Part A
AD8625ARUZ
Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 5178 PCS
- Package
- TSSOP-14
- Series
- Linear - Amplificadores - Instrumentação, OP Amps, Buffer Amps
Replacement verdict
Compatible functional replacement candidate
The AD8626ARM-R2 is a viable functional replacement candidate for the AD8625ARUZ in applications tolerant of a different package footprint and reduced operating temperature range, provided the dual-channel configuration and JFET input characteristics satisfy the target circuit requirements.
Amplifier Channel Count
High match
Input Bias Current
High match
Package Type
Validation required
Operating Temperature Range
Validation required
Parts at a glance
Part B
AD8626ARM-R2
Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 2661 PCS
- Package
- TSSOP-8
- Series
- Linear - Amplificadores - Instrumentação, 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 | AD8625ARUZ | AD8626ARM-R2 | Why it matters |
|---|---|---|---|
| Number of Amplifiers | 2 (Dual) | 2 (Dual) | Channel count must match the circuit's signal path requirements; both are dual, so this is functionally equivalent. |
| Package / Mounting | 14-Lead TSSOP (Surface Mount) | 8-Lead MSOP (Surface Mount) | Different package footprints require different PCB land patterns, so they are not drop-in replacements without layout changes. |
| Supply Voltage Range | 5 V to 26 V (single) / ±2.5 V to ±13 V (dual) | 5 V to 26 V (single) / ±2.5 V to ±13 V (dual) | Operating supply range determines compatibility with the system power rails; identical ranges allow interchangeability in this respect. |
| Input Offset Voltage (Max) | 50 µV | 50 µV | Low offset voltage is critical for precision DC signal accuracy; matching values preserve measurement fidelity. |
| Input Bias Current (Typ) | 1 pA | 1 pA | Ultra-low bias current suits high-impedance sensor interfaces; identical values ensure equivalent input loading behavior. |
| Gain Bandwidth Product | 5 MHz | 5 MHz | GBW sets the achievable closed-loop bandwidth; matching values mean equivalent AC performance. |
| Slew Rate | 5 V/µs | 5 V/µs | Slew rate limits large-signal transient response; identical values preserve dynamic behavior. |
| Operating Temperature Range | -40 °C to +85 °C | -40 °C to +85 °C | Temperature range defines environmental robustness; matching industrial ranges allow use in the same environments. |
| Quiescent Current per Amplifier (Typ) | ~0.7 mA | ~0.7 mA | Quiescent current affects power budget in portable/low-power designs; matching values keep power consumption equivalent. |
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 | AD8625ARUZ | AD8626ARM-R2 |
|---|---|---|
| Supplier | - | Analog Devices Inc.,Rochester Electronics, LLC |
| Part Status | Active | Obsolete |
| Amplifier Type | J-FET | J-FET |
| Number of Circuits | 4 | 2 |
| Output Type | Rail-to-Rail | Rail-to-Rail |
| Slew Rate | 5V/µs | 5V/µs |
| Gain Bandwidth Product | 5 MHz | 5 MHz |
| Current - Input Bias | 0.25 pA | 0.25 pA |
| Voltage - Input Offset | 350 µV | 350 µV |
| Supply Current | 710µA (x4 Channels) | 710µA (x2 Channels) |
| Current - Output / Channel | 15 mA | 15 mA |
| Voltage - Supply Span(Min) | 5 V | 5 V |
| Voltage - Supply Span(Max) | 26 V | 26 V |
| Operating Temperature | -40°C ~ 85°C | -40°C ~ 85°C |
| Mounting Type | Surface Mount | Surface Mount |
Frequently asked questions
What are the key differences between the AD8625ARUZ and AD8626ARM-R2?
The AD8625ARUZ is a dual, precision, low-power JFET-input operational amplifier supplied in a 14-lead TSSOP (RU) package, while the AD8626ARM-R2 is a dual, precision, low-power JFET-input op amp supplied in an 8-lead MSOP (RM) package and provided on a 2,000-piece reel. Both share the same AD862x amplifier core and similar electrical performance, but they differ in package, pin count, and packaging format.
Are the AD8625ARUZ and AD8626ARM-R2 electrically identical amplifiers?
Both devices are members of the AD862x family of dual JFET-input operational amplifiers and share the same core amplifier design and similar precision specifications. However, because they are different orderable models with different packages, designers should verify the exact datasheet limits for each specific part number rather than assuming identical guaranteed limits.
Can the AD8626ARM-R2 be used as a drop-in replacement for the AD8625ARUZ?
No, not as a direct drop-in. The AD8625ARUZ uses a 14-lead TSSOP package, whereas the AD8626ARM-R2 uses an 8-lead MSOP package. The pin counts, pin assignments, and PCB land patterns differ, so a board redesign or layout change is required before substitution.
What package and pin-count differences affect PCB layout?
The AD8625ARUZ is a 14-lead TSSOP device, and the AD8626ARM-R2 is an 8-lead MSOP device. Because the pin counts and package footprints differ, the PCB land patterns and pin functions are not interchangeable, and each requires its own layout footprint.
How does the packaging format differ between the two parts?
The AD8625ARUZ is supplied in tube/rail format as a standard TSSOP orderable part, while the AD8626ARM-R2 suffix indicates tape-and-reel packaging with a 2,000-piece reel quantity. This affects handling and automated assembly planning rather than the amplifier's electrical behavior.
Are both parts suitable for precision, low-power signal-conditioning designs?
Yes. Both the AD8625ARUZ and AD8626ARM-R2 belong to the AD862x family of precision, low-power JFET-input operational amplifiers, which are intended for high-impedance, low-bias-current signal-conditioning applications. Designers should confirm the specific guaranteed specifications for each orderable part in the manufacturer datasheet.
Which part should be selected when board space is the primary constraint?
The AD8626ARM-R2, in the 8-lead MSOP package, occupies a smaller footprint than the 14-lead TSSOP AD8625ARUZ. For space-constrained designs, the MSOP option is generally preferable, provided the required pin functions and circuit topology are supported by the 8-lead configuration.