Part A
AD8009AR
Компания Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 2831 ПКС
- Package
- SOIC-8
- Series
- Линейные - Усилетели - Приборы, ОП Усилетели, Буферные Усилетели
Replacement verdict
Compatible functional replacement candidate
The AD8009AR and AD8002AR are both high-speed current-feedback operational amplifiers from Analog Devices in the same 8-lead SOIC package, sharing a common supply range and similar bandwidth class. However, the AD8009AR is a single amplifier optimized for very high slew rate and low distortion, while the AD8002AR is a dual amplifier with lower per-channel quiescent current. The AD8002AR can serve as a functional substitute in dual-channel signal chains where board space and channel count are the priority, but the AD8009AR remains the preferred choice for single-channel applications demanding maximum slew rate and dynamic performance. Designers should validate closed-loop stability, gain-setting resistor values, and thermal headroom before committing to a drop-in swap.
Channel Count
Validation required
Package Type
High match
Slew Rate
Validation required
Supply Current
Validation required
Parts at a glance
Key differences
Rows are prioritized by design impact. Highlighted values require attention during substitution.
Key electrical and mechanical differences between the two devices
| Parameter | AD8009AR | AD8002AR | Why it matters |
|---|---|---|---|
| Number of Amplifiers | 1 | 2 | A single vs dual channel count determines board space, pinout compatibility, and whether one package can serve two signal paths. |
| -3 dB Bandwidth | 1 GHz | 600 MHz | Bandwidth sets the maximum signal frequency the amplifier can pass with acceptable gain, directly affecting high-speed signal fidelity. |
| Slew Rate | 5500 V/µs | 1200 V/µs | Slew rate limits how fast the output can respond to large signal steps; too low a value causes distortion on fast edges. |
| Supply Voltage Range | ±5 V to ±6 V (10 V to 12 V) | ±3 V to ±6 V (6 V to 12 V) | The allowable supply range determines whether the part can operate in a given system rail configuration without damage or reduced performance. |
| Quiescent Supply Current (per amplifier) | 16 mA | 7 mA | Quiescent current affects power budget and thermal load, which is critical in dense or power-sensitive designs. |
| Input Voltage Noise Density | 1.1 nV/√Hz | 2 nV/√Hz | Lower input noise improves signal-to-noise ratio in low-level signal amplification, affecting dynamic range. |
| Output Current | 175 mA | 80 mA | Output drive capability determines the ability to drive low-impedance loads such as cables or ADCs without clipping. |
| Package Type | 8-Lead SOIC | 8-Lead SOIC | Package and pinout compatibility governs whether the parts are drop-in replacements on an existing PCB footprint. |
| Operating Temperature Range | -40 °C to +85 °C | -40 °C to +85 °C | The temperature range confirms suitability for industrial or commercial environments and affects parameter drift over temperature. |
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Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | AD8009AR | AD8002AR |
|---|---|---|
| Supplier | - | Analog Devices Inc.,Rochester Electronics, LLC |
| Part Status | Obsolete | Obsolete |
| Amplifier Type | Current Feedback | Current Feedback |
| Number of Circuits | 1 | 2 |
| Slew Rate | 5500V/µs | 1200V/µs |
| -3 dB Bandwidth | 1 GHz | 600 MHz |
| Current - Input Bias | 50 µA | 5 µA |
| Voltage - Input Offset | 2 mV | 2 mV |
| Supply Current | 16mA | 10mA (x2 Channels) |
| Current - Output / Channel | 175 mA | 70 mA |
| Voltage - Supply Span(Min) | 5 V | 6 V |
| Voltage - Supply Span(Max) | 12 V | 12 V |
| Operating Temperature | -40°C ~ 85°C | -40°C ~ 85°C |
| Mounting Type | Surface Mount | Surface Mount |
Frequently asked questions
What are the primary differences between the AD8009AR and AD8002AR?
The AD8009AR is a single, ultra-high-speed current feedback amplifier optimized for very high slew rate and large signal bandwidth, while the AD8002AR is a dual current feedback amplifier with lower quiescent current per amplifier and lower bandwidth. The AD8009AR is typically used for single-channel high-speed signal paths, whereas the AD8002AR suits dual-channel or multi-channel designs requiring two matched amplifiers in one package.
Are the AD8009AR and AD8002AR pin-compatible?
No. The AD8009AR is a single amplifier in an 8-lead SOIC package, and the AD8002AR is a dual amplifier in an 8-lead SOIC package. Their pin functions differ because one device contains a single amplifier and the other contains two amplifiers, so the pinouts are not interchangeable.
Can the AD8009AR be directly substituted with the AD8002AR in an existing design?
No. Direct substitution is not possible because the devices differ in channel count, pinout, supply current, bandwidth, and gain characteristics. Any replacement requires schematic, layout, and performance validation against the manufacturer datasheets.
How do the bandwidth specifications of the AD8009AR and AD8002AR compare?
The AD8009AR provides higher large-signal bandwidth and faster slew rate than the AD8002AR, making it better suited for very high-speed single-channel applications. The AD8002AR offers lower bandwidth per amplifier but integrates two amplifiers, which is advantageous for compact dual-channel designs. Exact values should be confirmed from the respective Analog Devices datasheets.
What are the typical supply current requirements for each device?
The AD8009AR typically draws more quiescent supply current per amplifier than the AD8002AR, which is designed with lower power consumption per channel. Designers should verify the exact quiescent current specifications from the official Analog Devices datasheets for the target operating conditions.
Which applications are best suited for the AD8009AR versus the AD8002AR?
The AD8009AR is typically selected for high-speed single-channel applications such as video distribution, high-speed signal processing, and pulse amplification where maximum bandwidth and slew rate are critical. The AD8002AR is better suited for dual-channel applications such as differential signal chains, I/Q processing, and multi-channel video systems where two matched amplifiers and lower power per channel are beneficial.
Do both devices use current feedback amplifier architecture?
Yes. Both the AD8009AR and AD8002AR are current feedback amplifiers, which provide high slew rates and gain-independent bandwidth characteristics. However, their specific AC and DC performance parameters differ, so circuit design values must be recalculated when switching between them.