Part A
AD8676BRMZ
Công ty Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 1660 PCS
- Package
- MSOP-8
- Series
- Linear - Amplifiers - Instrumentation, OP Amps, Buffer Amps
Replacement verdict
Compatible functional replacement candidate
The AD8675ARMZ and AD8676BRMZ are both precision, low-noise, rail-to-rail output operational amplifiers from Analog Devices in the same 8-lead MSOP package, sharing identical pinout and functionally equivalent core specifications. The AD8676BRMZ offers a higher guaranteed voltage-noise density specification and a tighter offset-voltage grade, making it a viable functional substitute for the AD8675ARMZ in most precision signal-conditioning applications, provided the tighter noise and offset grades are acceptable or beneficial to the design.
Package and Pinout
High match
Amplifier Topology
High match
Supply Voltage Range
High match
Noise and Offset Grade
Validation required
Parts at a glance
Part B
AD8675ARMZ
Công ty Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 5504 PCS
- Package
- MSOP-8
- Series
- Linear - Amplifiers - Instrumentation, OP Amps, Buffer Amps
Key differences
Rows are prioritized by design impact. Highlighted values require attention during substitution.
Key electrical and mechanical differences between the two devices
| Parameter | AD8675ARMZ | AD8676BRMZ | Why it matters |
|---|---|---|---|
| Number of Amplifiers | 1 | 2 | Determines how many independent op-amp channels are available in a single package, directly affecting circuit density and channel count. |
| Input Offset Voltage (Max) | 75 µV | 50 µV | Lower offset voltage improves DC precision and reduces output error in high-gain or precision signal chains. |
| Input Voltage Noise Density (1 kHz) | 2.8 nV/√Hz | 2.8 nV/√Hz | Low voltage noise is critical for amplifying small signals without degrading signal-to-noise ratio. |
| Gain Bandwidth Product | 10 MHz | 10 MHz | Sets the achievable closed-loop bandwidth and slew performance for the amplifier in a given configuration. |
| Supply Voltage Range | ±5 V to ±15 V (10 V to 30 V) | ±5 V to ±15 V (10 V to 30 V) | Defines the operating supply window and compatibility with system power rails. |
| Supply Current per Amplifier (Typ) | 2.5 mA | 2.5 mA | Affects total power consumption and thermal budget, especially in multi-channel or battery-powered designs. |
| Input Bias Current (Typ) | 2 nA | 2 nA | Low bias current minimizes errors in high-impedance sensor and feedback networks. |
| Package | 8-Lead MSOP | 8-Lead MSOP | Package footprint and pinout determine board layout compatibility and drop-in substitutability. |
| Operating Temperature Range | -40 °C to +125 °C | -40 °C to +125 °C | Ensures reliable operation across industrial and extended temperature environments. |
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Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | AD8676BRMZ | AD8675ARMZ |
|---|---|---|
| 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 | 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 are the key differences between the AD8675ARMZ and AD8676BRMZ?
The AD8675ARMZ is a single precision operational amplifier in an 8-lead MSOP package, while the AD8676BRMZ is a dual precision operational amplifier in an 8-lead MSOP package. The AD8676BRMZ provides two amplifiers per package, whereas the AD8675ARMZ provides one. Both share similar precision op-amp characteristics, but the channel count and corresponding pinout differ.
Are the AD8675ARMZ and AD8676BRMZ pin-compatible?
No. The AD8675ARMZ is a single-channel device and the AD8676BRMZ is a dual-channel device, so their pin functions differ despite both using an 8-lead MSOP package. The AD8676BRMZ uses pins for two independent amplifier channels, while the AD8675ARMZ uses the package for a single amplifier with different pin assignments. They should not be treated as drop-in replacements.
What is the supply voltage range for the AD8675ARMZ and AD8676BRMZ?
Both the AD8675ARMZ and AD8676BRMZ are specified for operation from ±5 V to ±15 V dual supplies (or 10 V to 30 V single supply), consistent with the AD8675/AD8676 datasheet specifications. Designers should verify the exact supply range against the current Analog Devices datasheet for the specific grade before finalizing a design.
How do the offset voltage specifications compare between the AD8675ARMZ and AD8676BRMZ?
Both devices are precision op amps with low offset voltage, and the AD8676BRMZ is offered in a B-grade with tighter offset voltage grading than the AD8675ARMZ A-grade. The exact maximum offset voltage values should be confirmed from the respective Analog Devices datasheet tables, as grades and test conditions affect the specified limits.
Can the AD8676BRMZ replace the AD8675ARMZ in an existing single-amplifier design?
Not directly. The AD8676BRMZ is a dual amplifier with a different pinout, so substituting it for a single AD8675ARMZ requires PCB layout changes and unused-channel handling. A direct replacement is not possible without verifying pin functions, supply connections, and layout against the datasheets.
What are the typical applications for the AD8675ARMZ and AD8676BRMZ?
Both are precision op amps suited to applications requiring low noise and low offset, such as instrumentation, precision signal conditioning, and sensor interfaces. The AD8675ARMZ single-channel version suits compact single-amplifier circuits, while the AD8676BRMZ dual-channel version suits designs needing two matched amplifiers in one package. Application suitability should be confirmed against the datasheet specifications.
Do the AD8675ARMZ and AD8676BRMZ share the same package type?
Yes, both are offered in an 8-lead MSOP package (RMZ suffix). However, identical package type does not imply identical pinout or interchangeability, because the AD8675ARMZ is single-channel and the AD8676BRMZ is dual-channel.
What should be verified before selecting between the AD8675ARMZ and AD8676BRMZ?
Verify channel count, pinout, offset voltage grade, supply range, noise specifications, and package land pattern against the official Analog Devices datasheets. Confirm that the selected grade meets the required offset and drift limits, and ensure the PCB layout matches the chosen device's pin functions.