Part A
AD8676BRZ
ADI公司
- Lifecycle
- Active
- Stock
- 1652 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 AD8676BRZ and AD8671AR-REEL are both dual-precision operational amplifiers from Analog Devices sharing the same SOIC-8 package and dual-channel topology, making the AD8676BRZ a viable functional replacement candidate for the AD8671AR-REEL in most precision signal-conditioning applications. Designers should validate supply voltage headroom, input bias current behavior, and thermal drift against the target circuit before final qualification.
Amplifier Type
High match
Channel Count
High match
Supply Voltage Range
Validation required
Input Bias Current
Validation required
Parts at a glance
Part B
AD8671AR-REEL
ADI公司
- Lifecycle
- Active
- Stock
- 9392 件
- Package
- SOIC-8
- Series
- 線性放大器-儀器、運算放大器、緩衝放大器
Key differences
Rows are prioritized by design impact. Highlighted values require attention during substitution.
Key electrical and mechanical differences between the two devices
| Parameter | AD8676BRZ | AD8671AR-REEL | Why it matters |
|---|---|---|---|
| Number of Amplifiers | 2 (Dual) | 1 (Single) | Channel count determines whether the part can serve multi-channel signal chains; a dual cannot directly replace a single without layout changes. |
| Input Offset Voltage (Max) | 12 µV | 75 µV | Lower offset improves DC precision; the dual part offers tighter offset, which matters for high-accuracy instrumentation front ends. |
| Input Voltage Noise Density | 2.8 nV/√Hz | 2.8 nV/√Hz | Noise density sets the achievable SNR in low-level signal amplification; both are low-noise, so noise performance is comparable. |
| Gain Bandwidth Product | 10 MHz | 10 MHz | GBW determines closed-loop bandwidth and settling; matching values means similar dynamic response in the same circuit. |
| Supply Voltage Range | ±5 V to ±15 V (10 V to 30 V) | ±5 V to ±15 V (10 V to 30 V) | Compatible supply ranges allow the parts to operate in the same power rails without redesign of the supply section. |
| Input Bias Current (Typ) | 2 nA | 2 nA | Low bias current minimizes errors in high-impedance sources; equivalent values support similar sensor interfacing. |
| Operating Temperature Range | -40 °C to +125 °C | -40 °C to +125 °C | Industrial temperature range ensures reliable operation in harsh environments; identical ranges ease qualification. |
| Package / Mounting | 8-Lead SOIC (Surface Mount) | 8-Lead SOIC (Surface Mount) | Same package footprint allows drop-in board placement, though pinout differs between single and dual devices. |
| Slew Rate | 2.5 V/µs | 2.5 V/µs | Slew rate limits large-signal bandwidth; matching values indicate comparable transient performance. |
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 | AD8676BRZ | AD8671AR-REEL |
|---|---|---|
| Supplier | - | Analog Devices Inc. |
| Part Status | Active | Obsolete |
| Amplifier Type | General Purpose | General Purpose |
| Number of Circuits | 2 | 1 |
| Slew Rate | 2.5V/µs | 4V/µs |
| Gain Bandwidth Product | 10 MHz | 10 MHz |
| Current - Input Bias | 2 nA | 3 nA |
| Voltage - Input Offset | 12 µV | 20 µV |
| Supply Current | 2.7mA (x2 Channels) | 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 |
| Output Type | Rail-to-Rail | - |
Frequently asked questions
What are the key differences between the AD8676BRZ and AD8671AR-REEL?
The AD8676BRZ is a dual, precision, low-noise operational amplifier in an 8-lead SOIC package, while the AD8671AR-REEL is a single, precision, low-noise op amp supplied in tape-and-reel packaging. The AD8676 offers two amplifiers per package with rail-to-rail output, whereas the AD8671 provides one amplifier per package. Both share the Analog Devices precision op amp family characteristics, but channel count and packaging differ.
Are the AD8676BRZ and AD8671AR-REEL pin-compatible?
No. The AD8676BRZ is a dual op amp in an 8-lead SOIC package, while the AD8671AR-REEL is a single op amp in an 8-lead SOIC package. Although both use an 8-lead SOIC footprint, the pin functions differ because one device contains two amplifiers and the other contains one. They are not direct drop-in replacements for each other.
What is the input voltage noise density of these amplifiers?
Both the AD8676 and AD8671 are specified with a typical input voltage noise density of 2.8 nV/√Hz at 1 kHz, making them suitable for low-noise precision signal conditioning applications. Designers should confirm the exact test conditions in the respective Analog Devices datasheets.
What supply voltage range do the AD8676BRZ and AD8671AR-REEL support?
Both devices operate from dual supplies of ±5 V to ±15 V (or equivalently single supplies of 10 V to 30 V), consistent with the Analog Devices AD8671/AD8672/AD8674 precision op amp family specifications. Always verify the operating range against the specific datasheet revision for the exact grade ordered.
Which part should be selected for a dual-channel low-noise design?
The AD8676BRZ should be selected when two precision low-noise amplifiers are required in a single 8-lead SOIC package, reducing board space and component count. The AD8671AR-REEL is a single-channel device and would require two packages for a dual-channel function.
What does the REEL suffix on the AD8671AR-REEL indicate?
The REEL suffix indicates that the AD8671AR is supplied in tape-and-reel packaging, which is intended for automated pick-and-place assembly lines. The AD8676BRZ is typically supplied in tube or tray packaging; buyers should confirm the exact packaging option with the distributor when ordering.
Do both parts offer rail-to-rail output swing?
Yes. Both the AD8676 and AD8671 are specified with rail-to-rail output swing, allowing output signals to approach the supply rails, which is beneficial in low-voltage precision applications. Confirm the exact output swing limits versus load in the manufacturer datasheet.
What are typical applications for these precision op amps?
Both devices are suited to precision instrumentation, medical instrumentation, sensor signal conditioning, and low-noise filter and amplifier circuits where low offset voltage and low input noise are critical. The dual AD8676BRZ fits multi-channel signal chains, while the single AD8671AR-REEL fits space-constrained single-channel designs.