Part A
AD8676ARZ
テキサス・インスツルメンツ
- Lifecycle
- Active
- Stock
- 4850 個数
- Package
- SOIC-8
- Series
- リニアアンプ - 計装用、オペアンプ、バッファアンプ
Replacement verdict
Compatible functional replacement candidate
The AD8676ARZ and AD8671AR-REEL are both dual-precision operational amplifiers from Analog Devices sharing the same SOIC-8 package and dual-channel topology, making the AD8676ARZ a viable functional replacement candidate for the AD8671AR-REEL in most designs. However, the AD8676ARZ offers lower voltage noise and lower input bias current, while the AD8671AR-REEL provides higher slew rate and wider gain bandwidth, so the substitution should be validated against the specific noise, bandwidth, and dynamic requirements of the target application.
Channel Count
High match
Package Type
High match
Gain Bandwidth Product
Validation required
Input Voltage Noise
Validation required
Parts at a glance
Part B
AD8671AR-REEL
テキサス・インスツルメンツ
- Lifecycle
- Active
- Stock
- 9392 個数
- Package
- SOIC-8
- Series
- リニアアンプ - 計装用、オペアンプ、バッファアンプ
Key differences
Rows are prioritized by design impact. Highlighted values require attention during substitution.
Key electrical and mechanical differences between the two devices
| Parameter | AD8676ARZ | 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 in a one-channel layout without layout changes. |
| Package / Mounting | 8-Lead SOIC (surface mount) | 8-Lead SOIC (surface mount) | Both are 8-lead SOIC, but pinouts differ between single and dual op-amps, so board footprint compatibility must be verified. |
| Input Offset Voltage (max) | 50 µV | 75 µV | Lower offset voltage improves DC accuracy in precision signal conditioning; the dual part offers tighter offset. |
| Input Voltage Noise Density | 2.8 nV/√Hz | 2.8 nV/√Hz | Low voltage noise is critical for low-level sensor and audio signal amplification; both parts share the same excellent noise performance. |
| Gain Bandwidth Product | 10 MHz | 10 MHz | GBW sets the achievable closed-loop bandwidth; identical values mean similar AC response for equivalent gain configurations. |
| Supply Voltage Range | ±5 V to ±15 V (dual supply) | ±5 V to ±15 V (dual supply) | Matching supply ranges allow both parts to operate in the same power rails, supporting substitutability in existing designs. |
| Quiescent Current per Amplifier | 2.5 mA (typ) | 3.0 mA (typ) | Lower quiescent current reduces power dissipation; the dual part is slightly more efficient per channel. |
| Slew Rate | 2.5 V/µs | 2.5 V/µs | Slew rate limits large-signal bandwidth and transient response; identical values indicate comparable dynamic behavior. |
| Operating Temperature Range | -40 °C to +125 °C | -40 °C to +125 °C | Identical industrial temperature ratings ensure both parts meet the same environmental requirements. |
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 | AD8676ARZ | 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 primary differences between the AD8676ARZ and AD8671AR-REEL?
The AD8676ARZ is a dual, precision, low-noise operational amplifier in an 8-lead SOIC package, while the AD8671AR-REEL is a single, precision, low-noise operational amplifier supplied in tape-and-reel packaging. The AD8676 offers two amplifiers per package, whereas the AD8671 provides one amplifier per package.
Are the AD8676ARZ and AD8671AR-REEL pin-compatible?
No. The AD8676ARZ is a dual op-amp in an 8-lead SOIC package with a standard dual pinout, while the AD8671AR-REEL is a single op-amp in an 8-lead SOIC package with a single-amplifier pinout. The pin functions differ, so they are not drop-in replacements for each other.
Do both devices share the same input voltage noise specification?
Yes. 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 precision low-noise signal conditioning applications.
What is the specified supply voltage range for these amplifiers?
Both the AD8676ARZ and AD8671AR-REEL are specified for operation from ±5 V to ±15 V dual supplies (or 10 V to 30 V single supply), consistent with the AD8671/AD8672/AD8674 family datasheet.
How do the input offset voltage specifications compare?
Both devices are specified with a maximum input offset voltage of 75 µV, reflecting their precision-grade performance. This low offset makes both parts suitable for high-accuracy DC signal paths.
What bandwidth do the AD8676ARZ and AD8671AR-REEL provide?
Both amplifiers are specified with a unity-gain bandwidth of 10 MHz, allowing them to support wideband precision signal processing up to that frequency range.
Can the AD8671AR-REEL be used where a dual amplifier like the AD8676ARZ is required?
No, not directly. The AD8671AR-REEL contains a single amplifier, so a design requiring two independent amplifiers would need two AD8671 devices or a dual device such as the AD8676ARZ. Circuit topology and PCB layout must be revalidated accordingly.
What packaging options distinguish these two orderable part numbers?
The AD8676ARZ is supplied in an 8-lead SOIC tube/standard packaging format, while the AD8671AR-REEL is supplied in tape-and-reel format intended for automated assembly. Both use the 8-lead SOIC body, but the reel suffix indicates the delivery format for the single-channel AD8671.