Part A
AD8676BRZ
Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 1652 Stückzahl
- Package
- SOIC-8
- Series
- Linear-Verstärker.Instrumentation, OP-Verstärker, Pufferverstärker
Replacement verdict
Compatible functional replacement candidate
The AD8676BRZ and AD8672AR-REEL7 are both dual precision operational amplifiers from Analog Devices sharing the same SOIC-8 package and dual-channel topology, making them functionally interchangeable in many designs. However, the AD8676BRZ offers superior DC precision with lower offset voltage and lower voltage noise, while the AD8672AR-REEL7 provides higher output current drive and a wider supply range. Designers should validate supply voltage headroom, load driving requirements, and precision budget before substituting one for the other in a given application.
Package Type
High match
Channel Count
High match
Supply Voltage Range
Validation required
Input Offset Voltage
Validation required
Parts at a glance
Part B
AD8672AR-REEL7
Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 2165 Stückzahl
- Package
- SOIC-8
- Series
- Linear-Verstärker.Instrumentation, OP-Verstärker, Pufferverstärker
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 | AD8672AR-REEL7 | Why it matters |
|---|---|---|---|
| Number of Amplifiers | 2 | 2 | Both are dual op-amps, so channel count matches for drop-in substitution in dual-channel circuits. |
| Input Offset Voltage (max) | 50 µV | 125 µV | Lower offset improves DC precision; the AD8676 is tighter, which matters for high-accuracy signal chains. |
| Input Bias Current (typ) | 2 nA | 3 nA | Bias current affects error in high-impedance circuits; both are low, but the AD8676 is slightly better. |
| Gain Bandwidth Product | 10 MHz | 10 MHz | GBW determines achievable closed-loop bandwidth; identical values mean similar AC performance. |
| Voltage Noise Density (1 kHz) | 2.8 nV/√Hz | 2.8 nV/√Hz | Low noise density is critical for precision and audio applications; both parts are equally quiet. |
| Supply Voltage Range | ±5 V to ±15 V (10 V to 30 V) | ±5 V to ±15 V (10 V to 30 V) | Matching supply ranges allow the parts to operate in the same power rails without redesign. |
| Quiescent Current per Amplifier (typ) | 2.5 mA | 3.0 mA | Lower quiescent current reduces power consumption; the AD8676 is more efficient in battery-powered designs. |
| Slew Rate | 2.5 V/µs | 2.5 V/µs | Slew rate limits large-signal response; identical values indicate comparable transient behavior. |
| Operating Temperature Range | -40 °C to +125 °C | -40 °C to +85 °C | The AD8676 supports a wider temperature range, making it suitable for harsher environments. |
| Package | 8-Lead SOIC | 8-Lead SOIC | Identical package and pinout enable direct PCB footprint compatibility. |
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Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | AD8676BRZ | AD8672AR-REEL7 |
|---|---|---|
| Supplier | - | Analog Devices Inc.,Rochester Electronics, LLC |
| Part Status | Active | Obsolete |
| Amplifier Type | General Purpose | General Purpose |
| Number of Circuits | 2 | 2 |
| 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 (x2 Channels) |
| 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 AD8672AR-REEL7?
The AD8676BRZ is a dual, precision, low-noise operational amplifier with rail-to-rail output, specified for ±5 V to ±15 V supplies, offered in an 8-lead SOIC package with a B-grade (improved) grade. The AD8672AR-REEL7 is a dual, precision, low-noise op amp also with rail-to-rail output, supplied in an 8-lead SOIC and shipped in 7-inch tape-and-reel packaging, with an A-grade specification. Both share the same dual op amp topology and SOIC-8 footprint, but differ in grade, packaging format, and specified performance limits.
Are the AD8676BRZ and AD8672AR-REEL7 pin-compatible?
Yes. Both devices are dual operational amplifiers in an 8-lead SOIC package with the same standard pinout (1: OUT A, 2: -IN A, 3: +IN A, 4: V-, 5: +IN B, 6: -IN B, 7: OUT B, 8: V+). This allows them to share the same PCB land pattern, though electrical specifications must still be validated for the target design.
How do the noise specifications of the AD8676BRZ and AD8672AR-REEL7 compare?
Both the AD8676 and AD8672 are low-noise precision amplifiers. The AD8676 is specified with a voltage noise density of approximately 2.8 nV/√Hz at 1 kHz, while the AD8672 is specified at approximately 2.8 nV/√Hz at 1 kHz as well. Designers should consult the respective manufacturer datasheets for the exact tested conditions and grade-specific limits before finalizing a selection.
What supply voltage ranges do these two amplifiers support?
Both the AD8676BRZ and AD8672AR-REEL7 operate from dual supplies of ±5 V to ±15 V (or equivalent single-supply ranges of 10 V to 30 V), consistent with the AD8676 and AD8672 datasheet specifications. The specified input common-mode and output swing performance should be verified against the datasheet for the chosen supply.
What does the "BRZ" suffix on AD8676BRZ indicate compared to the "AR-REEL7" suffix on AD8672AR-REEL7?
The "B" in AD8676BRZ denotes a higher-performance grade with tighter specified limits, "R" indicates the SOIC package, and "Z" indicates RoHS-compliant lead finish. For the AD8672AR-REEL7, "A" denotes the standard grade, "R" indicates the SOIC package, and "REEL7" indicates 7-inch tape-and-reel packaging for automated assembly. Grade and packaging differences should be considered when comparing the two parts.
Can the AD8672AR-REEL7 be used as a drop-in replacement for the AD8676BRZ?
Because both are dual op amps in the same 8-lead SOIC package with the same pinout, a physical drop-in is possible. However, the AD8676BRZ is a B-grade device with tighter specified limits than the A-grade AD8672AR-REEL7, so the replacement is only acceptable after confirming that the AD8672's grade-specific specifications meet the design's accuracy, noise, and offset requirements.
What are the typical applications for these precision dual op amps?
Both the AD8676 and AD8672 families are suited to precision signal conditioning, including instrumentation amplifiers, active filters, sensor interfaces, and data acquisition front ends, due to their low noise, low offset, and rail-to-rail output. Final application suitability should be validated against the manufacturer datasheet for the specific grade and supply conditions.