Part A
AD8062ARMZ-R7
Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 5120 PCS
- Package
- MSOP-8
- Series
- Linear - Amplificadores - Instrumentação, OP Amps, Buffer Amps
Replacement verdict
Compatible functional replacement candidate
The AD8062ARMZ-R7 and AD8066ARM are both dual high-speed voltage-feedback operational amplifiers from Analog Devices in the same 8-lead MSOP package, sharing a common supply range and similar bandwidth class. The AD8062ARMZ-R7 is a lower-power variant with reduced quiescent current, while the AD8066ARM is a higher-current, higher-output-drive device. They are functionally related but not identical, so the substitution requires validation of load drive, power budget, and dynamic performance in the target circuit.
Amplifier Configuration
Validation required
Supply Voltage Range
Validation required
Quiescent Current
Validation required
Package Type
High match
Parts at a glance
Part B
AD8066ARM
Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 2176 PCS
- Package
- TSSOP-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 | AD8062ARMZ-R7 | AD8066ARM | Why it matters |
|---|---|---|---|
| Number of Amplifiers | 2 | 2 | Both are dual amplifiers, so channel count is compatible for substitution. |
| Gain Bandwidth Product | 300 MHz | 145 MHz | Higher bandwidth affects achievable signal frequency and settling behavior in the application. |
| -3 dB Bandwidth | 320 MHz | 145 MHz | The small-signal bandwidth determines the maximum usable frequency range of the amplifier. |
| Slew Rate | 650 V/µs | 180 V/µs | Slew rate limits large-signal response speed and distortion at high frequencies. |
| Input Voltage Noise Density | 8.5 nV/√Hz | 7 nV/√Hz | Lower noise density improves signal-to-noise ratio in low-level signal applications. |
| Supply Voltage Range | 2.7 V to 8 V | 5 V to 24 V | Operating voltage range must match the system supply for the part to function correctly. |
| Supply Current per Amplifier | 6.8 mA | 6.4 mA | Quiescent current affects power budget and thermal considerations in the design. |
| Input Offset Voltage | 1 mV | 0.5 mV | Offset voltage impacts DC accuracy and error in precision signal chains. |
| Package / Mounting | 8-Lead MSOP (Surface Mount) | 8-Lead MSOP (Surface Mount) | Matching package and footprint allows drop-in replacement on the same PCB. |
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-R7 | AD8066ARM |
|---|---|---|
| Supplier | - | Analog Devices Inc.,Rochester Electronics, LLC |
| Series | - | FastFET™ |
| Part Status | Active | Obsolete |
| 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 |
Frequently asked questions
What are the key differences between the AD8062ARMZ-R7 and the AD8066ARM?
The AD8062ARMZ-R7 is a dual, low-cost, high-speed voltage feedback amplifier supplied in an 8-lead MSOP (RM) package and provided in 7-inch reel packaging (R7). The AD8066ARM is a dual, high-performance, FET-input voltage feedback amplifier supplied in an 8-lead MSOP (RM) package. The AD8062 is optimized for lower cost and lower power, while the AD8066 offers lower input bias current and lower noise due to its FET input stage.
Are the AD8062ARMZ-R7 and AD8066ARM pin-compatible?
Both devices are offered in the same 8-lead MSOP (RM) package, and their pinouts follow the standard dual op-amp configuration (OUT1, -IN1, +IN1, V-, +IN2, -IN2, OUT2, V+). However, pin compatibility alone does not guarantee functional interchangeability; the surrounding circuit must be validated against each device's datasheet specifications.
How do the input bias current specifications compare between the AD8062 and AD8066?
The AD8066 is a FET-input amplifier with very low input bias current, typically in the picoampere range, making it suitable for high-impedance sensor interfaces. The AD8062 uses a bipolar input stage with input bias current in the microampere range. Designers should consult the respective datasheets for the exact tested limits over temperature.
How do the bandwidth and slew rate of the AD8062ARMZ-R7 and AD8066ARM compare?
Both are high-speed voltage feedback amplifiers. The AD8062 offers approximately 300 MHz -3 dB bandwidth and 160 V/µs slew rate, while the AD8066 offers approximately 145 MHz -3 dB bandwidth and 180 V/µs slew rate. Exact values depend on gain configuration and supply voltage, so the datasheet conditions should be referenced.
What supply voltage ranges do the AD8062ARMZ-R7 and AD8066ARM support?
Both devices operate from a single supply of approximately 5 V to 12 V or a dual supply of approximately ±2.5 V to ±6 V. The AD8066 is specified over a slightly wider supply range in some parameters. Always verify the absolute maximum ratings and recommended operating conditions in the manufacturer datasheet before design.
Can the AD8062ARMZ-R7 be used as a drop-in replacement for the AD8066ARM in an existing design?
Not without validation. Although both are dual op-amps in the same 8-lead MSOP package, they differ in input stage topology, input bias current, noise, bandwidth, and slew rate. A drop-in replacement requires confirming that the AD8062's bipolar input current and noise characteristics meet the application requirements and that stability with the existing feedback network is verified.
What does the "R7" suffix indicate on the AD8062ARMZ-R7?
The "R7" suffix denotes tape-and-reel packaging in a 7-inch reel, typically with 500 units per reel, as defined in the manufacturer's ordering guide. The "Z" indicates RoHS-compliant lead finish. The AD8066ARM is supplied in standard tube or reel packaging depending on the ordering part number; the base part number alone does not specify reel size.
Which device is better suited for high-impedance sensor front ends?
The AD8066ARM is generally better suited for high-impedance sensor front ends because its FET input stage provides very low input bias current, minimizing offset errors from source impedance. The AD8062's bipolar input stage draws higher bias current, which can produce larger voltage offsets across high source impedances.