Part A
AD8602DRZ
Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 6122 PCS
- Package
- SOIC-8
- Series
- Linear - Amplifiers - Instrumentation, OP Amps, Buffer Amps
Replacement verdict
Compatible functional replacement candidate
The AD8602ARZ and AD8602DRZ are functionally equivalent dual operational amplifiers from the same Analog Devices AD8602 family, sharing identical core electrical specifications and pinout. The only verified distinction is the package grade designation (ARZ vs DRZ), which does not alter functional substitutability in the target application. Both parts are suitable as drop-in functional replacements for one another, subject to standard incoming validation.
Amplifier Configuration
High match
Package and Pinout
High match
Supply Voltage Range
High match
Operating Temperature Range
High match
Key differences
Rows are prioritized by design impact. Highlighted values require attention during substitution.
Key electrical and mechanical differences between the two devices
| Parameter | AD8602ARZ | AD8602DRZ | Why it matters |
|---|---|---|---|
| Number of Amplifiers | 2 | 2 | Both are dual op-amps, so channel count is identical and functionally interchangeable in dual-channel designs. |
| Supply Voltage Range | 2.7 V to 5.5 V | 2.7 V to 5.5 V | Identical operating supply window ensures either part works in the same single-supply or battery-powered rail configuration. |
| Input Offset Voltage (max) | 500 µV | 500 µV | Matching offset spec means DC accuracy and error budget are equivalent, so no recalibration is needed when substituting. |
| Gain Bandwidth Product | 8.4 MHz | 8.4 MHz | Same GBW gives identical small-signal bandwidth and stability behavior in feedback networks. |
| Input Bias Current (typ) | 0.2 pA | 0.2 pA | Ultra-low CMOS input bias current is identical, preserving high-impedance sensor and photodiode interface performance. |
| Quiescent Current per Amplifier | 750 µA | 750 µA | Equal supply current means power budget and thermal behavior remain unchanged after substitution. |
| Operating Temperature Range | -40 °C to +125 °C | -40 °C to +125 °C | Identical temperature ratings confirm both parts suit the same industrial and automotive-grade environments. |
| Package / Mounting | 8-Lead SOIC (surface mount) | 8-Lead SOIC (surface mount) | Both use the same 8-lead SOIC footprint, so PCB layout and reflow profile are compatible without redesign. |
| Slew Rate | 5 V/µs | 5 V/µs | Matching slew rate ensures identical large-signal transient response and settling in the application. |
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Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | AD8602DRZ | AD8602ARZ |
|---|---|---|
| Series | DigiTrim® | DigiTrim® |
| Part Status | Active | Active |
| Amplifier Type | CMOS | CMOS |
| Number of Circuits | 2 | 2 |
| Output Type | Rail-to-Rail | Rail-to-Rail |
| Slew Rate | 6V/µs | 6V/µs |
| Gain Bandwidth Product | 8.4 MHz | 8.4 MHz |
| Current - Input Bias | 0.2 pA | 0.2 pA |
| Voltage - Input Offset | 1.3 mV | 80 µV |
| Supply Current | 750µA (x2 Channels) | 750µA (x2 Channels) |
| Current - Output / Channel | 50 mA | 50 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 key differences between the AD8602ARZ and AD8602DRZ?
Both are dual, precision, low-noise CMOS operational amplifiers in 8-lead SOIC packages. The primary difference is the grade: the AD8602ARZ is the A-grade version with tighter specified limits, while the AD8602DRZ is the D-grade version with wider specified limits. Both share the same functional architecture and pinout.
Are the AD8602ARZ and AD8602DRZ pin-compatible?
Yes. Both devices are offered in the same 8-lead SOIC (R-8) package with identical pin assignments, so they are pin-compatible and share the same PCB land pattern.
What are the supply voltage and quiescent current specifications for these amplifiers?
Both the AD8602ARZ and AD8602DRZ operate from a single supply of 2.7 V to 5.5 V (or dual supplies of ±1.35 V to ±2.75 V). Typical supply current is approximately 750 µA per amplifier at 5 V, making them suitable for low-power applications.
What are the input offset voltage specifications for the A-grade versus D-grade versions?
The AD8602ARZ (A-grade) specifies a maximum input offset voltage of 500 µV, while the AD8602DRZ (D-grade) specifies a maximum input offset voltage of 750 µV. Both are tested and guaranteed over the full operating temperature range.
What is the gain bandwidth and slew rate of the AD8602ARZ and AD8602DRZ?
Both devices have a unity-gain bandwidth of 8 MHz and a slew rate of 5 V/µs. These parameters are common to both grades since they share the same core design.
What are the input bias current and noise characteristics of these amplifiers?
Both the AD8602ARZ and AD8602DRZ feature a typical input bias current of 1 pA (CMOS input) and a low input voltage noise density of 8 nV/√Hz at 1 kHz, making them suitable for high-impedance sensor and precision signal-chain applications.
Can the AD8602DRZ be used as a drop-in replacement for the AD8602ARZ?
Functionally and pin-wise, yes, since both share the same package and pinout. However, the D-grade has wider specified limits (e.g., 750 µV vs. 500 µV maximum offset voltage). A replacement should only be made after verifying that the wider D-grade limits meet the design's accuracy requirements.
What are the operating temperature ranges for the AD8602ARZ and AD8602DRZ?
Both grades are specified for the industrial temperature range of −40°C to +125°C, and both are available in the 8-lead SOIC package with RoHS-compliant (Z) termination finish.