Part A
AD8066ARZ
Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 2596 Stückzahl
- Package
- SOIC-8
- Series
- Linear-Verstärker.Instrumentation, OP-Verstärker, Pufferverstärker
Replacement verdict
Not a drop-in replacement
The AD8066ARZ and AD8063AR-REEL7 are not drop-in replacements for one another. Although both are Analog Devices FastFET operational amplifiers in an 8-lead SOIC package, they differ in channel count, supply voltage range, quiescent current, and bandwidth, so the AD8063AR-REEL7 cannot directly substitute the AD8066ARZ without circuit redesign and validation.
Different channel count
Different supply voltage range
Different quiescent current
Different bandwidth
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 | AD8066ARZ | AD8063AR-REEL7 | Why it matters |
|---|---|---|---|
| Number of Amplifiers | 2 (Dual) | 1 (Single) | Channel count determines whether the part can directly replace the other in a circuit; a dual cannot substitute a single without layout changes. |
| Gain Bandwidth Product | 145 MHz | 320 MHz | GBW sets the maximum signal frequency the amplifier can handle at unity gain, affecting bandwidth-critical designs. |
| -3 dB Bandwidth (G = +1) | 145 MHz | 320 MHz | Closed-loop bandwidth indicates the usable frequency range in unity-gain configurations. |
| Slew Rate | 180 V/µs | 650 V/µs | Slew rate limits how fast the output can respond to large signal steps; higher slew rate supports faster, larger-swing signals. |
| Input Voltage Noise Density | 7 nV/√Hz | 8.5 nV/√Hz | Lower input noise improves signal-to-noise ratio in low-level signal amplification applications. |
| Supply Voltage Range | 5 V to 24 V (±2.5 V to ±12 V) | 5 V to 12 V (±2.5 V to ±6 V) | The allowable supply range determines compatibility with the system power rails and maximum output swing. |
| Quiescent Supply Current per Amplifier | 6.4 mA typ | 6.8 mA typ | Quiescent current affects power budget and thermal performance in the target design. |
| Package | 8-Lead SOIC | 8-Lead SOIC | Package footprint and pinout must match for a drop-in replacement; identical package type aids board compatibility. |
| Output Current (Short-Circuit) | 35 mA | 50 mA | Output drive capability determines the load the amplifier can drive, such as cables or low-impedance loads. |
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 | AD8066ARZ | AD8063AR-REEL7 |
|---|---|---|
| Supplier | - | Rochester Electronics, LLC |
| Part Status | Active | Obsolete |
| Amplifier Type | Voltage Feedback | Voltage Feedback |
| Number of Circuits | 2 | 1 |
| Output Type | Rail-to-Rail | Rail-to-Rail |
| Slew Rate | 180V/µs | 650V/µs |
| -3 dB Bandwidth | 155 MHz | 320 MHz |
| Current - Input Bias | 3 pA | 3.5 µA |
| Voltage - Input Offset | 400 µV | 1 mV |
| Supply Current | 6.6mA (x2 Channels) | 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 key differences between the AD8066ARZ and AD8063AR-REEL7?
The AD8066ARZ is a dual, high-performance, fast FET-input operational amplifier in an 8-lead SOIC package, while the AD8063AR-REEL7 is a single, low-cost, high-speed amplifier in an 8-lead SOIC package supplied on a 7-inch reel. The AD8066 offers two amplifiers per package with FET inputs, whereas the AD8063 is a single bipolar-input amplifier optimized for cost-sensitive video and high-speed applications.
Are the AD8066ARZ and AD8063AR-REEL7 pin-compatible?
No. Although both devices are offered in an 8-lead SOIC package, their pinouts differ because the AD8066ARZ is a dual amplifier and the AD8063AR-REEL7 is a single amplifier. The pin functions and internal connections are not interchangeable, so the PCB layout must be designed specifically for each device.
Can the AD8063AR-REEL7 be used as a direct replacement for the AD8066ARZ?
No. The AD8066ARZ contains two operational amplifiers, while the AD8063AR-REEL7 contains only one. In addition, the AD8066 uses FET inputs and the AD8063 uses bipolar inputs, resulting in different input bias current, input impedance, and noise characteristics. A direct substitution is not possible without redesigning the circuit.
What are the input characteristics of the AD8066ARZ compared with the AD8063AR-REEL7?
The AD8066ARZ features FET inputs with very low input bias current, making it suitable for high-impedance sensor and photodiode applications. The AD8063AR-REEL7 uses bipolar inputs, which typically exhibit higher input bias current but can offer advantages in cost-sensitive, lower-impedance signal chains. Designers should verify the exact input bias current and input impedance values from the respective Analog Devices datasheets for their operating conditions.
Which device is better suited for dual-amplifier signal chains?
The AD8066ARZ is the appropriate choice when two matched amplifiers are required in a single package, such as in differential signal conditioning, dual-channel filters, or stereo audio paths. The AD8063AR-REEL7 provides only a single amplifier, so two packages would be needed for a dual-channel function, increasing board space and component count.
How does the packaging and ordering quantity differ between the two parts?
The AD8066ARZ is supplied in an 8-lead SOIC package in standard tube or tray quantities depending on the distributor. The AD8063AR-REEL7 is supplied in an 8-lead SOIC package on a 7-inch tape-and-reel with a defined reel quantity, which is intended for automated pick-and-place assembly lines. Buyers should confirm the exact reel quantity and packaging option from the distributor or Analog Devices ordering guide.
Do both devices share the same supply voltage and temperature range specifications?
Both the AD8066ARZ and AD8063AR-REEL7 are specified for operation on a single supply or dual supplies within the ranges stated in their respective Analog Devices datasheets, and both are rated for the industrial temperature range. However, the exact minimum and maximum supply voltages and the precise temperature range should be verified individually from each datasheet, as the two products belong to different amplifier families and may not have identical limits.
Which part should be selected for a cost-sensitive single-channel high-speed design?
The AD8063AR-REEL7 is generally the more appropriate choice for a single-channel, cost-sensitive high-speed design because it provides one amplifier in a small SOIC package and is positioned as a low-cost high-speed solution. The AD8066ARZ would add an unused second amplifier and FET-input performance that may not be required, so the AD8063AR-REEL7 can reduce cost and board space in that specific application.