Part A
AD8652ARZ
ADI公司
- Lifecycle
- Active
- Stock
- 2789 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 AD8651ARZ and AD8652ARZ share the same core precision CMOS op-amp architecture, supply range, and SOIC-8 package, making them strong functional candidates for substitution. The primary distinction is channel count: the AD8651ARZ is a single-channel device while the AD8652ARZ is a dual-channel device, so board-level pinout and channel utilization must be validated before direct replacement.
Channel Count
Not compatible
Package Type
High match
Supply Voltage Range
High match
Gain Bandwidth Product
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 | AD8651ARZ | AD8652ARZ | Why it matters |
|---|---|---|---|
| Number of Amplifiers | 1 | 2 | Determines how many independent signal channels can be processed in one package; a dual device can replace two singles, affecting board layout and channel count. |
| Supply Voltage Range | 2.7 V to 5.5 V | 2.7 V to 5.5 V | Defines the compatible power rails; matching ranges allow the parts to operate in the same system supply without redesign. |
| Gain Bandwidth Product | 50 MHz | 50 MHz | Sets the achievable closed-loop bandwidth; identical GBW means similar AC performance and signal fidelity in the application. |
| Input Offset Voltage (Max) | 250 µV | 250 µV | Low offset improves DC accuracy; matching values ensure comparable precision in sensor and instrumentation circuits. |
| Input Bias Current | 1 pA (typ) | 1 pA (typ) | Very low bias current suits high-impedance sources; identical values preserve input loading behavior when substituting parts. |
| Input Voltage Noise Density | 4.5 nV/√Hz | 4.5 nV/√Hz | Determines noise floor in low-level signal chains; equal noise density ensures comparable SNR performance. |
| Slew Rate | 41 V/µs | 41 V/µs | Affects large-signal transient response; matching slew rate keeps dynamic behavior consistent between the two parts. |
| Quiescent Current per Amplifier | 2.3 mA (typ) | 2.3 mA (typ) | Impacts power budget; equal per-amplifier current means total consumption scales only with channel count. |
| Package | 8-Lead SOIC | 8-Lead SOIC | Package footprint and pinout affect PCB layout; both share the same SOIC outline but pin assignments differ between single and dual configurations. |
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Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | AD8652ARZ | AD8651ARZ |
|---|---|---|
| Series | DigiTrim® | DigiTrim® |
| Part Status | Active | Active |
| Amplifier Type | CMOS | Voltage Feedback |
| Number of Circuits | 2 | 1 |
| Output Type | Rail-to-Rail | Rail-to-Rail |
| Slew Rate | 41V/µs | 41V/µs |
| Gain Bandwidth Product | 50 MHz | 50 MHz |
| Current - Input Bias | 1 pA | 1 pA |
| Voltage - Input Offset | 90 µV | 100 µV |
| Supply Current | 17.5mA | 9.5mA |
| Current - Output / Channel | 40 mA | 40 mA |
| Voltage - Supply Span(Min) | 2.7 V | 2.7 V |
| Voltage - Supply Span(Max) | 5.5 V | 5.5 V |
| Operating Temperature | -40°C ~ 125°C | -40°C ~ 125°C |
| Mounting Type | Surface Mount | Surface Mount |
Frequently asked questions
What is the primary difference between the AD8651ARZ and AD8652ARZ?
The AD8651ARZ is a single-channel operational amplifier, while the AD8652ARZ is a dual-channel operational amplifier. Both are members of the same precision CMOS op-amp family and share the same core electrical characteristics, but they differ in channel count and package pinout.
Are the AD8651ARZ and AD8652ARZ pin-compatible?
No. The AD8651ARZ is a single op-amp in an 8-lead SOIC package, and the AD8652ARZ is a dual op-amp in an 8-lead SOIC package. Although both use the same package footprint, the pin functions differ because the dual device uses pins for a second amplifier channel, so they are not directly interchangeable without circuit redesign.
Do the AD8651ARZ and AD8652ARZ share the same supply voltage range?
Yes. Both devices are specified for operation from a single supply of 2.7 V to 5.5 V, and both support dual-supply operation within the corresponding total supply range, per the Analog Devices datasheet.
What is the gain bandwidth product of the AD8651ARZ and AD8652ARZ?
Both the AD8651ARZ and AD8652ARZ have a gain bandwidth product of 50 MHz, as specified in the Analog Devices datasheet for the AD8651/AD8652 family.
How do the input offset voltage specifications compare between the AD8651ARZ and AD8652ARZ?
Both devices are specified with a maximum input offset voltage of 250 µV over the operating temperature range, according to the Analog Devices datasheet. The single and dual versions share the same offset voltage specification.
What is the quiescent current of the AD8651ARZ versus the AD8652ARZ?
The AD8651ARZ (single) typically draws 4.5 mA of quiescent current, while the AD8652ARZ (dual) typically draws 9 mA, as stated in the Analog Devices datasheet. The dual device consumes approximately twice the quiescent current because it contains two amplifier channels.
Are the AD8651ARZ and AD8652ARZ specified for the same operating temperature range?
Yes. Both the AD8651ARZ and AD8652ARZ are specified over the industrial temperature range of −40°C to +125°C, per the Analog Devices datasheet.
Can the AD8652ARZ be used as a drop-in replacement for two AD8651ARZ devices?
Functionally, the AD8652ARZ provides two amplifier channels with the same core specifications as the AD8651ARZ, but it is not a drop-in replacement. The PCB layout, pinout, and package footprint differ, so a board redesign is required to substitute two single devices with one dual device.