | 10 µV | Offset directly affects DC accuracy; identical offset specs allow equivalent precision in DC-coupled applications. |
| Gain Bandwidth Product | 10 MHz | 10 MHz | GBW sets the achievable closed-loop bandwidth; matching values ensure comparable AC performance. |
| Slew Rate | 14 V/µs | 14 V/µs | Slew rate limits large-signal response; identical slew rates preserve transient behavior. |
| Supply Voltage Range | ±5 V to ±15 V | ±5 V to ±15 V | Compatible supply ranges allow the parts to operate in the same power rails without modification. |
| Input Bias Current | 100 nA | 100 nA | Bias current affects offset error in high-impedance circuits; matching values maintain similar error budgets. |
| Package | 8-Lead SOIC | 8-Lead SOIC | Same package footprint enables drop-in board compatibility. |
| Quiescent Supply Current (per amplifier) | ~2.5 mA | ~2.5 mA per amp (dual) | Total current draw differs because the dual device powers two amplifiers; affects power budget in low-power designs. |
Need help validating a replacement?
Send your BOM and application constraints for technical and sourcing review.
Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | AD8599ARZ | AD8597ARZ |
|---|---|---|
| Part Status | Active | Active |
| Amplifier Type | General Purpose | General Purpose |
| Number of Circuits | 2 | 1 |
| Slew Rate | 16V/µs | 16V/µs |
| Gain Bandwidth Product | 10 MHz | 10 MHz |
| Current - Input Bias | 25 nA | 25 nA |
| Voltage - Input Offset | 10 µV | 10 µV |
| Supply Current | 5mA (x2 Channels) | 5mA |
| Current - Output / Channel | 52 mA | 52 mA |
| Voltage - Supply Span(Min) | 9 V | 9 V |
| Voltage - Supply Span(Max) | 30 V | 36 V |
| Operating Temperature | -40°C ~ 125°C | -40°C ~ 125°C |
| Mounting Type | Surface Mount | Surface Mount |
Frequently asked questions
What are the key differences between the AD8597ARZ and AD8599ARZ operational amplifiers?
The AD8597ARZ is a single ultra-low-noise, low-distortion op amp, while the AD8599ARZ is a dual version of the same amplifier core. Both are specified for 10 nV/√Hz input voltage noise at 1 kHz and 0.0000001% (1 ppb) THD+N, but the AD8599ARZ integrates two independent amplifiers in one package, making it suitable for dual-channel signal chains where board space and channel matching matter.
Are the AD8597ARZ and AD8599ARZ pin-compatible or interchangeable in existing designs?
No. The AD8597ARZ is a single op amp in an 8-lead SOIC package, and the AD8599ARZ is a dual op amp in an 8-lead SOIC package. Although both use the SOIC-8 footprint, the pin functions differ: the single device uses pins for offset null and no second channel, while the dual device assigns pins to two amplifiers. They are not drop-in replacements for each other.
What are the supply voltage and quiescent current specifications for these devices?
Both the AD8597ARZ and AD8599ARZ operate from a dual supply of ±5 V to ±15 V (or a single supply of 10 V to 30 V). The AD8597ARZ typically draws about 5 mA per amplifier, and the AD8599ARZ draws approximately 5 mA per amplifier as well, so the dual device consumes roughly twice the total quiescent current of the single device when both channels are active.
Which applications are better suited to the AD8597ARZ versus the AD8599ARZ?
The AD8597ARZ is preferred for single-channel precision applications such as low-noise preamplifiers, sensor interfaces, and professional audio input stages where only one amplifier is needed. The AD8599ARZ is better suited to stereo audio, dual-channel filter stages, and I/Q signal paths where two matched low-noise amplifiers must share a common package and thermal environment.
Do both devices share the same noise and distortion performance?
Yes. Both the AD8597ARZ and AD8599ARZ are specified with 10 nV/√Hz input voltage noise at 1 kHz and 0.0000001% (1 ppb) THD+N, along with low input bias current and high open-loop gain. The dual AD8599ARZ maintains the same per-amplifier noise and distortion specifications as the single AD8597ARZ.
What package and temperature range options are available for the AD8597ARZ and AD8599ARZ?
Both devices are offered in an 8-lead SOIC package with the "ARZ" suffix indicating the RoHS-compliant SOIC-8 option. Both are specified over the industrial temperature range of −40°C to +125°C, allowing use in industrial and professional audio environments.
Can the AD8599ARZ be used as two independent AD8597ARZ amplifiers in a design?
Functionally, each amplifier inside the AD8599ARZ is based on the same core as the AD8597ARZ, so a dual AD8599ARZ can serve two single-amplifier functions in one package. However, the pinout and package-level thermal coupling differ, so the PCB layout and offset-null provisions must be redesigned rather than copied from an AD8597ARZ layout.