Part A
AD8674ARUZ
テキサス・インスツルメンツ
- Lifecycle
- Active
- Stock
- 2550 個数
- Package
- TSSOP-14
- Series
- リニアアンプ - 計装用、オペアンプ、バッファアンプ
Replacement verdict
Compatible functional replacement candidate
The AD8671ARM-R2 is a single-channel operational amplifier in an MSOP-8 package, while the AD8674ARUZ is a quad-channel device in a TSSOP-14 package. Although both share the same precision low-noise bipolar input architecture and similar supply voltage range, the channel count and package footprint differ, so the AD8671ARM-R2 cannot serve as a direct drop-in substitute for the AD8674ARUZ in existing quad layouts. It may be considered only where a single amplifier channel is sufficient and the board is redesigned accordingly.
Channel Count
Not compatible
Package Type
Not compatible
Input Architecture
High match
Supply Voltage Range
Validation required
Parts at a glance
Part B
AD8671ARM-R2
テキサス・インスツルメンツ
- Lifecycle
- Active
- Stock
- 2163 個数
- Package
- TSSOP-8
- Series
- リニアアンプ - 計装用、オペアンプ、バッファアンプ
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 | AD8671ARM-R2 | Why it matters |
|---|---|---|---|
| Number of Amplifiers | 4 (Quad) | 1 (Single) | Determines how many independent op-amp channels are available in one package; a quad and a single are not directly interchangeable in a given circuit. |
| Package / Mounting | 14-Lead TSSOP (surface mount) | 8-Lead MSOP (surface mount) | Footprint and pin count must match the PCB layout; different packages require board redesign. |
| Input Offset Voltage (max) | 75 µV | 75 µV | Low offset is critical for precision DC signal conditioning; matching values indicate comparable DC accuracy. |
| Input Bias Current (typ) | 3 nA | 3 nA | Low bias current minimizes errors in high-impedance sensor and feedback networks. |
| Gain Bandwidth Product | 10 MHz | 10 MHz | Sets the achievable closed-loop bandwidth and AC performance; identical GBW supports similar dynamic behavior. |
| Slew Rate | 4 V/µs | 4 V/µs | Determines large-signal transient response and full-power bandwidth; matching slew rates indicate similar dynamic capability. |
| Input Voltage Noise (1 kHz) | 2.8 nV/√Hz | 2.8 nV/√Hz | Low voltage noise is essential for low-level signal amplification; identical noise supports comparable SNR performance. |
| Supply Voltage Range | ±5 V to ±15 V (dual) | ±5 V to ±15 V (dual) | Defines the operating supply headroom and compatibility with system power rails. |
| Operating Temperature Range | -40 °C to +125 °C | -40 °C to +125 °C | Confirms both parts are rated for industrial/extended temperature environments. |
| Quiescent Supply Current (per amplifier, typ) | 3 mA (per amp) | 3 mA | Affects total power budget; per-channel current is comparable, but total package current differs with channel count. |
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 | AD8671ARM-R2 |
|---|---|---|
| Supplier | - | Analog Devices Inc.,Rochester Electronics, LLC |
| Part Status | Active | Obsolete |
| Amplifier Type | General Purpose | General Purpose |
| Number of Circuits | 4 | 1 |
| 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 |
| Current - Output / Channel | 20 mA | 30 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 the AD8671ARM-R2?
The AD8674ARUZ is a quad operational amplifier supplied in a 14-lead TSSOP package, while the AD8671ARM-R2 is a single 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, package, and pinout, so they are not pin-compatible substitutes.
Are the AD8674ARUZ and AD8671ARM-R2 electrically identical per amplifier channel?
Both devices belong to the same AD8671/AD8672/AD8674 precision op amp family and share the same core amplifier design and typical performance characteristics per channel, including low voltage noise and low offset voltage. However, designers should confirm the exact datasheet limits for each specific grade and package before relying on interchangeability.
Can the AD8671ARM-R2 be used as a direct replacement for one channel of the AD8674ARUZ?
No. The AD8671ARM-R2 is a single op amp in an 8-lead MSOP package, whereas the AD8674ARUZ is a quad op amp in a 14-lead TSSOP package. The package, pin count, and pinout differ, so a direct drop-in replacement is not possible without a PCB redesign.
What are the package and pinout differences between the two parts?
The AD8674ARUZ uses a 14-lead TSSOP package housing four independent op amps with a standard quad pinout. The AD8671ARM-R2 uses an 8-lead MSOP package housing a single op amp with a standard single-op-amp pinout. These differences affect board layout, land patterns, and channel count.
Do both parts share the same supply voltage range and operating conditions?
Both devices are specified for operation on dual supplies typically in the ±5 V to ±15 V range (or equivalent single-supply rails) per the Analog Devices AD8671/AD8672/AD8674 datasheet. Designers should verify the exact specified supply range and operating temperature conditions for each package option in the official datasheet.
Which part should be selected for a multi-channel precision signal chain?
The AD8674ARUZ is the appropriate choice when four matched precision op amps are needed in a compact 14-lead TSSOP, reducing board space versus four discrete singles. The AD8671ARM-R2 is suited to single-channel applications where an 8-lead MSOP footprint is preferred.
Are both parts available in RoHS-compliant packaging?
The AD8674ARUZ and AD8671ARM-R2 are both offered in RoHS-compliant package options per Analog Devices ordering information. Customers should confirm the specific ordering code and compliance status on the manufacturer datasheet or authorized distributor listing before purchase.