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 AD8602DRZ and AD8606AR are both dual, low-noise, rail-to-rail CMOS operational amplifiers from Analog Devices, making the AD8606AR a viable functional replacement candidate for the AD8602DRZ in many designs. However, the two parts differ in package type, supply voltage range, and bandwidth, so validation against the target application's electrical and mechanical requirements is recommended before substitution.
Amplifier Channel Count
High match
Package Type
Validation required
Supply Voltage Range
Validation required
Gain Bandwidth Product
Validation required
Parts at a glance
Part B
AD8606AR
Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 8491 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 | 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 ensures the part can operate in the same rail configuration. |
| Input Offset Voltage (Max) | 500 µV | 65 µV | Lower offset in the AD8606 improves DC precision; a substitution may affect accuracy-critical circuits. |
| Gain Bandwidth Product | 8.4 MHz | 10 MHz | Bandwidth affects AC signal handling; the AD8606 offers slightly higher speed. |
| Input Bias Current (Typ) | 0.2 pA | 1 pA | Both are CMOS inputs with very low bias current, suitable for high-impedance sensor interfaces. |
| Supply Current per Amplifier (Typ) | 750 µA | 1.2 mA | Quiescent current affects power budget; the AD8602 is more power-efficient. |
| Package / Mounting | 8-Lead SOIC (Surface Mount) | 8-Lead SOIC (Surface Mount) | Same package and pinout allow direct board-level drop-in replacement. |
| Operating Temperature Range | -40 °C to +125 °C | -40 °C to +125 °C | Identical temperature ratings ensure equivalent environmental robustness. |
| Input Voltage Noise Density (Typ) | 33 nV/√Hz | 8 nV/√Hz | The AD8606 has significantly lower noise, which matters for low-level signal amplification. |
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 |
|---|---|---|
| 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?
The AD8602DRZ is a dual, low-noise, single-supply CMOS operational amplifier supplied in an 8-lead SOIC package (DRZ suffix), while the AD8606AR is a dual, low-noise, precision CMOS op amp supplied in an 8-lead MSOP package (AR suffix). Both are dual devices from Analog Devices, but they differ in package type, specified supply range, and detailed AC/DC specifications as documented in their respective datasheets.
Are the AD8602DRZ and AD8606AR pin-compatible?
No. The AD8602DRZ uses an 8-lead SOIC (DRZ) package, and the AD8606AR uses an 8-lead MSOP (AR) package. These are different package footprints with different PCB land patterns, so they are not drop-in pin-compatible replacements despite both being 8-lead dual op amps.
What is the supply voltage range for each device?
Both the AD8602 and AD8606 families are specified for single-supply operation from 2.7 V to 5.5 V, with dual-supply operation also supported. Designers should confirm the exact specified range in the current Analog Devices datasheet for the AD8602DRZ and AD8606AR before finalizing a design.
How do the input offset voltage specifications compare?
Both the AD8602 and AD8606 are precision CMOS amplifiers with low input offset voltage. The AD8606 is specified with a maximum input offset voltage of 65 µV, while the AD8602 is specified with a maximum input offset voltage of 500 µV. The AD8606 therefore offers tighter offset voltage grading than the AD8602.
How does the gain bandwidth product compare between the two parts?
The AD8602 is specified with a gain bandwidth product of 8 MHz, and the AD8606 is specified with a gain bandwidth product of 10 MHz. The AD8606 provides slightly higher bandwidth, which may matter in higher-frequency signal-conditioning applications.
What are the typical input voltage noise densities of these amplifiers?
The AD8602 is specified with a typical input voltage noise density of 33 nV/√Hz at 1 kHz, and the AD8606 is specified with a typical input voltage noise density of 8 nV/√Hz at 1 kHz. The AD8606 is therefore the lower-noise option of the two.
Can the AD8602DRZ be substituted with the AD8606AR in an existing design?
Not as a direct drop-in replacement. The two parts differ in package footprint (SOIC vs MSOP), input offset voltage, gain bandwidth, and noise performance. Any substitution requires verifying pinout, PCB land pattern, supply range, and all relevant AC/DC specifications against the Analog Devices datasheets for the target design.
What are the typical quiescent supply currents of the AD8602 and AD8606?
Both devices are specified with a typical quiescent supply current of approximately 750 µA per amplifier. Designers should confirm the exact supply current specification in the current Analog Devices datasheet for each part number before finalizing power budgets.