Part A
AD8062ARZ
Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 2406 Stückzahl
- Package
- SOIC-8
- Series
- Linear-Verstärker.Instrumentation, OP-Verstärker, Pufferverstärker
Replacement verdict
Compatible functional replacement candidate
The AD8062ARZ is a viable functional replacement candidate for the AD8066ARZ in many dual-channel signal-chain applications, sharing the same SOIC-8 footprint, dual voltage-feedback architecture, and comparable supply and bandwidth characteristics. However, designers must validate the lower quiescent current per amplifier and the reduced output drive capability against the specific load and thermal requirements of the target design before committing to substitution.
Package Type
High match
Channel Count
High match
Supply Current
Validation required
Output Drive Capability
Validation required
Parts at a glance
Part B
AD8066ARZ
Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 2596 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 | AD8062ARZ | Why it matters |
|---|---|---|---|
| Number of Amplifiers | 2 (Dual) | 2 (Dual) | Both are dual amplifiers, so channel count is equivalent for multi-channel signal chains. |
| -3 dB Bandwidth | 145 MHz | 80 MHz | Higher bandwidth supports faster signal processing and wider frequency response; the AD8066 offers roughly double the bandwidth. |
| Slew Rate | 180 V/µs | 50 V/µs | Slew rate limits large-signal transient response; the AD8066 handles much faster voltage swings. |
| Input Voltage Noise Density | 7 nV/√Hz | 16 nV/√Hz | Lower noise density improves SNR in low-level signal applications; the AD8066 is significantly quieter. |
| Supply Current per Amplifier | 6.4 mA | 6.8 mA | Quiescent current affects power budget; the two parts are close but the AD8062 draws slightly more. |
| Input Offset Voltage (Max) | 1.5 mV | 5 mV | Lower offset reduces DC error in precision circuits; the AD8066 provides tighter offset accuracy. |
| Supply Voltage Range | 5 V to 24 V | 2.7 V to 12 V | Operating range determines compatibility with system rails; the AD8066 supports higher supplies while the AD8062 works down to lower voltages. |
| Output Current (Typical) | 35 mA | 50 mA | Output drive capability affects ability to drive loads; the AD8062 can source/sink more current. |
| Package | 8-Lead SOIC | 8-Lead SOIC | Identical package and pinout allow drop-in board compatibility between the two parts. |
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 | AD8062ARZ | AD8066ARZ |
|---|---|---|
| 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 | 155 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 AD8066ARZ and AD8062ARZ?
The AD8066ARZ is a dual, high-performance, fast FET-input operational amplifier, while the AD8062ARZ is a dual, low-cost, high-speed voltage feedback amplifier. The AD8066ARZ offers lower input bias current and lower voltage noise, making it suitable for precision high-speed applications. The AD8062ARZ is optimized for cost-sensitive, high-speed signal processing with slightly higher input bias current and noise.
Are the AD8066ARZ and AD8062ARZ pin-compatible?
Yes, both devices are offered in the same 8-lead SOIC package (R-8 suffix) with identical pinout assignments, allowing them to share the same PCB footprint. However, designers must verify that the electrical performance differences are acceptable for the target application before substituting one for the other.
What are the supply voltage ranges for the AD8066ARZ and AD8062ARZ?
Both the AD8066ARZ and AD8062ARZ operate from a single supply of 5 V to 24 V or from dual supplies of ±2.5 V to ±12 V. This wide supply range makes both devices suitable for a variety of industrial, instrumentation, and signal conditioning applications.
How do the bandwidth specifications compare between the AD8066ARZ and AD8062ARZ?
The AD8066ARZ provides a -3 dB bandwidth of 145 MHz (G = +1) and a slew rate of 180 V/µs. The AD8062ARZ offers a -3 dB bandwidth of 300 MHz (G = +1) with a slew rate of 500 V/µs. The AD8062ARZ is therefore better suited for higher-speed signal paths, while the AD8066ARZ balances speed with lower noise and lower input bias current.
Which device has lower input bias current, the AD8066ARZ or the AD8062ARZ?
The AD8066ARZ features a typical input bias current of 6 pA, owing to its FET-input architecture. The AD8062ARZ has a typical input bias current of 1.5 µA. For high-impedance sensor interfaces or precision DC applications, the AD8066ARZ is the preferred choice.
How do the noise characteristics of the AD8066ARZ and AD8062ARZ differ?
The AD8066ARZ specifies a typical input voltage noise of 7 nV/√Hz at 10 kHz, while the AD8062ARZ specifies a typical input voltage noise of 16 nV/√Hz at 10 kHz. The AD8066ARZ provides lower noise performance, which is advantageous in low-level signal amplification and precision measurement applications.
What are the operating temperature ranges for the AD8066ARZ and AD8062ARZ?
Both the AD8066ARZ and AD8062ARZ are specified for operation over the industrial temperature range of -40°C to +85°C. This makes both devices suitable for use in industrial and commercial environments requiring robust thermal performance.
Can the AD8062ARZ be used as a drop-in replacement for the AD8066ARZ in precision applications?
Although the AD8062ARZ is pin-compatible with the AD8066ARZ, it is not a direct drop-in replacement for precision applications. The AD8062ARZ has significantly higher input bias current (1.5 µA vs. 6 pA) and higher input voltage noise (16 nV/√Hz vs. 7 nV/√Hz), which can degrade performance in high-impedance sensor interfaces and low-noise signal chains. The AD8066ARZ should be retained where precision DC and low-noise performance are critical.