Part A
AD8028ARZ
ADI公司
- Lifecycle
- Active
- Stock
- 5537 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 AD8028ARZ and AD8022AR-REEL are both dual high-speed voltage-feedback operational amplifiers from Analog Devices sharing a compatible SOIC-8 footprint and similar supply voltage ranges, making the AD8028ARZ a viable functional replacement candidate for the AD8022AR-REEL in many designs. However, the AD8028ARZ offers lower input voltage noise and higher slew rate while consuming more supply current per amplifier, so engineers should validate power budget, thermal headroom, and noise-sensitive signal-chain requirements before substituting in production.
Amplifier Channel Count
High match
Package and Pinout
High match
Supply Current
Validation required
Noise and Bandwidth Performance
Validation required
Parts at a glance
Part B
AD8022AR-REEL
ADI公司
- Lifecycle
- Active
- Stock
- 9589 件
- Package
- SOIC-8
- Series
- 線性放大器-儀器、運算放大器、緩衝放大器
Key differences
Rows are prioritized by design impact. Highlighted values require attention during substitution.
Key electrical and mechanical differences between the two devices
| Parameter | AD8028ARZ | AD8022AR-REEL | Why it matters |
|---|---|---|---|
| Number of Amplifiers | 2 | 2 | Both are dual op-amps, so channel count is compatible for dual-channel signal chains. |
| -3 dB Bandwidth | 190 MHz | 100 MHz | Higher bandwidth supports faster signal processing and wider frequency response in the application. |
| Slew Rate | 100 V/µs | 50 V/µs | Slew rate determines how fast the amplifier can respond to large signal steps; higher is better for high-speed transients. |
| Input Voltage Noise Density | 4.3 nV/√Hz | 2.5 nV/√Hz | Lower input noise improves signal-to-noise ratio in low-level signal amplification. |
| Supply Voltage Range | 2.7 V to 12 V | 5 V to 12 V | A wider supply range allows operation in lower-voltage systems; the AD8028 supports lower supply rails. |
| Quiescent Current (per amplifier) | 1.4 mA | 4 mA | Lower quiescent current reduces power consumption, important for power-sensitive designs. |
| Input Offset Voltage (max) | 1 mV | 1.5 mV | Lower offset voltage improves DC accuracy in precision signal conditioning. |
| Package | 8-Lead SOIC | 8-Lead SOIC | Identical package footprint allows direct board-level substitution without layout changes. |
| Operating Temperature Range | -40°C to +125°C | -40°C to +85°C | A wider temperature range supports use in harsher environments and industrial applications. |
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 | AD8028ARZ | AD8022AR-REEL |
|---|---|---|
| Supplier | - | Arcotek,Rochester Electronics, LLC |
| Part Status | Active | Obsolete |
| Amplifier Type | General Purpose | Voltage Feedback |
| Number of Circuits | 2 | 2 |
| Slew Rate | 100V/µs | 50V/µs |
| Gain Bandwidth Product | - | 100 MHz |
| -3 dB Bandwidth | 190 MHz | 130 MHz |
| Current - Input Bias | 4 µA | 2.5 µA |
| Voltage - Input Offset | 200 µV | 1.5 mV |
| Supply Current | 6.5mA (x2 Channels) | 4mA |
| Current - Output / Channel | 120 mA | 55 mA |
| Voltage - Supply Span(Min) | 2.7 V | 4.5 V |
| Voltage - Supply Span(Max) | 12 V | 26 V |
| Operating Temperature | -40°C ~ 125°C | -40°C ~ 85°C |
| Mounting Type | Surface Mount | Surface Mount |
| Output Type | Rail-to-Rail | - |
Frequently asked questions
What are the primary differences between the AD8028ARZ and the AD8022AR-REEL?
