Part A
AD8065ARZ
ADI公司
- Lifecycle
- Active
- Stock
- 6652 件
- Package
- SOIC-8
- Series
- 線性放大器-儀器、運算放大器、緩衝放大器
Replacement verdict
Compatible functional replacement candidate
The AD8065ARZ and AD8062ARZ are both single-supply, rail-to-rail output voltage feedback operational amplifiers from the same Analog Devices AD806x family, sharing identical SOIC-8 packaging and comparable AC performance. However, the AD8065ARZ is a single-channel device while the AD8062ARZ is a dual-channel device, so the AD8062ARZ can serve as a functional substitute only when the second channel is unused or the board layout accommodates the additional channel; designers must verify channel count, quiescent current, and per-channel supply current against the target application before committing to a drop-in replacement.
Channel Count
Validation required
Package Type
High match
Supply Voltage Range
High match
Quiescent Current
Validation required
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 | AD8062ARZ | Why it matters |
|---|---|---|---|
| Number of Amplifiers | 1 | 2 | Channel count determines how many independent signal paths can be processed; a dual amplifier can replace two singles in space-constrained designs. |
| Gain Bandwidth Product | 145 MHz | 80 MHz | GBWP sets the maximum frequency at which the amplifier provides useful gain; lower bandwidth may limit high-speed signal fidelity. |
| -3 dB Bandwidth (G = +1) | 145 MHz | 80 MHz | Closed-loop bandwidth directly affects the maximum signal frequency the part can pass without significant attenuation. |
| Slew Rate | 180 V/µs | 50 V/µs | Slew rate limits how fast the output can respond to large signal steps; lower slew rate causes distortion on fast, large-amplitude signals. |
| Input Voltage Noise Density | 7 nV/√Hz | 16 nV/√Hz | Lower input noise improves signal-to-noise ratio in low-level signal applications; the higher-noise part may degrade precision measurements. |
| Quiescent Current per Amplifier | 6.4 mA | 6.8 mA | Supply current affects power budget and thermal load; differences impact battery life and heat dissipation in portable or dense designs. |
| Package | 8-Lead SOIC | 8-Lead SOIC | Package footprint and pinout must match for board-level drop-in compatibility; identical packages simplify substitution. |
| Supply Voltage Range | 5 V to 24 V | 2.7 V to 24 V | The minimum supply voltage determines compatibility with low-voltage systems; the wider low-end range of the dual part supports lower-voltage rails. |
| Input Bias Current | 6 pA | 6 pA | Very low input bias current minimizes offset errors in high-impedance circuits; matching values indicate similar input stage behavior. |
| Operating Temperature Range | -40 °C to +85 °C | -40 °C to +85 °C | Identical temperature ratings confirm both parts suit the same environmental conditions and industrial-grade applications. |
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Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | AD8065ARZ | AD8062ARZ |
|---|---|---|
| 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 | 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 AD8062ARZ?
The AD8065ARZ is a single, high-performance, fast FET-input operational amplifier, while the AD8062ARZ is a dual version of the same amplifier family. Both are offered in an 8-lead SOIC package, but the AD8065ARZ uses the package for a single amplifier with standard pinout, whereas the AD8062ARZ integrates two independent amplifiers in the same 8-lead footprint.
Are the AD8065ARZ and AD8062ARZ pin-compatible?
No. Although both devices are supplied in an 8-lead SOIC package, the pin assignments differ because the AD8065ARZ is a single amplifier and the AD8062ARZ is a dual amplifier. The AD8062ARZ uses the standard dual op-amp pinout, so the two parts are not drop-in replacements for each other.
What are the main AC specifications of the AD8065ARZ and AD8062ARZ?
Both amplifiers share the same core design and offer a 145 MHz unity-gain bandwidth (−3 dB) and a 180 V/µs slew rate. These fast FET-input characteristics make both devices suitable for high-speed signal conditioning, active filtering, and buffering applications.
What is the input bias current of the AD8065ARZ and AD8062ARZ?
Both devices feature a very low input bias current of 6 pA typical, which is a key advantage of their FET input stage. This makes them well suited for high-impedance sensor interfaces and precision applications where input current errors must be minimized.
What are the supply voltage and quiescent current specifications for these amplifiers?
Both the AD8065ARZ and AD8062ARZ operate from a single supply of 5 V to 24 V or a dual supply of ±2.5 V to ±12 V. The AD8065ARZ (single) draws a typical quiescent current of 6.4 mA, while the AD8062ARZ (dual) draws a typical quiescent current of 13 mA, reflecting the two amplifier channels.
Can the AD8065ARZ and AD8062ARZ be used in low-voltage single-supply designs?
Yes. Both amplifiers are specified for operation from a single 5 V supply and feature rail-to-rail output swing, making them suitable for low-voltage, single-supply systems. Their input common-mode voltage range and output swing should be verified against the datasheet for the specific signal levels in the target design.
Which applications are best suited for the AD8065ARZ versus the AD8062ARZ?
The AD8065ARZ is preferred when a single high-speed FET-input amplifier channel is required, while the AD8062ARZ is chosen when two matched amplifier channels are needed in a compact 8-lead SOIC package. Typical uses for both include high-speed filtering, ADC driving, photodiode preamplification, and buffering in instrumentation and communication systems.