Part A
AD8674ARUZ
Công ty Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 2550 PCS
- Package
- TSSOP-14
- Series
- Linear - Amplifiers - Instrumentation, OP Amps, Buffer Amps
Replacement verdict
Compatible functional replacement candidate
The AD8674ARUZ and AD8672ARM-R2 share the same dual/quad precision op-amp core, supply range, and TSSOP-family surface-mount packaging, making them a viable functional replacement candidate in many designs. However, the AD8674ARUZ is a quad device in a 14-lead TSSOP while the AD8672ARM-R2 is a dual device in an 8-lead MSOP, so channel count and footprint differ and board-level validation is required before substitution.
Channel Count
Validation required
Package Type
Validation required
Supply Voltage Range
High match
Amplifier Architecture
High match
Parts at a glance
Part B
AD8672ARM-R2
Công ty Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 2764 PCS
- Package
- TSSOP-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 | AD8674ARUZ | AD8672ARM-R2 | Why it matters |
|---|---|---|---|
| Number of Amplifiers | 4 | 2 | Determines how many independent op-amp channels are available in a single package, directly affecting circuit density and channel count. |
| Package / Mounting Type | 14-Lead TSSOP (Surface Mount) | 8-Lead MSOP (Surface Mount) | Footprint and pin count must match the PCB layout; different packages are not drop-in compatible. |
| Input Offset Voltage (Max) | 75 µV | 75 µV | Low offset voltage is critical for precision DC signal accuracy; matching values indicate comparable precision performance. |
| Input Noise Voltage Density | 2.8 nV/√Hz (typ) | 2.8 nV/√Hz (typ) | Low voltage noise is essential for low-level signal amplification; identical noise performance supports similar signal fidelity. |
| Gain Bandwidth Product | 10 MHz | 10 MHz | Defines the frequency range over which the amplifier provides useful gain; matching GBW supports similar dynamic performance. |
| Slew Rate | 4 V/µs | 4 V/µs | Affects large-signal transient response and maximum usable frequency; identical slew rate indicates comparable dynamic behavior. |
| Supply Voltage Range | ±5 V to ±15 V (dual) | ±5 V to ±15 V (dual) | Determines compatibility with the system power rails; matching ranges allow use in the same supply environment. |
| Input Bias Current | 12 nA (max) | 12 nA (max) | Low bias current minimizes errors in high-impedance circuits; matching values indicate similar input-stage behavior. |
| Operating Temperature Range | -40 °C to +125 °C | -40 °C to +85 °C | Defines the environmental range for reliable operation; the wider range of one part may be required for harsh or industrial applications. |
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 | AD8674ARUZ | AD8672ARM-R2 |
|---|---|---|
| Supplier | - | Analog Devices Inc.,Rochester Electronics, LLC |
| Part Status | Active | Obsolete |
| Amplifier Type | General Purpose | General Purpose |
| Number of Circuits | 4 | 2 |
| Slew Rate | 4V/µs | 4V/µs |
| Gain Bandwidth Product | 10 MHz | 10 MHz |
| Current - Input Bias | 3 nA | 3 nA |
| Voltage - Input Offset | 20 µV | 20 µV |
| Supply Current | 3mA (x4 Channels) | 3mA (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 ~ 85°C | -40°C ~ 125°C |
| Mounting Type | Surface Mount | Surface Mount |
Frequently asked questions
What are the key differences between the AD8674ARUZ and AD8672ARM-R2?
The AD8674ARUZ is a quad operational amplifier supplied in a 14-lead TSSOP package, while the AD8672ARM-R2 is a dual operational amplifier supplied in an 8-lead MSOP package. Both are precision, low-noise, low-offset-voltage op amps from Analog Devices, but they differ in channel count and package footprint.
Are the AD8674ARUZ and AD8672ARM-R2 electrically identical per channel?
Yes. Both devices share the same core amplifier design and are specified with the same typical voltage noise density of 2.8 nV/√Hz, low offset voltage, and 10 MHz gain bandwidth product. The primary differences are the number of channels and the package.
Can the AD8672ARM-R2 be used as a drop-in replacement for the AD8674ARUZ?
No. The AD8674ARUZ is a quad device in a 14-lead TSSOP package, whereas the AD8672ARM-R2 is a dual device in an 8-lead MSOP package. The pin counts, pin functions, and PCB land patterns differ, so a direct drop-in substitution is not possible without a redesign.
What are the supply voltage ranges for these two amplifiers?
Both the AD8674ARUZ and AD8672ARM-R2 operate from dual supplies of ±5 V to ±15 V, or equivalently from a single supply of 10 V to 30 V. This wide operating range supports precision signal conditioning in industrial and instrumentation applications.
What is the gain bandwidth product of the AD8674ARUZ and AD8672ARM-R2?
Both devices feature a gain bandwidth product of 10 MHz, allowing them to support wideband precision signal processing. This specification is common to both the quad AD8674ARUZ and the dual AD8672ARM-R2.
How do the package options affect thermal and layout considerations?
The AD8674ARUZ in the 14-lead TSSOP offers a compact footprint for quad-channel designs, while the AD8672ARM-R2 in the 8-lead MSOP is smaller and suited to space-constrained dual-channel layouts. Designers should verify thermal resistance and PCB land patterns against the respective Analog Devices datasheets for each package.
Are both devices specified for the same operating temperature range?
Both the AD8674ARUZ and AD8672ARM-R2 are specified over the industrial temperature range of −40 °C to +125 °C, making them suitable for demanding industrial and instrumentation environments.