Part A
AD8051ARZ
Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 6365 PCS
- Package
- SOIC-8
- Series
- Linear - Amplificadores - Instrumentação, OP Amps, Buffer Amps
Replacement verdict
Not a drop-in replacement
The AD8051ARZ and AD8052LVISO8X are not drop-in replacements for one another. The AD8051ARZ is a single-channel high-speed voltage-feedback operational amplifier in an 8-lead SOIC package, while the AD8052LVISO8X is a dual-channel low-voltage rail-to-rail amplifier in an 8-lead SOIC package. Their channel count, supply voltage range, output swing characteristics, and quiescent current differ substantially, so substituting one for the other requires circuit redesign and validation.
Different channel count
Different supply voltage range
Different output swing
Different quiescent current
Parts at a glance
Part B
AD8052LVISO8X
MaxLinear, Inc.
- Lifecycle
- Active
- Stock
- 7553 PCS
- Package
- SOIC-8
- Series
- Linear - Amplificadores - Instrumentação, OP Amps, Buffer Amps
Key differences
Rows are prioritized by design impact. Highlighted values require attention during substitution.
Key electrical and mechanical differences between the two devices
| Parameter | AD8051ARZ | AD8052LVISO8X | Why it matters |
|---|---|---|---|
| Number of Amplifiers | 1 | 2 | Determines how many independent signal channels can be processed in one package; a dual amplifier can replace two singles but not vice versa. |
| Supply Voltage Range | 3 V to 12 V (single) / ±1.5 V to ±6 V (dual) | 2.7 V to 12 V (single) / ±1.35 V to ±6 V (dual) | Defines the operating voltage window; the LV variant supports slightly lower supply rails, affecting compatibility in low-voltage systems. |
| -3 dB Bandwidth (G = +1) | 110 MHz | 80 MHz | Sets the maximum usable signal frequency; a lower bandwidth limits high-speed signal fidelity and pulse response. |
| Slew Rate | 145 V/µs | 140 V/µs | Governs how fast the output can track large signal swings; critical for driving capacitive loads and fast transients. |
| Supply Current per Amplifier | 4.8 mA typ | 4.5 mA typ | Affects power budget and thermal design; lower current per amplifier improves efficiency in portable and dense designs. |
| Input Offset Voltage | 1.4 mV typ / 5 mV max | 1.7 mV typ / 6 mV max | Determines DC accuracy; larger offset introduces error in precision signal chains and sensor interfaces. |
| Package | 8-Lead SOIC | 8-Lead SOIC | Footprint and pinout compatibility affect PCB layout and drop-in substitutability between the two parts. |
| Output Current | 30 mA | 30 mA | Indicates drive capability for loads such as cables and ADC inputs; matching values support similar load-driving behavior. |
| Operating Temperature Range | -40 °C to +125 °C | -40 °C to +85 °C | Defines environmental limits; the narrower range of the LV part may restrict use in high-temperature applications. |
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Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | AD8051ARZ | AD8052LVISO8X |
|---|---|---|
| Supplier | - | MaxLinear, Inc. |
| Part Status | Active | Obsolete |
| Amplifier Type | Voltage Feedback | Voltage Feedback |
| Number of Circuits | 1 | 2 |
| Slew Rate | 170V/µs | 145V/µs |
| Gain Bandwidth Product | - | 90 MHz |
| -3 dB Bandwidth | 110 MHz | 260 MHz |
| Current - Input Bias | 1.4 µA | 3 µA |
| Voltage - Input Offset | 1.8 mV | 1.4 mV |
| Current - Output / Channel | 45 mA | 55 mA |
| Voltage - Supply Span(Min) | 3 V | 2.5 V |
| Voltage - Supply Span(Max) | 12 V | 5.5 V |
| Operating Temperature | -40°C ~ 125°C | -40°C ~ 85°C |
| Mounting Type | Surface Mount | Surface Mount |
| Output Type | Rail-to-Rail | - |
| Supply Current | 4.8mA | - |
Frequently asked questions
What are the key differences between the AD8051ARZ and AD8052LVISO8X?
The AD8051ARZ is a single, high-speed voltage-feedback operational amplifier in an 8-lead SOIC package, while the AD8052LVISO8X is a dual, low-voltage version in the same 8-lead SOIC package. The AD8051ARZ operates on a wider supply range and provides one amplifier per package, whereas the AD8052LVISO8X integrates two amplifiers and is optimized for lower supply voltages.
Are the AD8051ARZ and AD8052LVISO8X pin-compatible?
No. Although both devices use an 8-lead SOIC package, their pinouts differ because the AD8051ARZ is a single amplifier and the AD8052LVISO8X is a dual amplifier. The pin functions and PCB land patterns are not interchangeable, so a direct drop-in replacement is not possible without layout changes.
What supply voltage ranges do these two amplifiers support?
The AD8051ARZ is specified for operation on a dual supply of ±5 V or a single supply of 5 V to 12 V, depending on the exact grade. The AD8052LVISO8X is designed for lower-voltage operation, typically 2.7 V to 5.5 V single supply or ±1.35 V to ±2.75 V dual supply. Designers must verify the exact datasheet limits for the specific grade before use.
Can the AD8052LVISO8X replace the AD8051ARZ in an existing single-amplifier circuit?
Not directly. The AD8052LVISO8X contains two amplifiers in an 8-lead package, so only one channel could be used, and the pinout does not match the single AD8051ARZ. Additionally, the lower supply voltage range of the AD8052LVISO8X may not meet the requirements of circuits designed for the AD8051ARZ. A redesign and validation against both datasheets are required.
What are the typical bandwidth specifications for these amplifiers?
The AD8051ARZ offers a -3 dB bandwidth of approximately 110 MHz at a gain of +1 on a ±5 V supply. The AD8052LVISO8X provides a -3 dB bandwidth of approximately 80 MHz at a gain of +1 on a 5 V single supply. These values are typical and should be confirmed against the latest manufacturer datasheets for the specific grade and test conditions.
Which device is better suited for low-voltage portable applications?
The AD8052LVISO8X is better suited for low-voltage portable applications because it is specified for operation down to 2.7 V single supply and integrates two amplifiers, reducing board space. The AD8051ARZ is a single amplifier with a higher minimum supply voltage, making it less ideal for very low-voltage battery-powered designs.
Do both parts come in the same package type?
Yes, both the AD8051ARZ and AD8052LVISO8X are offered in an 8-lead SOIC package. However, the internal pin assignments differ due to the single versus dual amplifier configuration, so the packages are not functionally interchangeable despite sharing the same physical outline.