Part A
AD8065ARZ
Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 6652 Stückzahl
- Package
- SOIC-8
- Series
- Linear-Verstärker.Instrumentation, OP-Verstärker, Pufferverstärker
Replacement verdict
Not a drop-in replacement
The AD8065ARZ and AD8063AR-REEL7 are not drop-in replacements for each other. Although both are single-channel FastFET operational amplifiers from Analog Devices, they differ in supply voltage range, quiescent current, unity-gain bandwidth, and package/temperature grade, so the AD8063AR-REEL7 cannot be substituted directly for the AD8065ARZ without design validation.
Different supply voltage range
Different quiescent current
Different bandwidth
Different temperature grade
Parts at a glance
Part B
AD8063AR-REEL7
Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 9277 Stückzahl
- Package
- SOIC-8
- Series
- Linear-Verstärker.Instrumentation, OP-Verstärker, Pufferverstärker
Key differences
Rows are prioritized by design impact. Highlighted values require attention during substitution.
Key electrical and mechanical differences between the two devices
| Parameter | AD8065ARZ | AD8063AR-REEL7 | Why it matters |
|---|---|---|---|
| -3 dB Bandwidth | 145 MHz | 320 MHz | Bandwidth determines the maximum signal frequency the amplifier can handle with acceptable gain, directly affecting high-speed signal fidelity. |
| Slew Rate | 180 V/µs | 650 V/µs | Slew rate limits how fast the output can respond to large signal changes; higher slew rate supports faster, larger-amplitude signals without distortion. |
| Input Voltage Noise Density | 7 nV/√Hz | 8.5 nV/√Hz | Lower input voltage noise improves signal-to-noise ratio in low-level signal applications, which is critical for precision amplification. |
| Supply Voltage Range | 5 V to 24 V (±2.5 V to ±12 V) | 2.7 V to 12 V (±1.35 V to ±6 V) | The supply range determines compatibility with the system power rails; a narrower range may not work in higher-voltage designs. |
| Quiescent Supply Current | 6.4 mA | 7.5 mA | Quiescent current affects power consumption and thermal budget, important for portable and power-sensitive designs. |
| Input Bias Current | 6 pA | 11 pA | Low input bias current minimizes offset errors in high-impedance circuits such as photodiode and sensor interfaces. |
| Output Current (Short-Circuit) | 35 mA | 50 mA | Output drive capability determines the ability to drive low-impedance loads and cables without signal degradation. |
| Package / Pin Count | 8-Lead SOIC | 8-Lead SOIC | Package and pinout compatibility is essential for drop-in replacement on an existing PCB layout. |
| Operating Temperature Range | -40 °C to +85 °C | -40 °C to +85 °C | The temperature range must cover the application environment to ensure reliable operation and specified performance. |
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 | AD8065ARZ | AD8063AR-REEL7 |
|---|---|---|
| Supplier | - | Rochester Electronics, LLC |
| Part Status | Active | Obsolete |
| Amplifier Type | Voltage Feedback | Voltage Feedback |
| Number of Circuits | 1 | 1 |
| Output Type | Rail-to-Rail | Rail-to-Rail |
| Slew Rate | 180V/µs | 650V/µs |
| -3 dB Bandwidth | 145 MHz | 320 MHz |
| Current - Input Bias | 3 pA | 3.5 µA |
| Voltage - Input Offset | 400 µV | 1 mV |
| Supply Current | 6.6mA | 6.8mA |
| Current - Output / Channel | 30 mA | 50 mA |
| Voltage - Supply Span(Min) | 5 V | 2.7 V |
| Voltage - Supply Span(Max) | 24 V | 8 V |
| Operating Temperature | -40°C ~ 85°C | -40°C ~ 85°C |
| Mounting Type | Surface Mount | Surface Mount |
| Series | FastFET™ | - |
Frequently asked questions
What are the primary differences between the AD8065ARZ and AD8063AR-REEL7?
