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 AD8651AR and AD8652ARZ are functionally compatible single/dual operational amplifiers from the same AD865x family, sharing identical supply voltage range, bandwidth, and process technology. The AD8652ARZ integrates two channels in a single SOIC-8 package, making it a viable replacement candidate where board space permits and dual-channel capability is acceptable, though the channel count and package footprint differ from the single-channel AD8651AR.
Amplifier Type
High match
Supply Voltage Range
High match
Channel Count
Validation required
Package Type
Validation required
Key differences
Rows are prioritized by design impact. Highlighted values require attention during substitution.
Key electrical and mechanical differences between the two devices
| Parameter | AD8652ARZ | AD8651AR | Why it matters |
|---|---|---|---|
| Number of Amplifiers | 2 (Dual) | 1 (Single) | Determines how many independent op-amp channels are available in one package; a dual cannot directly replace a single in a single-channel circuit without layout changes. |
| Gain Bandwidth Product | 50 MHz | 50 MHz | Sets the maximum frequency at which the amplifier can provide useful closed-loop gain; matching GBW supports similar AC performance. |
| Input Offset Voltage (Max) | 250 µV | 250 µV | Low offset voltage is critical for precision DC signal conditioning; identical offset specs mean comparable accuracy. |
| Input Voltage Noise Density | 4.5 nV/√Hz | 4.5 nV/√Hz | Low noise density affects the SNR of low-level signal amplification; matching values preserve noise performance. |
| Supply Voltage Range | 2.7 V to 5.5 V | 2.7 V to 5.5 V | Defines the operating supply window; identical ranges allow the same power rail design. |
| Quiescent Current per Amplifier | 2.3 mA | 2.3 mA | Affects total power consumption; matching per-amplifier current keeps power budgets consistent. |
| Slew Rate | 41 V/µs | 41 V/µs | Determines large-signal transient response and full-power bandwidth; identical slew rate supports similar dynamic behavior. |
| Package Type | 8-Lead SOIC | 8-Lead SOIC | Package footprint and pinout must match for board-level interchangeability; both use SOIC but pin functions differ due to channel count. |
| Operating Temperature Range | -40 °C to +125 °C | -40 °C to +125 °C | Ensures reliable operation across environmental conditions; identical ranges suit the same application environments. |
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Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | AD8652ARZ | AD8651AR |
|---|---|---|
| Supplier | - | Rochester Electronics, LLC |
| Series | DigiTrim® | DigiTrim® |
| Part Status | Active | Obsolete |
| 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 are the primary differences between the AD8652ARZ and the AD8651AR?
The AD8652ARZ is a dual-channel operational amplifier, while the AD8651AR is a single-channel operational amplifier. Both are members of the Analog Devices AD865x family and share the same core 50 MHz CMOS amplifier design, but they differ in channel count and package. The AD8652ARZ is supplied in an 8-lead SOIC package, and the AD8651AR is supplied in an 8-lead SOIC package as well, with the single-channel device using fewer of the available pins.
Are the AD8652ARZ and AD8651AR electrically identical on a per-channel basis?
Yes. Both devices are based on the same 50 MHz CMOS amplifier core and share the same key AC and DC specifications, including a 50 MHz gain-bandwidth product, 27 V/µs slew rate, and low input voltage noise of approximately 5 nV/√Hz. The primary electrical difference is the number of amplifiers integrated in the package, not the per-channel performance.
Can the AD8651AR be used as a drop-in replacement for one channel of the AD8652ARZ?
Not as a direct drop-in replacement. Although the per-channel performance is equivalent, the AD8652ARZ is a dual op amp in an 8-lead SOIC package, while the AD8651AR is a single op amp in an 8-lead SOIC package. The pinouts differ, so the PCB layout and pin assignments must be verified against the respective datasheets before substitution.
What is the supply voltage range for the AD8652ARZ and AD8651AR?
Both devices operate from a single supply voltage range of 2.7 V to 5.5 V, making them suitable for low-voltage, single-supply applications such as portable instrumentation and battery-powered systems.
Do the AD8652ARZ and AD8651AR support rail-to-rail input and output operation?
Yes. Both the AD8652ARZ and AD8651AR feature rail-to-rail input and output (RRIO) capability, allowing signal swing close to both supply rails, which is beneficial in low-voltage single-supply designs.
What are the package and pin count differences between the AD8652ARZ and AD8651AR?
Both parts are offered in 8-lead SOIC packages. The AD8652ARZ uses all eight pins for a dual amplifier configuration (two inputs, two outputs, and supply pins), while the AD8651AR uses the same 8-lead SOIC footprint for a single amplifier, with several pins unconnected or assigned differently. Designers must consult the respective datasheet pin configurations before layout.
Which applications are better suited to the AD8652ARZ versus the AD8651AR?
The AD8652ARZ is preferable when two matched amplifier channels are needed in a compact footprint, such as in differential signal chains, dual active filters, or multi-channel sensor conditioning. The AD8651AR is preferable when only one amplifier channel is required, reducing board space and cost in single-channel signal paths.