Part A
AD8676ARZ
Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 4850 PCS
- Package
- SOIC-8
- Series
- Linear - Amplifiers - Instrumentation, OP Amps, Buffer Amps
Replacement verdict
Compatible functional replacement candidate
The AD8675ARZ and AD8676ARZ are both precision operational amplifiers in the same SOIC-8 package with identical pinout, making them a viable functional replacement candidate. However, the AD8676ARZ offers a higher slew rate and wider gain-bandwidth product, so designers should validate dynamic performance requirements before substituting in bandwidth-sensitive or high-speed signal chains.
Package Type
High match
Pin Configuration
High match
Gain Bandwidth Product
Validation required
Slew Rate
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 | AD8675ARZ | AD8676ARZ | Why it matters |
|---|---|---|---|
| Number of Amplifiers | 1 | 2 | Single vs. dual channel configuration determines board layout and channel count per package. |
| Input Offset Voltage (max) | 75 µV | 75 µV | Low offset is critical for precision DC signal accuracy and error budget. |
| Input Voltage Noise Density | 2.8 nV/√Hz | 2.8 nV/√Hz | Low noise density affects resolution in low-level signal amplification. |
| Gain Bandwidth Product | 10 MHz | 10 MHz | GBW sets the achievable closed-loop bandwidth and dynamic response. |
| Slew Rate | 2.5 V/µs | 2.5 V/µs | Slew rate limits large-signal transient response and settling behavior. |
| Supply Voltage Range | ±5 V to ±15 V | ±5 V to ±15 V | Determines compatibility with the system power rails and headroom. |
| Supply Current per Amplifier (typ) | 2.5 mA | 2.5 mA | Quiescent current impacts power budget, especially in multi-channel designs. |
| Input Bias Current (typ) | 2 nA | 2 nA | Low bias current minimizes errors in high-impedance sensor interfaces. |
| Package | 8-Lead SOIC | 8-Lead SOIC | Package footprint and pinout affect drop-in compatibility on the PCB. |
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Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | AD8676ARZ | AD8675ARZ |
|---|---|---|
| Part Status | Active | Active |
| Amplifier Type | General Purpose | General Purpose |
| Number of Circuits | 2 | 1 |
| Output Type | Rail-to-Rail | Rail-to-Rail |
| Slew Rate | 2.5V/µs | 2.5V/µs |
| Gain Bandwidth Product | 10 MHz | 10 MHz |
| Current - Input Bias | 2 nA | 500 pA |
| Voltage - Input Offset | 12 µV | 10 µV |
| Supply Current | 2.7mA (x2 Channels) | 2.5mA |
| Current - Output / Channel | 20 mA | 35 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 are the primary differences between the AD8675ARZ and AD8676ARZ?
The AD8675ARZ is a single precision operational amplifier, while the AD8676ARZ is a dual precision operational amplifier. Both are offered in an 8-lead SOIC package (RZ suffix) and share similar precision, low-noise, and low-offset characteristics, but the AD8676ARZ integrates two amplifiers in the same package footprint.
Are the AD8675ARZ and AD8676ARZ pin-compatible in the SOIC package?
No. The AD8675ARZ (single) and AD8676ARZ (dual) use different pinouts in the 8-lead SOIC package. The single device uses the standard single op-amp pinout, while the dual device uses the standard dual op-amp pinout. They are not drop-in replacements for each other.
Do the AD8675ARZ and AD8676ARZ share the same supply voltage range?
Yes. Both devices operate from a dual supply of ±5 V to ±15 V (or a single supply of 10 V to 30 V), as specified in the Analog Devices datasheets for both parts.
How do the noise specifications of the AD8675ARZ and AD8676ARZ compare?
Both devices are specified with a low voltage noise density of approximately 2.8 nV/√Hz at 1 kHz, making them suitable for precision and low-noise signal conditioning applications. The dual AD8676ARZ provides two such amplifiers in one package.
Can the AD8676ARZ be used to replace two AD8675ARZ devices in a design?
Functionally, the AD8676ARZ provides two amplifiers with comparable precision specifications to the AD8675ARZ, so it can often replace two single devices. However, the PCB layout, pinout, and thermal considerations differ, so the design must be revalidated against the AD8676ARZ datasheet before substitution.
What are the input offset voltage characteristics of the AD8675ARZ and AD8676ARZ?
Both devices are precision op amps with low input offset voltage. The AD8675ARZ is specified with a maximum input offset voltage of 75 µV, and the AD8676ARZ is specified with a maximum input offset voltage of 75 µV per amplifier, per the respective Analog Devices datasheets.
Which applications are better suited to the AD8676ARZ versus the AD8675ARZ?
The AD8676ARZ is preferable when two matched precision amplifiers are needed in a compact footprint, such as in dual-channel signal chains or instrumentation front ends. The AD8675ARZ is preferable when only one amplifier channel is required, avoiding the cost and board space of an unused second channel.