Part A
AD8602DRZ
Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 6122 PCS
- Package
- SOIC-8
- Series
- Linear - Amplificadores - Instrumentação, OP Amps, Buffer Amps
Replacement verdict
Compatible functional replacement candidate
The AD8606AR-REEL7 is a viable functional replacement candidate for the AD8602DRZ, sharing the same dual operational amplifier architecture, CMOS rail-to-rail input/output topology, and unity-gain stable design. Both devices operate across a comparable supply voltage range and are available in standard surface-mount packages, making them suitable for signal conditioning and sensor interface applications. Designers should validate package footprint compatibility and confirm bandwidth and noise performance against their specific circuit requirements before finalizing the substitution.
Amplifier Architecture
High match
Input/Output Topology
High match
Package Type
Validation required
Bandwidth and Noise Performance
Validation required
Parts at a glance
Part B
AD8606AR-REEL7
Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 3692 PCS
- Package
- SOIC-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 | AD8602DRZ | AD8606AR-REEL7 | Why it matters |
|---|---|---|---|
| Number of Amplifiers | 2 (Dual) | 2 (Dual) | Both are dual op-amps, so channel count is compatible for substitution. |
| Supply Voltage Range | 2.7 V to 5.5 V | 2.7 V to 5.5 V | Identical supply range means both operate in the same low-voltage systems. |
| Input Offset Voltage (max) | 500 µV | 65 µV | Lower offset improves DC precision; the AD8606 is significantly more precise. |
| Gain Bandwidth Product | 8.4 MHz | 10 MHz | GBW sets the achievable signal bandwidth; the AD8606 offers slightly more bandwidth. |
| Input Bias Current (typ) | 0.2 pA | 0.2 pA | Very low CMOS input bias current suits high-impedance sensor interfaces for both. |
| Input Voltage Noise Density | 33 nV/√Hz | 8 nV/√Hz | Lower noise density benefits low-level signal amplification; the AD8606 is notably quieter. |
| Quiescent Current per Amplifier | 750 µA | 1.2 mA | Supply current affects power budget; the AD8602 is more power-efficient. |
| Package / Mounting | 8-SOIC (Surface Mount) | 8-SOIC (Surface Mount) | Same package and footprint allow direct board-level replacement. |
| Operating Temperature Range | -40 °C to +125 °C | -40 °C to +125 °C | Matching temperature ratings ensure 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 | AD8602DRZ | AD8606AR-REEL7 |
|---|---|---|
| Supplier | - | Analog Devices Inc.,Rochester Electronics, LLC |
| Series | DigiTrim® | DigiTrim® |
| Part Status | Active | Obsolete |
| Amplifier Type | CMOS | CMOS |
| Number of Circuits | 2 | 2 |
| Output Type | Rail-to-Rail | Rail-to-Rail |
| Slew Rate | 6V/µs | 5V/µs |
| Gain Bandwidth Product | 8.4 MHz | 10 MHz |
| Current - Input Bias | 0.2 pA | 1 pA |
| Voltage - Input Offset | 1.3 mV | 80 µV |
| Supply Current | 750µA (x2 Channels) | 1mA (x2 Channels) |
| Current - Output / Channel | 50 mA | 80 mA |
| Voltage - Supply Span(Min) | 2.7 V | 2.7 V |
| Voltage - Supply Span(Max) | 5.5 V | 5.5 V |
| Operating Temperature | -40°C ~ 125°C | -40°C ~ 125°C |
| Mounting Type | Surface Mount | Surface Mount |
Frequently asked questions
What are the primary differences between the AD8602DRZ and the AD8606AR-REEL7?
The AD8602DRZ is a dual, rail-to-rail input/output operational amplifier supplied in an 8-lead SOIC package (DRZ suffix), while the AD8606AR-REEL7 is a dual, rail-to-rail input/output amplifier supplied in an 8-lead MSOP package (AR suffix) on a 7-inch reel. Both are members of Analog Devices' DigiTrim CMOS op amp family, but they differ in package type, packaging format, and specified performance grades.
Are the AD8602DRZ and AD8606AR-REEL7 pin-compatible?
No. The AD8602DRZ uses the 8-lead SOIC (R-8) package, while the AD8606AR-REEL7 uses the 8-lead MSOP (RM-8) package. These are different package footprints with different PCB land patterns, so they are not drop-in pin-compatible replacements without a board redesign.
Do both parts share the same supply voltage range and rail-to-rail capability?
Yes. Both the AD8602 and AD8606 are specified for single-supply operation from 2.7 V to 5.5 V (and dual supplies of ±1.35 V to ±2.75 V), and both feature rail-to-rail input and output swing. They are fabricated on Analog Devices' CMOS process with DigiTrim trimming for offset voltage.
How do the input offset voltage specifications compare between the two devices?
Both the AD8602 and AD8606 are DigiTrim-trimmed amplifiers with low input offset voltage. Per Analog Devices datasheets, the AD8602 specifies a typical offset voltage of 80 µV (500 µV max), and the AD8606 specifies a typical offset voltage of 65 µV (250 µV max). The AD8606 offers a tighter maximum offset voltage specification than the AD8602.
What is the difference in gain bandwidth and slew rate between the AD8602DRZ and AD8606AR-REEL7?
Both devices have a unity-gain bandwidth of 8 MHz. The AD8602 specifies a slew rate of 5 V/µs, while the AD8606 specifies a slew rate of 5 V/µs as well. Their AC performance is essentially equivalent, making them suitable for similar signal-conditioning applications.
Can the AD8606AR-REEL7 be used as a substitute for the AD8602DRZ in an existing design?
Not as a direct drop-in. Although the electrical performance is very similar, the AD8606AR-REEL7 is in an MSOP package while the AD8602DRZ is in SOIC. Substitution requires verifying the PCB footprint, reflow profile, and any layout-dependent parasitics. Electrical specifications should also be re-validated against the target design's requirements.
What packaging format does the REEL7 suffix indicate on the AD8606AR-REEL7?
The "REEL7" suffix indicates that the AD8606AR-REEL7 is supplied on a 7-inch tape-and-reel carrier, which is the standard format for automated pick-and-place assembly. The AD8602DRZ is supplied in tube or tray format depending on the ordering quantity, as indicated by its DRZ suffix without a reel designator.
Are both amplifiers suitable for low-power, precision signal-conditioning applications?
Yes. Both the AD8602 and AD8606 are CMOS rail-to-rail amplifiers with low input bias current (typically 1 pA), low offset voltage, and low supply current (approximately 750 µA per amplifier typical). They are commonly used in precision sensor interfaces, active filters, and portable instrumentation where low power and rail-to-rail swing are required.