Part A
AD8022ARMZ
テキサス・インスツルメンツ
- Lifecycle
- Active
- Stock
- 7448 個数
- Package
- MSOP-8
- Series
- リニアアンプ - 計装用、オペアンプ、バッファアンプ
Replacement verdict
Compatible functional replacement candidate
The AD8022ARMZ and AD8021ARM are both high-speed voltage-feedback operational amplifiers from Analog Devices in the same 8-lead MSOP package, sharing a broadly similar signal-chain role. However, they differ in channel count, supply voltage range, and quiescent current, so the AD8021ARM should be treated as a functional candidate rather than a direct drop-in replacement. Designers must validate channel count requirements, supply headroom, and thermal budget before substituting.
Channel Count
Not compatible
Supply Voltage Range
Validation required
Quiescent Current
Validation required
Package Type
High match
Key differences
Rows are prioritized by design impact. Highlighted values require attention during substitution.
Key electrical and mechanical differences between the two devices
| Parameter | AD8022ARMZ | AD8021ARM | Why it matters |
|---|---|---|---|
| Number of Amplifiers | 2 (Dual) | 1 (Single) | Channel count determines whether one package can serve two signal paths or only one, directly affecting board layout and part count. |
| -3 dB Bandwidth | 100 MHz | 490 MHz | Bandwidth sets the maximum signal frequency the amplifier can handle with acceptable gain, critical for high-speed signal chains. |
| Slew Rate | 100 V/µs | 470 V/µs | Slew rate limits how fast the output can respond to large signal steps, affecting distortion and settling in fast applications. |
| Input Voltage Noise Density | 2.5 nV/√Hz | 2.1 nV/√Hz | Lower input noise improves signal-to-noise ratio in low-level signal amplification and precision front ends. |
| Supply Voltage Range | ±2.5 V to ±12 V | ±2.5 V to ±12 V | The allowable supply range determines compatibility with the system power rails and output swing headroom. |
| Quiescent Current per Amplifier | 4 mA | 7.8 mA | Quiescent current affects total power dissipation and thermal budget, important in dense or power-sensitive designs. |
| Package | 8-Lead MSOP | 8-Lead MSOP | Package footprint and pinout must match for a drop-in replacement on an existing PCB layout. |
| Output Current | 50 mA | 60 mA | Output drive capability determines the load the amplifier can drive, such as cables or low-impedance stages. |
| Operating Temperature Range | -40 °C to +85 °C | -40 °C to +85 °C | The temperature range confirms suitability for industrial and commercial environments and thermal derating needs. |
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 | AD8022ARMZ | AD8021ARM |
|---|---|---|
| Supplier | - | Analog Devices Inc.,Rochester Electronics, LLC |
| Part Status | Active | Obsolete |
| Amplifier Type | Voltage Feedback | Voltage Feedback |
| Number of Circuits | 2 | 1 |
| Slew Rate | 50V/µs | 460V/µs |
| -3 dB Bandwidth | 130 MHz | 560 MHz |
| Current - Input Bias | 2.5 µA | 7.5 µA |
| Voltage - Input Offset | 1.5 mV | 400 µV |
| Supply Current | 4mA | 7.8mA |
| Current - Output / Channel | 55 mA | 70 mA |
| Voltage - Supply Span(Min) | 4.5 V | 4.5 V |
| Voltage - Supply Span(Max) | 26 V | 24 V |
| Operating Temperature | -40°C ~ 85°C | -40°C ~ 85°C |
| Mounting Type | Surface Mount | Surface Mount |
| Gain Bandwidth Product | 100 MHz | - |