Part A
AD8671ARZ
아날로그 디바이스(주)
- Lifecycle
- Active
- Stock
- 7405 PCS
- Package
- SOIC-8
- Series
- 선형 증폭기 - 계측기, 연산 증폭기, 완충 증폭기
Replacement verdict
Compatible functional replacement candidate
The AD8671ARZ and AD8671AR-REEL are functionally identical operational amplifiers from the same manufacturer, differing only in packaging format. Both share the same die, electrical specifications, and SOIC-8 footprint, making them interchangeable in circuit design. The sole distinction is the delivery form: the ARZ is supplied in tube packaging, while the AR-REEL is supplied on tape and reel for automated assembly. Designers can treat these as equivalent for functional substitution, with the choice driven purely by production handling requirements.
Amplifier Specifications
High match
Package Type
High match
Pin Configuration
High match
Operating Temperature Range
High match
Parts at a glance
Part B
AD8671AR-REEL
아날로그 디바이스(주)
- Lifecycle
- Active
- Stock
- 9392 PCS
- Package
- SOIC-8
- Series
- 선형 증폭기 - 계측기, 연산 증폭기, 완충 증폭기
Key differences
Rows are prioritized by design impact. Highlighted values require attention during substitution.
Key electrical and mechanical differences between the two devices
| Parameter | AD8671ARZ | AD8671AR-REEL | Why it matters |
|---|---|---|---|
| Amplifier Type | General Purpose | General Purpose | Confirms both parts are the same amplifier core, so functional behavior is identical. |
| Number of Circuits | 1 | 1 | Both are single-channel op-amps, ensuring pin and channel count compatibility. |
| Gain Bandwidth Product | 10 MHz | 10 MHz | Determines the frequency range over which the amplifier provides useful gain; identical values mean equivalent AC performance. |
| Slew Rate | 4 V/µs | 4 V/µs | Affects large-signal transient response; matching slew rates ensure the same dynamic behavior. |
| Input Offset Voltage | 75 µV (max) | 75 µV (max) | Low offset voltage is critical for precision DC applications; identical limits mean equivalent accuracy. |
| Input Bias Current | 10 nA (max) | 10 nA (max) | Low bias current minimizes errors in high-impedance circuits; matching values ensure the same input loading. |
| Supply Voltage Range | ±5 V to ±15 V | ±5 V to ±15 V | Defines the operating supply window; identical ranges allow drop-in replacement in the same power rails. |
| Package / Mounting Type | 8-SOIC (Surface Mount) | 8-SOIC (Surface Mount) | Same package and mounting ensure physical and PCB footprint compatibility. |
| Packaging / Delivery Form | Tube | Tape & Reel | The only functional difference is the shipping form; tape and reel suits automated assembly, while tubes suit manual or low-volume handling. |
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Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | AD8671ARZ | AD8671AR-REEL |
|---|---|---|
| Supplier | - | Analog Devices Inc. |
| Part Status | Active | Obsolete |
| Amplifier Type | General Purpose | General Purpose |
| Number of Circuits | 1 | 1 |
| Slew Rate | 4V/µs | 4V/µs |
| Gain Bandwidth Product | 10 MHz | 10 MHz |
| Current - Input Bias | 3 nA | 3 nA |
| Voltage - Input Offset | 20 µV | 20 µV |
| Supply Current | 3mA | 3mA |
| Current - Output / Channel | 20 mA | 20 mA |
| Voltage - Supply Span(Min) | 10 V | 10 V |
| Voltage - Supply Span(Max) | 36 V | 36 V |
| Operating Temperature | -40°C ~ 125°C | -40°C ~ 125°C |
| Mounting Type | Surface Mount | Surface Mount |
Frequently asked questions
What is the difference between AD8671ARZ and AD8671AR-REEL?
Both are the same AD8671 precision operational amplifier die in an 8-lead SOIC package. The AD8671ARZ is the standard tube/rail packaging orderable part number, while AD8671AR-REEL is the tape-and-reel packaging variant intended for automated pick-and-place assembly. The electrical specifications are identical; only the packaging format and orderable part number differ.
Are AD8671ARZ and AD8671AR-REEL electrically and functionally interchangeable?
Yes. Both part numbers refer to the same AD8671 amplifier in the same 8-lead SOIC (R-8) package with identical pinout and specified performance. They can be used interchangeably in the same PCB footprint; the choice depends on the assembly method (manual/tube vs. automated reel feed).
What are the key specifications of the AD8671?
The AD8671 is a single, precision, low-noise operational amplifier. Verified datasheet parameters include low voltage noise of approximately 2.8 nV/√Hz at 1 kHz, low input bias current (typically a few nA), low offset voltage (tens of µV typical), high open-loop gain, and a unity-gain bandwidth of about 10 MHz. It operates from a dual supply of ±5 V to ±15 V (or equivalent single supply) and is specified over the extended industrial temperature range.
What package does the AD8671ARZ use and is it RoHS compliant?
The AD8671ARZ is supplied in an 8-lead SOIC package (R-8 suffix). The "Z" suffix in the part number denotes RoHS-compliant, lead-free construction per Analog Devices' ordering nomenclature. Designers should confirm the current RoHS status on the manufacturer datasheet or distributor page for the specific lot.
Why would a designer choose the AD8671AR-REEL over the AD8671ARZ?
The AD8671AR-REEL is supplied on tape and reel, which is required for high-volume automated surface-mount assembly lines. The AD8671ARZ in tube/rail format is typically used for prototyping, low-volume runs, or manual assembly. The electrical performance is the same, so the selection is driven by manufacturing and inventory handling requirements.
Can AD8671ARZ and AD8671AR-REEL be mixed on the same production line?
Yes, because they are the same device in the same package. However, mixing packaging formats on an automated line requires that the feeder be set up for the specific format (tube vs. tape-and-reel). For traceability and inventory control, it is generally preferable to use one orderable part number per assembly run.
What are the typical applications for the AD8671?
The AD8671 is commonly used in precision instrumentation, sensor signal conditioning, active filters, audio and medical instrumentation, and other low-noise, high-precision analog signal-chain designs. Its low noise and low offset make it suitable for front-end amplification where signal integrity is critical.