Part A
AD8065ARZ
Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 6652 PCS
- Package
- SOIC-8
- Series
- Linear - Amplificadores - Instrumentação, OP Amps, Buffer Amps
Replacement verdict
Not a drop-in replacement
The AD8065ARZ and AD8062AR-REEL are not drop-in replacements for one another. Although both are high-speed voltage-feedback operational amplifiers from the same manufacturer family, they differ in channel count, package and pinout, supply voltage range, and quiescent current, so a direct board-level substitution is not possible without design changes.
Different channel count
Different package and pinout
Different supply voltage range
Different quiescent current
Parts at a glance
Part B
AD8062AR-REEL
Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 8705 PCS
- Package
- SOIC-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 | AD8065ARZ | AD8062AR-REEL | Why it matters |
|---|---|---|---|
| Number of Amplifiers | 1 | 2 | Determines how many independent signal channels are available in a single package; a dual amplifier can replace two singles but not vice versa. |
| Gain Bandwidth Product | 145 MHz | 80 MHz | Sets the maximum frequency at which the amplifier can provide useful gain; lower bandwidth limits high-speed signal processing capability. |
| -3 dB Bandwidth (G = +1) | 145 MHz | 80 MHz | Indicates the unity-gain small-signal bandwidth, directly affecting the maximum usable signal frequency in buffer configurations. |
| Slew Rate | 180 V/µs | 50 V/µs | Determines how fast the output can respond to large signal steps; higher slew rate supports larger, faster waveforms without distortion. |
| Input Voltage Noise Density | 7 nV/√Hz | 16 nV/√Hz | Lower noise density improves signal-to-noise ratio in low-level signal applications; the higher-noise part may degrade precision measurements. |
| Supply Current per Amplifier | 6.4 mA | 6.8 mA | Affects power budget and thermal design; slightly higher current per amplifier impacts total system power consumption. |
| Input Offset Voltage (Max) | 1.5 mV | 6 mV | DC accuracy parameter; larger offset voltage introduces greater error in precision and low-frequency applications. |
| Package / Pin Count | 8-Lead SOIC | 8-Lead SOIC | Footprint and pinout compatibility affect board layout; identical package allows drop-in replacement but pin functions differ between single and dual. |
| Supply Voltage Range | 5 V to 24 V | 2.7 V to 12 V | Defines the allowable power supply; the dual part cannot operate at the higher supply voltages supported by the single. |
| Output Current (Typical) | 35 mA | 30 mA | Determines drive capability for loads; lower output current may limit ability to drive low-impedance loads or cables. |
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Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | AD8065ARZ | AD8062AR-REEL |
|---|---|---|
| Supplier | - | Rochester Electronics, LLC |
| Part Status | Active | Obsolete |
| Amplifier Type | Voltage Feedback | Voltage Feedback |
| Number of Circuits | 1 | 2 |
| 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 (x2 Channels) |
| 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 AD8065ARZ and AD8062AR-REEL?
The AD8065ARZ is a single, high-performance, fast FET-input operational amplifier in an 8-lead SOIC package, while the AD8062AR-REEL is a dual, low-cost, high-speed amplifier supplied in tape-and-reel packaging. The AD8065ARZ offers lower input bias current and voltage noise, whereas the AD8062AR-REEL integrates two amplifiers per package for dual-channel designs.
Are the AD8065ARZ and AD8062AR-REEL pin-compatible?
No. The AD8065ARZ is a single amplifier in an 8-lead SOIC pinout, and the AD8062AR-REEL is a dual amplifier in an 8-lead SOIC pinout. Their pin functions differ, so they are not direct drop-in replacements for each other.
What are the supply voltage ranges for these amplifiers?
Both the AD8065ARZ and AD8062AR-REEL operate from a single supply of 5 V to 24 V or a dual supply of ±2.5 V to ±12 V, as specified in the Analog Devices datasheets.
How do the bandwidth specifications compare?
The AD8065ARZ provides a −3 dB bandwidth of 145 MHz (G = +1), while the AD8062AR-REEL provides a −3 dB bandwidth of 80 MHz (G = +1). The AD8065ARZ therefore offers higher small-signal bandwidth for single-channel applications.
Which part is better suited for low-noise signal conditioning?
The AD8065ARZ is better suited for low-noise signal conditioning because it specifies lower input voltage noise (7 nV/√Hz at 10 kHz) and lower input bias current (6 pA typical) compared with the AD8062AR-REEL, which specifies 9.5 nV/√Hz input voltage noise and higher input bias current.
What packaging options are available for each device?
The AD8065ARZ is supplied in an 8-lead SOIC package. The AD8062AR-REEL is supplied in an 8-lead SOIC package in tape-and-reel format for automated assembly. Neither part is offered in the other's package format under these specific orderable part numbers.
Can the AD8062AR-REEL replace two AD8065ARZ devices in a design?
Functionally, the AD8062AR-REEL provides two amplifiers in one package, but it is not a direct substitute for two AD8065ARZ devices. The AD8062AR-REEL has lower bandwidth, higher input noise, and different pin assignments, so the circuit must be revalidated against the AD8062AR-REEL datasheet before substitution.
What are the typical operating temperature ranges for these components?
Both the AD8065ARZ and AD8062AR-REEL are specified for operation over the industrial temperature range of −40°C to +85°C, per the Analog Devices datasheets.