Part A
AD8676ARMZ
아날로그 디바이스(주)
- Lifecycle
- Active
- Stock
- 6420 PCS
- Package
- MSOP-8
- Series
- 선형 증폭기 - 계측기, 연산 증폭기, 완충 증폭기
Replacement verdict
Compatible functional replacement candidate
The AD8676ARMZ and AD8676BRMZ are functionally interchangeable dual operational amplifiers sharing identical pinout, package, supply range, and electrical specifications; the BRMZ grade offers tighter guaranteed offset voltage and drift tolerances, making it a valid drop-in candidate where enhanced DC precision is required, while the ARMZ grade remains suitable for applications with relaxed offset requirements.
Package and Pinout
High match
Supply Voltage Range
High match
Input Offset Voltage Grade
Validation required
Gain Bandwidth Product
High match
Parts at a glance
Part B
AD8676BRMZ
아날로그 디바이스(주)
- Lifecycle
- Active
- Stock
- 1660 PCS
- Package
- MSOP-8
- Series
- 선형 증폭기 - 계측기, 연산 증폭기, 완충 증폭기
Key differences
Rows are prioritized by design impact. Highlighted values require attention during substitution.
Key electrical and mechanical differences between the two devices
| Parameter | AD8676ARMZ | AD8676BRMZ | Why it matters |
|---|---|---|---|
| Number of Amplifiers | 2 | 2 | Both are dual op-amps, so channel count matches for direct circuit substitution. |
| Supply Voltage Range | ±5 V to ±18 V (dual supply) | ±5 V to ±18 V (dual supply) | Identical supply range ensures the part can drop into the same power rails without redesign. |
| Input Offset Voltage (max) | 50 µV | 50 µV | Matching offset voltage means DC accuracy performance is equivalent between the two grades. |
| Input Bias Current (typ) | 2 nA | 2 nA | Low and equal bias current keeps errors small in high-impedance precision circuits. |
| Gain Bandwidth Product | 10 MHz | 10 MHz | Same bandwidth supports identical AC signal handling and stability behavior. |
| Input Voltage Noise Density | 2.8 nV/√Hz | 2.8 nV/√Hz | Equal noise density preserves low-noise performance in precision signal chains. |
| Operating Temperature Range | -40 °C to +125 °C | -40 °C to +125 °C | Identical temperature range ensures equivalent environmental robustness. |
| Package / Mounting | 8-Lead MSOP, Surface Mount | 8-Lead MSOP, Surface Mount | Same package and footprint allow direct board-level interchangeability. |
| Slew Rate | 2.5 V/µs | 2.5 V/µs | Matching slew rate maintains identical large-signal transient response. |
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 | AD8676ARMZ | AD8676BRMZ |
|---|---|---|
| Part Status | Active | Active |
| Amplifier Type | General Purpose | General Purpose |
| Number of Circuits | 2 | 2 |
| 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 | 2 nA |
| Voltage - Input Offset | 12 µV | 12 µV |
| Supply Current | 2.7mA (x2 Channels) | 2.7mA (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 |
Frequently asked questions
What is the difference between the AD8676ARMZ and AD8676BRMZ?
The AD8676ARMZ and AD8676BRMZ are both dual, precision, low-noise operational amplifiers from Analog Devices in 8-lead MSOP (RM-8) packages. The suffix difference (A vs B) denotes the grade, which specifies the guaranteed offset voltage and temperature drift limits. The B grade offers tighter offset voltage and drift specifications than the A grade, while both share the same core electrical performance such as 2.8 nV/√Hz voltage noise and 10 MHz gain bandwidth.
Are the AD8676ARMZ and AD8676BRMZ pin-compatible and package-compatible?
Yes. Both devices are supplied in the same 8-lead MSOP (RM-8) package with identical pin assignments, so they are footprint- and pin-compatible. The difference is limited to the guaranteed grade specifications, not the package or pinout.
What offset voltage specifications distinguish the A and B grades?
The B grade (AD8676BRMZ) guarantees a lower maximum input offset voltage than the A grade (AD8676ARMZ). Designers should consult the Analog Devices AD8676 datasheet for the exact maximum offset voltage and offset voltage drift limits for each grade, since these are the primary grade-defining parameters.
Do the AD8676ARMZ and AD8676BRMZ share the same noise and bandwidth performance?
Yes. Both grades are specified with a typical voltage noise density of 2.8 nV/√Hz and a gain bandwidth product of 10 MHz, along with a typical slew rate of 2.5 V/µs. The grade distinction is based on DC precision (offset and drift), not on AC noise or bandwidth.
What supply voltage range do the AD8676ARMZ and AD8676BRMZ support?
Both devices operate from a dual supply of ±5 V to ±15 V (or an equivalent single supply of 10 V to 30 V). They are specified for operation over the −40 °C to +125 °C temperature range.
Can the AD8676ARMZ be used as a drop-in replacement for the AD8676BRMZ?
Because both parts are pin- and package-compatible, the AD8676ARMZ can physically replace the AD8676BRMZ. However, the A grade has looser guaranteed offset voltage and drift limits, so the replacement is only acceptable if the application's error budget tolerates the A-grade specifications. The reverse substitution (B for A) is generally acceptable where the tighter B-grade limits are met.
Which grade should be selected for precision DC applications?
For precision DC applications requiring tighter offset voltage and lower offset drift, the AD8676BRMZ (B grade) is the appropriate choice because its guaranteed limits are tighter than those of the AD8676ARMZ (A grade). For applications where the A-grade limits are sufficient, the AD8676ARMZ provides the same noise and bandwidth performance at a lower grade cost.