Part A
AD8676ARMZ
Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 6420 Stückzahl
- Package
- MSOP-8
- Series
- Linear-Verstärker.Instrumentation, OP-Verstärker, Pufferverstärker
Replacement verdict
Compatible functional replacement candidate
The AD8675ARMZ and AD8676ARMZ are both precision, low-noise, rail-to-rail output operational amplifiers in the same 8-lead MSOP package with identical pinout, making them strong functional replacement candidates. The AD8676ARMZ offers a higher slew rate and wider gain-bandwidth product, while the AD8675ARMZ provides lower input bias current and lower voltage noise. Designers should validate supply range, capacitive load stability, and closed-loop performance in the target circuit before substituting.
Package and Pinout
High match
Supply Voltage Range
High match
Gain-Bandwidth Product
Validation required
Input Bias Current
Validation required
Parts at a glance
Part B
AD8675ARMZ
Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 5504 Stückzahl
- Package
- MSOP-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 | AD8675ARMZ | AD8676ARMZ | Why it matters |
|---|---|---|---|
| Number of Amplifiers | 1 | 2 | Determines whether the package provides a single or dual op-amp, which directly affects channel count and board layout. |
| Input Offset Voltage (Max) | 75 µV | 75 µV | Low offset voltage is critical for precision DC signal conditioning and minimizes output error. |
| Input Voltage Noise Density | 2.8 nV/√Hz | 2.8 nV/√Hz | Low voltage noise is essential for high-resolution and low-level signal amplification. |
| Gain Bandwidth Product | 10 MHz | 10 MHz | Sets the achievable closed-loop bandwidth and speed for the amplifier in a given configuration. |
| Slew Rate | 2.5 V/µs | 2.5 V/µs | Determines how fast the output can respond to large signal changes without distortion. |
| Supply Voltage Range | ±5 V to ±15 V | ±5 V to ±15 V | Defines the operating supply headroom and compatibility with the system power rails. |
| Supply Current per Amplifier | 2.5 mA | 2.5 mA | Affects power budget and thermal performance in the target design. |
| Input Bias Current | 2 nA | 2 nA | Low bias current reduces errors in high-impedance sensor and precision applications. |
| Package | 8-Lead MSOP | 8-Lead MSOP | Package compatibility ensures the part can be placed on the same footprint, though pinout differs between single and dual. |
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Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | AD8676ARMZ | 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 primary differences between the AD8675ARMZ and AD8676ARMZ operational amplifiers?
The AD8675ARMZ is a single, precision, 36 V operational amplifier, while the AD8676ARMZ is a dual, precision, 36 V operational amplifier. Both are offered in an 8-lead MSOP (ARMZ) package, but the AD8676 integrates two independent amplifier channels in the same footprint, whereas the AD8675 provides one channel with additional pin availability for offset nulling or other functions depending on the datasheet configuration.
Are the AD8675ARMZ and AD8676ARMZ pin-compatible in the same MSOP-8 package?
No. Although both devices use an 8-lead MSOP package, their pinouts differ because the AD8675 is a single amplifier and the AD8676 is a dual amplifier. The AD8676 assigns pins to two separate amplifier inputs and outputs, while the AD8675 uses its pins for a single amplifier with different functional assignments. Designers must consult the respective datasheets before considering any board-level substitution.
Do the AD8675ARMZ and AD8676ARMZ share the same supply voltage range and quiescent current specifications?
Both devices operate from a dual supply of ±5 V to ±15 V (or a single supply of 10 V to 30 V) per their manufacturer datasheets. However, the quiescent current differs: the AD8675ARMZ typically draws approximately 3 mA per amplifier, while the AD8676ARMZ, containing two amplifiers, has a higher total quiescent current specification. Designers should verify the exact supply current limits in the Analog Devices datasheets for each part.
How do the noise and offset voltage characteristics of the AD8675ARMZ and AD8676ARMZ compare?
Both amplifiers are members of the same precision op-amp family and share similar low-noise and low-offset specifications. The AD8675ARMZ features a typical voltage noise density of 2.8 nV/√Hz and a maximum offset voltage in the microvolt range, and the AD8676ARMZ specifies comparable noise and offset performance per channel. For exact limits, refer to the respective Analog Devices datasheets, as individual grade specifications may vary.
Can the AD8676ARMZ be used as a drop-in replacement for two AD8675ARMZ devices in a dual-channel design?
Not as a direct drop-in replacement. While the AD8676ARMZ provides two channels in one MSOP-8 package, its pinout, PCB land pattern connections, and thermal considerations differ from two separate AD8675ARMZ packages. A redesign of the PCB layout and verification of channel-to-channel crosstalk, power dissipation, and decoupling are required before substituting two AD8675 devices with a single AD8676.
What are the operating temperature ranges for the AD8675ARMZ and AD8676ARMZ?
Both the AD8675ARMZ and AD8676ARMZ are specified for the industrial temperature range of −40 °C to +125 °C, as stated in the Analog Devices datasheets. The ARMZ suffix denotes the 8-lead MSOP package with this temperature grade, so both parts are suitable for industrial and automotive-adjacent applications within that range.
Which applications typically favor the AD8675ARMZ versus the AD8676ARMZ?
The AD8675ARMZ is typically chosen for single-channel precision signal chains where board space is less constrained or where offset nulling pins are beneficial, such as precision instrumentation and medical equipment front ends. The AD8676ARMZ is preferred in dual-channel designs requiring matched amplifier pairs in a compact footprint, such as differential signal conditioning, active filters, and multi-channel data acquisition systems, where channel-to-channel matching and board density are critical.