Part A
AD8675ARZ
아날로그 디바이스(주)
- Lifecycle
- Active
- Stock
- 5946 PCS
- Package
- SOIC-8
- Series
- 선형 증폭기 - 계측기, 연산 증폭기, 완충 증폭기
Replacement verdict
Compatible functional replacement candidate
The AD8675ARZ and AD8672AR-REEL share the same dual operational amplifier architecture, SOIC-8 package, and comparable supply voltage range, making the AD8675ARZ a viable functional replacement candidate for the AD8672AR-REEL in many precision signal-conditioning applications. However, the AD8675ARZ offers lower voltage noise and lower input bias current, while the AD8672AR-REEL provides higher output current drive and a wider operating temperature range. Designers should validate gain bandwidth, slew rate, and thermal margins against the target circuit before committing to substitution.
Package Type
High match
Channel Count
High match
Supply Voltage Range
Validation required
Gain Bandwidth Product
Validation required
Parts at a glance
Part B
AD8672AR-REEL
아날로그 디바이스(주)
- Lifecycle
- Active
- Stock
- 4217 PCS
- Package
- SOIC-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 | AD8675ARZ | AD8672AR-REEL | Why it matters |
|---|---|---|---|
| Number of Amplifiers | 1 | 2 | Determines how many independent signal channels are available in a single package; a dual op-amp cannot directly replace a single op-amp in a per-channel sense without layout changes. |
| Input Offset Voltage (max) | 75 µV | 125 µV | Lower offset voltage improves DC accuracy; a difference here affects precision in high-gain or DC-coupled signal chains. |
| Input Voltage Noise Density (1 kHz) | 2.8 nV/√Hz | 8 nV/√Hz | Noise density directly impacts the achievable signal-to-noise ratio in low-level sensor and audio applications; the AD8675 is significantly quieter. |
| Gain Bandwidth Product | 10 MHz | 10 MHz | GBW sets the closed-loop bandwidth and settling behavior; matching values indicate similar dynamic performance for a given gain configuration. |
| Supply Current per Amplifier (typ) | 2.5 mA | 3 mA | Quiescent current affects power budget and thermal design, especially in multi-channel or battery-powered systems. |
| Input Bias Current (typ) | 0.5 nA | 3 nA | Low bias current minimizes errors in high-impedance source applications such as photodiode and precision sensor front-ends. |
| Package | 8-Lead SOIC | 8-Lead SOIC | Package footprint and pinout must match for board-level interchangeability; identical SOIC packages allow the same PCB land pattern. |
| Supply Voltage Range | ±5 V to ±15 V | ±5 V to ±15 V | Operating supply range determines compatibility with the system power rails; matching ranges mean either part can operate in the same supply environment. |
| Operating Temperature Range | -40 °C to +125 °C | -40 °C to +125 °C | Temperature range confirms suitability for industrial and automotive environments; matching ranges indicate equivalent environmental robustness. |
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 | AD8675ARZ | AD8672AR-REEL |
|---|---|---|
| Supplier | - | Analog Devices Inc.,Rochester Electronics, LLC |
| Part Status | Active | Obsolete |
| Amplifier Type | General Purpose | General Purpose |
| Number of Circuits | 1 | 2 |
| Slew Rate | 2.5V/µs | 4V/µs |
| Gain Bandwidth Product | 10 MHz | 10 MHz |
| Current - Input Bias | 500 pA | 3 nA |
| Voltage - Input Offset | 10 µV | 20 µV |
| Supply Current | 2.5mA | 3mA (x2 Channels) |
| Current - Output / Channel | 35 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 primary differences between the AD8675ARZ and AD8672AR-REEL?
The AD8675ARZ is a single, precision, low-noise operational amplifier in an 8-lead SOIC package, while the AD8672AR-REEL is a dual, precision, low-noise operational amplifier supplied in tape-and-reel packaging. The AD8675ARZ is a single-channel device, whereas the AD8672AR-REEL contains two independent amplifiers per package.
Are the AD8675ARZ and AD8672AR-REEL pin-compatible?
No. The AD8675ARZ is a single op amp in an 8-lead SOIC package, and the AD8672AR-REEL is a dual op amp in an 8-lead SOIC package. Although both use the same 8-lead SOIC footprint, the pin functions differ because the AD8672 assigns pins to two separate amplifiers, so they are not direct drop-in replacements for each other.
What is the input voltage noise density of these amplifiers?
Both the AD8675 and AD8672 are specified with a typical input voltage noise density of 2.8 nV/√Hz at 1 kHz, making them suitable for low-noise precision signal conditioning applications.
What supply voltage range do the AD8675ARZ and AD8672AR-REEL support?
Both devices operate from a dual supply of ±5 V to ±15 V, corresponding to a total supply voltage of 10 V to 30 V, and are specified for operation over the extended industrial temperature range of −40°C to +125°C.
What are the typical offset voltage and drift specifications?
The AD8675 and AD8672 both feature a typical input offset voltage of 10 µV (75 µV maximum) and a typical offset voltage drift of 0.2 µV/°C, supporting high-precision DC applications.
What is the gain bandwidth product and slew rate of these op amps?
Both the AD8675 and AD8672 provide a gain bandwidth product of 10 MHz and a slew rate of 2.5 V/µs, allowing them to handle moderate-speed precision signal paths.
Why would a design choose the AD8672AR-REEL over the AD8675ARZ?
The AD8672AR-REEL provides two amplifiers in a single 8-lead SOIC package, reducing board space and component count in dual-channel signal chains, and its tape-and-reel format supports automated high-volume assembly. The AD8675ARZ is preferred when only one amplifier channel is needed.
Do both parts share the same operating temperature range and package type?
Yes. Both the AD8675ARZ and AD8672AR-REEL are offered in an 8-lead SOIC package and are specified over the −40°C to +125°C industrial temperature range, though the AD8672AR-REEL is supplied in tape-and-reel packaging for production use.