Part A
AD8608ARUZ
Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 3744 PCS
- Package
- TSSOP-14
- Series
- Linear - Amplificadores - Instrumentação, OP Amps, Buffer Amps
Replacement verdict
Compatible functional replacement candidate
The AD8608ARUZ and AD8602DRM-REEL share the same CMOS op-amp core, supply range, and pinout, making the AD8608ARUZ a viable functional replacement candidate for the AD8602DRM-REEL in most designs, provided the tighter offset voltage, lower noise, and higher bandwidth of the AD8608ARUZ are acceptable and the package footprint change from MSOP-8 to TSSOP-8 is accommodated on the PCB.
Amplifier Type
High match
Supply Voltage Range
High match
Package Type
Validation required
Pin Configuration
High match
Parts at a glance
Part B
AD8602DRM-REEL
Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 8665 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 | AD8608ARUZ | AD8602DRM-REEL | Why it matters |
|---|---|---|---|
| Number of Amplifiers | 4 (Quad) | 2 (Dual) | Channel count determines how many independent signal paths can be processed; a quad and a dual are not directly interchangeable in multi-channel designs. |
| Package / Mounting Type | 14-Lead TSSOP (Surface Mount) | 8-Lead MSOP (Surface Mount) | Footprint and pin count must match the PCB layout; different packages require board redesign and cannot be drop-in substituted. |
| Input Offset Voltage (Max) | 65 µV | 500 µV | Lower offset voltage improves DC accuracy; the AD8608 offers tighter precision than the AD8602, affecting error budgets in precision signal chains. |
| Gain Bandwidth Product | 10 MHz | 8.4 MHz | GBW sets the achievable closed-loop bandwidth and settling behavior; similar values allow comparable AC performance in filtering and buffering. |
| Supply Voltage Range | 2.7 V to 5.5 V | 2.7 V to 5.5 V | Matching supply ranges ensure both parts operate in the same single-supply systems without level shifting or regulation changes. |
| Input Bias Current (Typ) | 0.2 pA | 0.2 pA | Ultra-low CMOS input bias current minimizes errors in high-impedance sensor and photodiode interfaces; identical values mean equivalent performance here. |
| Supply Current per Amplifier (Typ) | 1.2 mA | 1.2 mA | Quiescent current drives power budget in portable designs; equal per-amplifier current means comparable efficiency per channel. |
| Rail-to-Rail Input/Output | Yes (RRIO) | Yes (RRIO) | Rail-to-rail swing maximizes dynamic range on low supply voltages; both parts share this capability, supporting similar signal headroom. |
| 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 environments without derating differences. |
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Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | AD8608ARUZ | AD8602DRM-REEL |
|---|---|---|
| Supplier | - | Analog Devices Inc.,Rochester Electronics, LLC |
| Series | DigiTrim® | DigiTrim® |
| Part Status | Active | Obsolete |
| Amplifier Type | CMOS | CMOS |
| Number of Circuits | 4 | 2 |
| Output Type | Rail-to-Rail | Rail-to-Rail |
| Slew Rate | 5V/µs | 6V/µs |
| Gain Bandwidth Product | 10 MHz | 8.4 MHz |
| Current - Input Bias | 1 pA | 0.2 pA |
| Voltage - Input Offset | 80 µV | 1.3 mV |
| Supply Current | 1mA (x4 Channels) | 750µA (x2 Channels) |
| Current - Output / Channel | 80 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 AD8608ARUZ and AD8602DRM-REEL?
The AD8608ARUZ is a quad-channel, 10 MHz CMOS operational amplifier in a 14-lead TSSOP package, while the AD8602DRM-REEL is a dual-channel, 8 MHz CMOS operational amplifier in an 8-lead MSOP package supplied on tape and reel. The AD8608 offers four amplifiers per package with slightly higher bandwidth, whereas the AD8602 provides two amplifiers in a smaller footprint.
Are the AD8608ARUZ and AD8602DRM-REEL pin-compatible?
No. The AD8608ARUZ uses a 14-lead TSSOP package and the AD8602DRM-REEL uses an 8-lead MSOP package. They differ in pin count, package dimensions, and PCB land pattern, so they are not drop-in replacements for each other.
What are the supply voltage ranges for these two amplifiers?
Both the AD8608 and AD8602 are specified for single-supply operation from 2.7 V to 5.5 V, and also support dual-supply operation. Designers should confirm the exact supply range against the respective manufacturer datasheets for the operating conditions of their application.
How do the bandwidth specifications compare between the AD8608ARUZ and AD8602DRM-REEL?
The AD8608ARUZ has a gain bandwidth product of 10 MHz, while the AD8602DRM-REEL has a gain bandwidth product of 8 MHz. The AD8608 therefore provides higher small-signal bandwidth, which may matter in higher-frequency signal conditioning applications.
Can the AD8602DRM-REEL be used as a substitute for the AD8608ARUZ in an existing design?
Not directly. The AD8602DRM-REEL provides only two amplifiers versus four in the AD8608ARUZ, and the packages differ (8-lead MSOP versus 14-lead TSSOP). Substitution would require a redesign of the PCB layout and verification of channel count, bandwidth, and other parameters against the target application.
What input offset voltage performance do these amplifiers offer?
Both the AD8608 and AD8602 are precision CMOS operational amplifiers with low input offset voltage. The exact offset voltage limits should be verified from the official manufacturer datasheets for the specific grade and test conditions, as these parameters are specified over defined operating ranges.
What are the typical applications for the AD8608ARUZ and AD8602DRM-REEL?
Both parts are general-purpose precision CMOS amplifiers suited to sensor signal conditioning, active filtering, photodiode amplification, and portable instrumentation. The AD8608ARUZ is advantageous where four channels are needed in one package, while the AD8602DRM-REEL suits space-constrained dual-channel designs.
Do both parts support rail-to-rail input and output operation?
Yes. The AD8608 and AD8602 are rail-to-rail input and output CMOS operational amplifiers, allowing signal swing close to both supply rails. Designers should still verify input common-mode and output swing limits against the datasheet for the specific load and supply conditions.