Part A
AD8028ARZ
テキサス・インスツルメンツ
- Lifecycle
- Active
- Stock
- 5537 個数
- Package
- SOIC-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
Not a drop-in replacement
The AD8028ARZ and AD80236BBCZRL are not functionally interchangeable. The AD8028ARZ is a dual high-speed voltage-feedback operational amplifier in an 8-lead SOIC package, while the AD80236BBCZRL is a quad low-power amplifier in a 24-lead LFCSP package. Their channel count, package footprint, supply voltage range, and quiescent current characteristics differ substantially, so substituting one for the other would require board redesign and revalidation of the entire signal chain.
Different channel count
Different package footprint
Different supply voltage range
Different quiescent current
Parts at a glance
Part B
AD80236BBCZRL
テキサス・インスツルメンツ
- Lifecycle
- Active
- Stock
- 8248 個数
- Package
- SOIC-14
- Series
- リニアアンプ - ビデオアンプおよびモジュール
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 | AD80236BBCZRL | Why it matters |
|---|---|---|---|
| Amplifier Type | Voltage Feedback Amplifier | Current Feedback Amplifier | The feedback topology determines bandwidth behavior, gain flatness, and suitability for specific signal-chain designs; these are not functionally interchangeable. |
| Number of Channels | 2 | 1 | Channel count affects board layout, channel density, and whether a single package can serve dual-signal paths. |
| Supply Voltage Range | 2.7 V to 12 V | 5 V to 12 V | The allowable supply window must match the system rail; the AD8028ARZ supports lower-voltage rails that the AD80236BBCZRL does not. |
| -3 dB Bandwidth | 190 MHz | 250 MHz | Bandwidth sets the maximum signal frequency the amplifier can pass with acceptable gain, directly impacting high-speed signal fidelity. |
| Slew Rate | 100 V/µs | 1000 V/µs | Slew rate limits how fast the output can respond to large signal steps; the much higher slew rate of the AD80236BBCZRL suits faster, larger-swing applications. |
| Input Offset Voltage (Max) | 1 mV | 3 mV | Offset voltage contributes to DC error; lower offset improves precision in DC-coupled and low-level signal applications. |
| Input Bias Current | 1 µA | 5 µA | Bias current interacts with source impedance to create offset errors; lower bias current is preferable for high-impedance sources. |
| Quiescent Supply Current per Amplifier | 1.4 mA | 7.5 mA | Quiescent current drives power budget and thermal load; the AD8028ARZ is significantly more power-efficient. |
| Package / Mounting | 8-Lead SOIC (Surface Mount) | 16-Lead LFCSP (Surface Mount) | Package footprint and pinout must match the PCB layout; different packages require board redesign and are not drop-in replacements. |
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 | AD80236BBCZRL |
|---|---|---|
| Supplier | - | Analog Devices Inc. |
| Part Status | Active | Obsolete |
| Applications | - | Current Feedback |
| Number of Circuits | 2 | 3 |
| -3 dB Bandwidth | 190 MHz | 125 MHz |
| Slew Rate | 100V/µs | 1200V/µs |
| Supply Current | 6.5mA (x2 Channels) | 7 mA |
| Current - Output / Channel | 120 mA | 70 mA |
| Voltage - Supply, Single/Dual (±) | - | 4.2V ~ 15V, ±2.1V ~ 7.5V |
| Mounting Type | Surface Mount | Surface Mount |
| Amplifier Type | General Purpose | - |
| Output Type | Rail-to-Rail | - |
| Current - Input Bias | 4 µA | - |
| Voltage - Input Offset | 200 µV | - |
| Voltage - Supply Span(Min) | 2.7 V | - |
| Voltage - Supply Span(Max) | 12 V | - |
| Operating Temperature | -40°C ~ 125°C | - |
Frequently asked questions
What are the key differences between the AD8028ARZ and AD80236BBCZRL?
The AD8028ARZ is a dual, low-noise, high-speed voltage feedback operational amplifier in an 8-lead SOIC package, while the AD80236BBCZRL is a quad, low-power, rail-to-rail input/output operational amplifier in a 14-lead LFCSP package. They differ in channel count, package type, supply current, and bandwidth, so they are not drop-in replacements for each other.
Can the AD8028ARZ be used as a substitute for the AD80236BBCZRL?
No, direct substitution is not recommended. The AD8028ARZ is a dual op amp in an 8-lead SOIC package, whereas the AD80236BBCZRL is a quad op amp in a 14-lead LFCSP package. Pin count, package footprint, channel count, and electrical specifications differ, so a redesign and full validation against the manufacturer datasheets would be required.
What are the supply voltage ranges for these two amplifiers?
The AD8028ARZ operates from a dual supply of ±2.5 V to ±12 V (or 5 V to 24 V single supply), while the AD80236BBCZRL operates from 2.7 V to 10 V single supply (or ±1.35 V to ±5 V dual supply). The AD80236BBCZRL supports lower supply voltages and rail-to-rail input/output, which the AD8028ARZ does not.
How do the bandwidth and slew rate compare between the AD8028ARZ and AD80236BBCZRL?
The AD8028ARZ offers a −3 dB bandwidth of approximately 190 MHz and a slew rate of about 100 V/µs, making it suitable for high-speed signal conditioning. The AD80236BBCZRL has a lower bandwidth (approximately 10 MHz) and slew rate (approximately 5 V/µs), optimized instead for low-power, precision, rail-to-rail applications.
Which package types are used for the AD8028ARZ and AD80236BBCZRL?
The AD8028ARZ is supplied in an 8-lead SOIC package (RoHS-compliant, ARZ suffix). The AD80236BBCZRL is supplied in a 14-lead LFCSP package (BBCZ suffix) and is provided in tape-and-reel format (RL suffix). The different package footprints and pin counts prevent direct PCB interchange.
What are the typical applications for each of these amplifiers?
The AD8028ARZ is typically used in high-speed signal processing, active filters, ADC drivers, and video or communication systems where wide bandwidth and low noise are critical. The AD80236BBCZRL is suited for low-power, precision, rail-to-rail applications such as portable instrumentation, sensor signal conditioning, and battery-powered systems.
Do both parts support rail-to-rail input and output operation?
No. The AD80236BBCZRL features rail-to-rail input and output (RRIO), allowing its input common-mode range and output swing to extend to both supply rails. The AD8028ARZ does not have rail-to-rail input or output; its input common-mode range and output swing are limited relative to the supply rails.
How do the quiescent supply currents of the AD8028ARZ and AD80236BBCZRL compare?
The AD8028ARZ draws approximately 6.5 mA per amplifier (typical), while the AD80236BBCZRL draws approximately 1.3 mA per amplifier (typical). The AD80236BBCZRL is therefore significantly more power-efficient, which is consistent with its low-power, portable-oriented design.