The AD8028ARZ is a dual, low-noise, high-speed voltage feedback operational amplifier specified for a supply voltage range of 2.7 V to 12 V, featuring rail-to-rail output and a typical -3 dB bandwidth of 190 MHz. The AD8022AR-REEL is a dual, low-noise, high-speed voltage feedback operational amplifier specified for a supply voltage range of ±5 V to ±12 V, featuring a typical -3 dB bandwidth of 130 MHz and a 100 MHz 0.1 dB gain flatness. The AD8028ARZ is supplied in a 8-lead SOIC package (ARZ suffix), while the AD8022AR-REEL is supplied in an 8-lead SOIC package on a 13-inch reel.
Are the AD8028ARZ and AD8022AR-REEL pin-compatible?
Yes. Both devices are dual operational amplifiers offered in an 8-lead SOIC package with the standard dual op-amp pinout: Pin 1 = OUT A, Pin 2 = -IN A, Pin 3 = +IN A, Pin 4 = V-, Pin 5 = +IN B, Pin 6 = -IN B, Pin 7 = OUT B, Pin 8 = V+. This pin configuration is verified in the respective manufacturer datasheets.
Can the AD8028ARZ be used as a direct drop-in replacement for the AD8022AR-REEL?
Not unconditionally. Although both are dual op-amps in an 8-lead SOIC package with the same pinout, the AD8028ARZ is specified for a 2.7 V to 12 V supply range with rail-to-rail output, while the AD8022AR-REEL is specified for ±5 V to ±12 V supplies. The AD8028ARZ has a higher typical -3 dB bandwidth (190 MHz vs. 130 MHz) and different input bias current and noise specifications. Circuit performance must be revalidated against the AD8028ARZ datasheet before substitution.
What are the supply voltage requirements for each device?
The AD8028ARZ operates from a single supply of 2.7 V to 12 V or a dual supply of ±1.35 V to ±6 V. The AD8022AR-REEL operates from a dual supply of ±5 V to ±12 V. Designs using the AD8022AR-REEL at ±5 V or higher are within the AD8028ARZ supply range, but the AD8028ARZ supports lower supply voltages that the AD8022AR-REEL does not.
How do the bandwidth and slew rate specifications compare?
Per the manufacturer datasheets, the AD8028ARZ has a typical -3 dB bandwidth of 190 MHz and a slew rate of 100 V/µs. The AD8022AR-REEL has a typical -3 dB bandwidth of 130 MHz, a 0.1 dB gain flatness of 100 MHz, and a slew rate of 50 V/µs. The AD8028ARZ therefore offers higher bandwidth and slew rate, while the AD8022AR-REEL provides specified gain flatness suitable for video and IF applications.
How do the noise specifications of the AD8028ARZ and AD8022AR-REEL compare?
Both devices are low-noise amplifiers. The AD8028ARZ specifies a typical input voltage noise density of 4.3 nV/√Hz at 1 kHz. The AD8022AR-REEL specifies a typical input voltage noise density of 2.5 nV/√Hz at 1 kHz. The AD8022AR-REEL therefore has lower input voltage noise density, which may be preferable in low-noise signal-chain applications.
What are the input bias current and offset voltage specifications?
The AD8028ARZ specifies a typical input bias current of 1.5 µA and a typical input offset voltage of 0.5 mV. The AD8022AR-REEL specifies a typical input bias current of 2.5 µA and a typical input offset voltage of 0.5 mV. Both are bipolar-input amplifiers, so bias current is relatively high compared with FET-input op-amps, and source impedance should be considered in both cases.
What packaging and ordering differences exist between the AD8028ARZ and AD8022AR-REEL?
Both devices are offered in an 8-lead SOIC package. The AD8028ARZ suffix indicates an 8-lead SOIC package in tube form. The AD8022AR-REEL suffix indicates an 8-lead SOIC package supplied on a 13-inch tape-and-reel for automated assembly. The reel quantity and packaging format are the primary ordering differences; electrical performance is defined by the respective datasheets.