The AD8065ARZ is a single, high-performance, fast FET-input operational amplifier in an 8-lead SOIC package, featuring a 145 MHz gain bandwidth product and 180 V/µs slew rate. The AD8063AR-REEL7 is a single, low-cost, high-speed amplifier in an 8-lead SOIC package supplied on a 7-inch reel, with a 325 MHz gain bandwidth product and 375 V/µs slew rate, but it is optimized for lower power and cost-sensitive applications. The AD8065ARZ is specified for operation from -40°C to +85°C, while the AD8063AR-REEL7 is specified over the same temperature range but with different supply current and input bias current characteristics.
Are the AD8065ARZ and AD8063AR-REEL7 pin-compatible?
Yes, both devices are offered in an 8-lead SOIC package with the same pinout: pin 1 is NC, pin 2 is -IN, pin 3 is +IN, pin 4 is -VS, pin 5 is NC, pin 6 is OUT, pin 7 is +VS, and pin 8 is NC. However, pin-compatibility does not guarantee electrical compatibility; the surrounding circuit must be validated for the different bandwidth, slew rate, and supply current specifications.
Can the AD8063AR-REEL7 be used as a direct drop-in replacement for the AD8065ARZ?
No, a direct drop-in replacement is not recommended without circuit validation. The AD8063AR-REEL7 has a significantly higher gain bandwidth product (325 MHz vs 145 MHz) and slew rate (375 V/µs vs 180 V/µs), which can affect stability, peaking, and noise performance in an existing AD8065ARZ design. Additionally, the input bias current and supply current specifications differ, so the feedback network and power budget must be re-evaluated.
What are the supply voltage ranges for the AD8065ARZ and AD8063AR-REEL7?
The AD8065ARZ operates from a single supply of 5 V to 24 V or a dual supply of ±2.5 V to ±12 V. The AD8063AR-REEL7 operates from a single supply of 5 V to 12 V or a dual supply of ±2.5 V to ±6 V. Designs requiring supply voltages above ±6 V or 12 V single-supply must use the AD8065ARZ, as the AD8063AR-REEL7 is not rated for those higher voltages.
How do the input bias currents of the AD8065ARZ and AD8063AR-REEL7 compare?
The AD8065ARZ is a FET-input amplifier with a typical input bias current of 2 pA at 25°C, making it suitable for high-impedance sensor interfaces and photodiode transimpedance amplifiers. The AD8063AR-REEL7 has a typical input bias current of 1.5 µA at 25°C, which is several orders of magnitude higher and can cause significant offset errors in high-impedance circuits. For applications requiring very low input bias current, the AD8065ARZ is the appropriate choice.
What is the difference in quiescent supply current between the two devices?
The AD8065ARZ typically draws 6.4 mA of quiescent supply current per amplifier at 25°C. The AD8063AR-REEL7 typically draws 6.8 mA of quiescent supply current at 25°C. While the difference is small, the AD8063AR-REEL7 is generally positioned as a lower-cost alternative rather than a lower-power alternative, so power-sensitive designs should compare the full supply current versus bandwidth trade-off.
Which device is better suited for high-speed signal conditioning?
The AD8063AR-REEL7 offers a higher gain bandwidth product of 325 MHz and a slew rate of 375 V/µs, making it better suited for very high-speed signal conditioning where wider closed-loop bandwidth and faster large-signal response are required. The AD8065ARZ, with 145 MHz gain bandwidth and 180 V/µs slew rate, is better suited for precision high-speed applications that prioritize low input bias current and lower noise over maximum bandwidth.
What packaging and ordering differences exist between the AD8065ARZ and AD8063AR-REEL7?
Both devices are supplied in an 8-lead SOIC package. The AD8065ARZ is typically supplied in tube or tray quantities for prototype and production use. The AD8063AR-REEL7 is supplied on a 7-inch tape-and-reel with 750 units per reel, which is intended for automated surface-mount assembly. The "-REEL7" suffix indicates the tape-and-reel packaging option and does not indicate a different silicon die or performance grade.