Part A
AD8062ARMZ
Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 4293 PCS
- Package
- MSOP-8
- Series
- Linear - Amplificadores - Instrumentação, OP Amps, Buffer Amps
Replacement verdict
Compatible functional replacement candidate
The AD8066ARMZ and AD8062ARMZ are both dual high-performance FastFET operational amplifiers from Analog Devices in the same 8-lead MSOP package, sharing identical pinout and supply voltage range. The AD8066ARMZ is a dual version of the AD8065 with lower noise and higher bandwidth, while the AD8062ARMZ is a dual version of the AD8061 optimized for lower quiescent current and rail-to-rail output swing. Because key electrical parameters such as quiescent current, unity-gain bandwidth, and input voltage noise differ between the two devices, the AD8062ARMZ can serve as a functional replacement for the AD8066ARMZ only after the designer validates that the reduced bandwidth and altered noise/current characteristics remain acceptable for the target circuit.
Package Type
High match
Pin Configuration
High match
Supply Voltage Range
Validation required
Bandwidth and Quiescent Current
Not compatible
Parts at a glance
Part B
AD8066ARMZ
Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 1838 PCS
- Package
- MSOP-8
- Series
- Linear - Amplificadores - Instrumentação, OP Amps, Buffer Amps
Key differences
Rows are prioritized by design impact. Highlighted values require attention during substitution.
Key electrical and mechanical differences between the two devices
| Parameter | AD8066ARMZ | AD8062ARMZ | Why it matters |
|---|---|---|---|
| Number of Amplifiers | 2 (Dual) | 2 (Dual) | Both are dual amplifiers, so channel count is compatible for substitution. |
| -3 dB Bandwidth | 145 MHz | 80 MHz | Bandwidth determines the maximum signal frequency the amplifier can handle with acceptable gain; the AD8066 offers significantly higher bandwidth. |
| Slew Rate | 180 V/µs | 50 V/µs | Slew rate limits how fast the output can change; higher slew rate supports larger/faster signals without distortion. |
| Input Voltage Noise Density | 7 nV/√Hz | 16 nV/√Hz | Lower noise density improves signal-to-noise ratio in precision and low-level signal applications. |
| Supply Current per Amplifier | 6.4 mA | 6.8 mA | Quiescent current affects power consumption and thermal budget in the design. |
| Input Bias Current | 6 pA | 6 pA | Very low input bias current (FET input) minimizes DC errors in high-impedance circuits; both are equivalent here. |
| Supply Voltage Range | 5 V to 24 V | 3 V to 12 V | The usable supply range determines compatibility with the system power rail; the AD8062 supports lower supplies but not the higher end of the AD8066. |
| Output Current | 35 mA | 50 mA | Output drive capability affects the ability to drive low-impedance loads or cables. |
| Package | 8-Lead MSOP | 8-Lead MSOP | Identical package and pinout allow direct board-level drop-in substitution. |
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 | AD8062ARMZ | AD8066ARMZ |
|---|---|---|
| Part Status | Active | Active |
| Amplifier Type | Voltage Feedback | Voltage Feedback |
| Number of Circuits | 2 | 2 |
| Output Type | Rail-to-Rail | Rail-to-Rail |
| Slew Rate | 650V/µs | 180V/µs |
| -3 dB Bandwidth | 320 MHz | 120 MHz |
| Current - Input Bias | 3.5 µA | 3 pA |
| Voltage - Input Offset | 1 mV | 400 µV |
| Supply Current | 6.8mA (x2 Channels) | 6.6mA (x2 Channels) |
| Current - Output / Channel | 50 mA | 30 mA |
| Voltage - Supply Span(Min) | 2.7 V | 5 V |
| Voltage - Supply Span(Max) | 8 V | 24 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 AD8066ARMZ and AD8062ARMZ?
The AD8066ARMZ is a dual voltage-feedback operational amplifier, while the AD8062ARMZ is a dual current-feedback operational amplifier. Both are offered in an 8-lead MSOP (RM) package, but they differ in amplifier architecture, bandwidth, slew rate, and optimal application: the AD8066 is optimized for FET-input voltage-feedback applications, whereas the AD8062 is optimized for high-speed current-feedback signal processing.
Are the AD8066ARMZ and AD8062ARMZ pin-compatible in the MSOP package?
Both devices are specified in the same 8-lead MSOP (RM) package, so the package footprint and pin count match. However, pin-compatibility alone does not guarantee interchangeability; the surrounding circuit must be validated because the two parts use different feedback architectures and have different input/output characteristics.
Can the AD8066ARMZ be used as a direct drop-in replacement for the AD8062ARMZ?
No. Although both are dual op amps in an 8-lead MSOP package, the AD8066ARMZ is a voltage-feedback amplifier and the AD8062ARMZ is a current-feedback amplifier. Their feedback networks, gain-setting requirements, and stability behavior differ, so a direct substitution without redesign and verification is not recommended.
Which part is better suited for high-speed current-feedback applications?
The AD8062ARMZ is the current-feedback dual amplifier and is the appropriate choice when a current-feedback topology is required. The AD8066ARMZ is a voltage-feedback device and is not intended for current-feedback circuit designs.
Do both parts operate from the same supply voltage range?
Both the AD8066ARMZ and AD8062ARMZ are specified for operation on single supplies from 5 V to 24 V and dual supplies of ±2.5 V to ±12 V, per Analog Devices datasheets. Designers should still confirm the exact supply range and derating requirements against the latest manufacturer datasheet for the specific grade.
What package do the AD8066ARMZ and AD8062ARMZ use?
Both the AD8066ARMZ and AD8062ARMZ are supplied in the 8-lead MSOP package, indicated by the "RM" suffix in the part number. The "Z" suffix denotes RoHS-compliant lead-free construction per Analog Devices ordering information.
Which device should be selected for low-noise voltage-feedback signal conditioning?
The AD8066ARMZ, as a voltage-feedback amplifier, is the more appropriate selection for voltage-feedback signal-conditioning topologies. The AD8062ARMZ, being a current-feedback amplifier, is generally selected for applications requiring current-feedback bandwidth and slew-rate performance rather than voltage-feedback noise and gain stability.