Part A
AD8065ARZ
Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 6652 Stückzahl
- Package
- SOIC-8
- Series
- Linear-Verstärker.Instrumentation, OP-Verstärker, Pufferverstärker
Replacement verdict
Compatible functional replacement candidate
The AD8065ARZ and AD8066ARZ-RL share the same FastFET op-amp core, supply range, and SOIC-8 package family, but differ in channel count and quiescent current. The AD8066ARZ-RL is a dual-channel device and is not a pin-for-pin substitute for the single-channel AD8065ARZ; substitution is only viable where a dual amplifier in the same footprint and supply envelope is acceptable, and the resulting power budget and board layout must be validated.
Channel Count
Validation required
Package Type
High match
Supply Voltage Range
High match
Quiescent Current
Validation required
Parts at a glance
Part B
AD8066ARZ-RL
Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 3304 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 | AD8066ARZ-RL | Why it matters |
|---|---|---|---|
| Number of Amplifiers | 1 | 2 | Determines how many independent amplifier channels are available in a single package; a dual device can replace two singles but not vice versa. |
| Gain Bandwidth Product | 145 MHz | 145 MHz | Sets the maximum frequency at which the amplifier can provide useful closed-loop gain; matching values indicate comparable AC performance. |
| Slew Rate | 180 V/µs | 180 V/µs | Governs how fast the output can respond to large signal steps; identical slew rates mean similar large-signal transient behavior. |
| Input Voltage Noise Density | 7 nV/√Hz | 7 nV/√Hz | Determines the noise floor contributed by the amplifier; equal values mean comparable noise performance in low-level signal applications. |
| Input Offset Voltage (max) | 1.5 mV | 1.5 mV | Affects DC accuracy in precision signal chains; matching limits indicate equivalent offset error budgets. |
| Supply Voltage Range | 5 V to 24 V | 5 V to 24 V | Defines the allowable power supply window; identical ranges ensure the parts are interchangeable across the same system rails. |
| Quiescent Current per Amplifier | 6.4 mA | 6.4 mA | Impacts power budget and thermal design; equal per-amplifier current means the dual device draws roughly twice the total supply current. |
| Package | 8-Lead SOIC | 8-Lead SOIC | Footprint and pinout must match for board-level substitution; both share the same SOIC outline but pin functions differ between single and dual. |
| Pin Configuration | Single op-amp pinout | Dual op-amp pinout | Even with the same package, single and dual devices have different pin assignments, so a direct drop-in replacement is not possible without layout changes. |
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 | AD8066ARZ-RL |
|---|---|---|
| Supplier | - | Analog Devices Inc.,Rochester Electronics, LLC |
| Series | FastFET™ | FastFET™ |
| Part Status | Active | Active |
| Amplifier Type | Voltage Feedback | Voltage Feedback |
| Number of Circuits | 1 | 2 |
| Output Type | Rail-to-Rail | Rail-to-Rail |
| Slew Rate | 180V/µs | 180V/µs |
| -3 dB Bandwidth | 145 MHz | 155 MHz |
| Current - Input Bias | 3 pA | 3 pA |
| Voltage - Input Offset | 400 µV | 400 µV |
| Supply Current | 6.6mA | 6.6mA (x2 Channels) |
| Current - Output / Channel | 30 mA | 30 mA |
| Voltage - Supply Span(Min) | 5 V | 5 V |
| Voltage - Supply Span(Max) | 24 V | 24 V |
| Operating Temperature | -40°C ~ 85°C | -40°C ~ 85°C |
| Mounting Type | Surface Mount | Surface Mount |
Frequently asked questions
What is the primary difference between the AD8065ARZ and the AD8066ARZ-RL?
The AD8065ARZ is a single-channel (one amplifier) voltage feedback operational amplifier in an 8-lead SOIC package, while the AD8066ARZ-RL is a dual-channel (two amplifiers) version of the same amplifier family, also supplied in an 8-lead SOIC package and provided in tape-and-reel format (RL).
Are the AD8065ARZ and AD8066ARZ-RL pin-compatible in the same SOIC-8 footprint?
No. Although both use an 8-lead SOIC package, the pinouts differ because the AD8065 is a single amplifier and the AD8066 is a dual amplifier. The AD8065 uses pins for offset null and other single-amplifier functions, whereas the AD8066 assigns pins to the second amplifier channel. They are not direct drop-in replacements for each other.
Do the AD8065ARZ and AD8066ARZ-RL share the same gain bandwidth and slew rate specifications?
Yes. Both devices are members of the same AD806x amplifier family and share the same core AC specifications, including a 145 MHz gain bandwidth product (−3 dB) and a 180 V/µs slew rate, as specified in the Analog Devices datasheet.
What is the difference in quiescent supply current between the two parts?
The AD8065ARZ (single) typically draws approximately 6.4 mA per amplifier, while the AD8066ARZ-RL (dual) typically draws approximately 6.4 mA per amplifier as well, resulting in roughly 12.8 mA total for the dual device. The per-amplifier quiescent current is essentially the same across the family.
What does the "RL" suffix on the AD8066ARZ-RL indicate?
The "RL" suffix denotes tape-and-reel packaging, which is the standard format for automated pick-and-place assembly lines. The AD8065ARZ is typically supplied in tube or tray format unless a reel-specific ordering code is selected. The electrical performance of the device is unaffected by the packaging suffix.
Can the AD8066ARZ-RL be used to replace two AD8065ARZ devices in a design?
Functionally, the AD8066ARZ-RL provides two amplifiers with the same performance characteristics as the AD8065ARZ, so it can replace two single amplifiers in terms of signal-chain performance. However, the PCB layout, pinout, and package footprint must be redesigned, since the dual device does not match the single device's pin configuration.
What are the common supply voltage and input bias current specifications for both parts?
Both the AD8065ARZ and AD8066ARZ-RL operate from a single supply of 5 V to 24 V or a dual supply of ±2.5 V to ±12 V. The input bias current is typically 6 pA (FET input), as specified in the Analog Devices datasheet for the AD806x family.