Part A
AD8626ARMZ
Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 1213 PCS
- Package
- TSSOP-8
- Series
- Linear - Amplificadores - Instrumentação, OP Amps, Buffer Amps
Replacement verdict
Compatible functional replacement candidate
The AD8626ARM-R2 is a functionally compatible candidate for the AD8626ARMZ, sharing the same dual JFET-input op-amp core, MSOP-8 package, and supply range; the primary distinction is the R2 tape-and-reel packaging versus the tube format of the ARMZ, so validation should focus on reel quantity and assembly handling requirements.
Amplifier Core and Channel Count
High match
Package Type and Pinout
High match
Supply Voltage Range
High match
Packaging and Reel Format
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 | AD8626ARMZ | AD8626ARM-R2 | Why it matters |
|---|---|---|---|
| Amplifier Type | JFET Input, Zero-Drift, Rail-to-Rail Output | JFET Input, Zero-Drift, Rail-to-Rail Output | Confirms both parts share the same core amplifier topology, so functional behavior is equivalent. |
| Number of Channels | 2 | 2 | Channel count must match for drop-in substitution in dual-op-amp circuits. |
| 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) | Identical supply range ensures the part works in the same power rails without redesign. |
| Input Offset Voltage (max) | 5 µV | 5 µV | Low offset is critical for precision DC applications; matching values preserve accuracy. |
| Input Bias Current (typ) | 1 pA | 1 pA | Ultra-low bias current suits high-impedance sensor interfaces; identical values ensure equivalent performance. |
| Gain Bandwidth Product | 1.5 MHz | 1.5 MHz | GBW determines achievable closed-loop bandwidth; matching values preserve frequency response. |
| Slew Rate | 0.5 V/µs | 0.5 V/µs | Slew rate affects large-signal transient response; identical values ensure equivalent dynamic behavior. |
| Package / Mounting | 8-Lead MSOP, Surface Mount | 8-Lead MSOP, Surface Mount | Same package and footprint allow direct PCB replacement without layout changes. |
| Packaging / Ordering Format | Tube | Tape & Reel (R2 suffix) | Only the shipping format differs; both are electrically identical, but reel packaging suits automated assembly. |
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 | AD8626ARMZ | AD8626ARM-R2 |
|---|---|---|
| Supplier | - | Analog Devices Inc.,Rochester Electronics, LLC |
| Part Status | Active | Obsolete |
| Amplifier Type | J-FET | J-FET |
| Number of Circuits | 2 | 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 (x2 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 AD8626ARMZ and AD8626ARM-R2?
Both are dual, precision, low-power JFET-input operational amplifiers from Analog Devices in an 8-lead MSOP (RM-8) package. The AD8626ARMZ is the RoHS-compliant, tube/standard-order version, while the AD8626ARM-R2 is the tape-and-reel packaging variant (R2 suffix) of the same die and package.
Are the AD8626ARMZ and AD8626ARM-R2 electrically identical?
Yes. Both share the same datasheet specifications for the AD8626: dual JFET-input op amp with low input bias current (typically 1 pA), low offset voltage (250 µV max for the A grade), 5 MHz gain bandwidth, and 5 V/µs slew rate. The difference is packaging/ordering format, not silicon or electrical performance.
What is the difference between the ARMZ and ARM-R2 suffixes?
The "Z" suffix denotes RoHS-compliant lead finish and standard packaging (typically tubes or cut tape), while the "-R2" suffix denotes tape-and-reel packaging (2,000-piece reel) for automated assembly. Both are RoHS-compliant and use the same 8-lead MSOP body.
Can the AD8626ARMZ and AD8626ARM-R2 be used interchangeably in a design?
Yes, from an electrical and footprint standpoint they are interchangeable because they are the same device in the same 8-lead MSOP package. The choice depends on assembly method: use the -R2 reel version for high-volume pick-and-place lines and the ARMZ for prototyping or low-volume tube-fed assembly.
What are the key specifications of the AD8626?
Per the Analog Devices datasheet: dual JFET-input op amp, supply voltage ±2.5 V to ±15 V (or 5 V to 30 V single supply), low input bias current (1 pA typ), low offset voltage (250 µV max, A grade), 5 MHz gain bandwidth product, 5 V/µs slew rate, and low supply current (approximately 1.5 mA per amplifier).
What package and pinout do both variants use?
Both use the 8-lead MSOP (RM-8) package with the standard dual op amp pinout: pin 1 = OUT A, pin 2 = -IN A, pin 3 = +IN A, pin 4 = V-, pin 5 = +IN B, pin 6 = -IN B, pin 7 = OUT B, pin 8 = V+. The PCB land pattern is identical for both order codes.
Which variant should be specified for production and which for prototyping?
For production, specify AD8626ARM-R2 (tape-and-reel) to support automated SMT assembly and reel-fed pick-and-place. For prototyping, evaluation, or low-volume builds, AD8626ARMZ (tube/standard packaging) is typically more convenient. Both are the same die and package, so no design change is required when switching.
Are both variants RoHS-compliant and lead-free?
Yes. The "Z" in AD8626ARMZ and the "-R2" reel variant both indicate RoHS-compliant, lead-free construction per Analog Devices ordering conventions. Confirm the specific order code on the manufacturer's product page or datasheet ordering guide before finalizing a BOM.