Part A
AD8604ARZ
Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 6315 PCS
- Package
- SOIC-14
- Series
- Linear - Amplificadores - Instrumentação, OP Amps, Buffer Amps
Replacement verdict
Compatible functional replacement candidate
The AD8604ARZ and AD8602AR-REEL share the same core amplifier architecture, supply range, and SOIC-8 footprint, making the AD8604ARZ a viable functional substitute for the AD8602AR-REEL in most designs. The primary distinction is the channel count, which must be validated against the target application's signal requirements before substitution.
Channel Count
Validation required
Package Type
High match
Supply Voltage Range
High match
Amplifier Architecture
High match
Parts at a glance
Part B
AD8602AR-REEL
Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 6192 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 | AD8604ARZ | AD8602AR-REEL | Why it matters |
|---|---|---|---|
| Number of Amplifiers | 4 (Quad) | 2 (Dual) | Determines how many independent op-amp channels are available in a single package, directly affecting circuit density and channel count. |
| Supply Voltage Range | 2.7 V to 5.5 V | 2.7 V to 5.5 V | Defines the operating supply window; matching ranges allow the parts to be used in the same low-voltage single-supply systems. |
| Gain Bandwidth Product | 8.4 MHz | 8.4 MHz | Sets the frequency range over which the amplifier provides useful gain, critical for signal bandwidth and stability. |
| Input Offset Voltage (Max) | 750 µV | 750 µV | Low offset voltage reduces DC error in precision signal chains; identical values indicate comparable accuracy. |
| Input Bias Current | 1 pA (typ) | 1 pA (typ) | Very low bias current suits high-impedance sensor interfaces; matching values mean equivalent input loading behavior. |
| Quiescent Current per Amplifier | 1.2 mA (typ) | 1.2 mA (typ) | Affects power budget in battery-powered designs; equal per-amplifier current means similar efficiency per channel. |
| Package Type | 14-Lead SOIC | 8-Lead SOIC | Footprint and pin count differ, so board layout and assembly must be adapted even though the electrical characteristics match. |
| Operating Temperature Range | -40 °C to +125 °C | -40 °C to +125 °C | Confirms both parts are rated for industrial/extended temperature environments, supporting interchangeable use in harsh conditions. |
| Slew Rate | 5 V/µs | 5 V/µs | Governs large-signal dynamic response; identical slew rate ensures comparable transient performance in both parts. |
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 | AD8604ARZ | AD8602AR-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 | 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 | 80 µV | 80 µV |
| Supply Current | 750µA (x4 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 AD8604ARZ and AD8602AR-REEL?
The AD8604ARZ is a quad-channel operational amplifier in a 14-lead SOIC package, while the AD8602AR-REEL is a dual-channel operational amplifier in an 8-lead SOIC package supplied on tape and reel. Both are rail-to-rail input/output CMOS amplifiers from Analog Devices with similar per-channel performance, but they differ in channel count, package pinout, and packaging format.
Are the AD8604ARZ and AD8602AR-REEL electrically identical on a per-channel basis?
Yes. Both devices share the same core amplifier design and are specified with comparable per-channel parameters, including a typical gain bandwidth product of 8.4 MHz, a typical slew rate of 5 V/µs, and rail-to-rail input and output operation. The primary distinction is the number of integrated channels and the package.
Can the AD8602AR-REEL be used as a drop-in replacement for the AD8604ARZ?
No. The AD8604ARZ is a quad amplifier in a 14-lead SOIC package, whereas the AD8602AR-REEL is a dual amplifier in an 8-lead SOIC package. The pin counts, pin functions, and PCB land patterns differ, so a direct drop-in substitution is not possible without a board redesign.
What supply voltage range do the AD8604ARZ and AD8602AR-REEL support?
Both devices operate from a single supply of 2.7 V to 5.5 V, and they can also be operated from dual supplies within the same total range. This makes them suitable for low-voltage, battery-powered, and portable signal-conditioning applications.
What is the significance of the "REEL" suffix on the AD8602AR-REEL?
The "REEL" suffix indicates that the AD8602AR-REEL is supplied in tape-and-reel packaging intended for automated pick-and-place assembly. The AD8604ARZ designation refers to the tube or tray-style packaging of the quad device in the RoHS-compliant SOIC package.
Do both parts share the same input and output characteristics?
Yes. Both the AD8604ARZ and AD8602AR-REEL feature rail-to-rail input and output swing, low input bias current, and low offset voltage typical of the AD860x family. These characteristics make them suitable for precision sensor interfaces, active filtering, and buffering applications.
Which part should be selected for a design requiring four independent amplifier channels?
The AD8604ARZ should be selected, as it integrates four operational amplifiers in a single 14-lead SOIC package. Using one quad device instead of two dual AD8602AR-REEL devices reduces board space and component count while maintaining comparable per-channel performance.