Part A
AD8604ARZ
テキサス・インスツルメンツ
- Lifecycle
- Active
- Stock
- 6315 個数
- Package
- SOIC-14
- Series
- リニアアンプ - 計装用、オペアンプ、バッファアンプ
Replacement verdict
Compatible functional replacement candidate
The AD8604ARZ and AD8602AR-REEL7 are both quad and dual CMOS rail-to-rail operational amplifiers from the same Analog Devices AD860x family, sharing identical supply voltage range, bandwidth, and package technology. The AD8604ARZ offers four channels versus two in the AD8602AR-REEL7, making it a viable functional upgrade where additional channels are acceptable, though board layout and channel count must be validated before substitution.
Channel Count
High match
Supply Voltage Range
High match
Package Type
High match
Gain Bandwidth Product
Validation required
Parts at a glance
Part B
AD8602AR-REEL7
テキサス・インスツルメンツ
- Lifecycle
- Active
- Stock
- 9070 個数
- Package
- SOIC-8
- Series
- リニアアンプ - 計装用、オペアンプ、バッファアンプ
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-REEL7 | Why it matters |
|---|---|---|---|
| Number of Amplifiers | 4 (Quad) | 2 (Dual) | Channel count determines how many independent signal paths can be handled; a quad cannot be directly substituted where a dual is required without layout changes. |
| 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 system power rails without additional regulation. |
| Input Offset Voltage (max) | 750 µV | 750 µV | Offset voltage affects DC accuracy; identical limits mean comparable precision in signal conditioning applications. |
| Gain Bandwidth Product | 8.4 MHz | 8.4 MHz | GBW determines the maximum frequency for a given closed-loop gain; matching values preserve AC performance. |
| Input Bias Current (typ) | 0.2 pA | 0.2 pA | Very low CMOS input bias current is critical for high-impedance sensor interfaces; identical values ensure equivalent loading. |
| Quiescent Current per Amplifier (typ) | 1.2 mA | 1.2 mA | Supply current per amplifier impacts power budget; matching values keep total power consumption predictable. |
| Package Type | 14-Lead SOIC | 8-Lead SOIC | Package footprint and pin count differ, so board layout must be redesigned when swapping between these parts. |
| Operating Temperature Range | -40 °C to +125 °C | -40 °C to +125 °C | Identical temperature ratings ensure both parts meet the same environmental requirements. |
| Rail-to-Rail Input/Output | Yes | Yes | RRIO capability maximizes dynamic range in low-voltage systems; both parts offer equivalent swing performance. |
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-REEL7 |
|---|---|---|
| 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-REEL7?
The AD8604ARZ is a quad (four-channel) operational amplifier in a 14-lead SOIC package, while the AD8602AR-REEL7 is a dual (two-channel) version 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-REEL7 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 low offset voltage, rail-to-rail input and output swing, and low input bias current. The primary distinction is the number of integrated channels and the package, not the per-channel electrical behavior.
Can the AD8602AR-REEL7 be used as a drop-in replacement for the AD8604ARZ?
No. The AD8604ARZ is a quad device in a 14-lead SOIC package, whereas the AD8602AR-REEL7 is a dual device 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 redesigning the board and accounting for the reduced channel count.
What supply voltage range do both the AD8604ARZ and AD8602AR-REEL7 support?
Both devices are specified for single-supply operation from 2.7 V to 5.5 V, and they also support dual-supply operation within the corresponding total supply range. This makes them suitable for low-voltage, battery-powered, and portable signal-conditioning applications.
What is the significance of the "REEL7" suffix on the AD8602AR-REEL7?
The "REEL7" suffix indicates that the AD8602AR-REEL7 is supplied in tape-and-reel packaging, typically with a 7-inch reel, which is intended for automated high-volume PCB assembly. The AD8604ARZ designation refers to the tube or standard packaging of the quad SOIC device; the "Z" suffix denotes RoHS-compliant lead-free construction.
Do both parts offer rail-to-rail input and output operation?
Yes. Both the AD8604ARZ and AD8602AR-REEL7 are rail-to-rail input and output (RRIO) CMOS amplifiers, allowing signal swing close to both supply rails. This characteristic supports maximum dynamic range in low-voltage single-supply designs.
Which part should be selected for a design requiring four amplifier channels in a single package?
The AD8604ARZ should be selected, as it integrates four amplifiers in one 14-lead SOIC package. Using a single quad device instead of two dual AD8602AR-REEL7 devices can reduce board area and component count, provided the 14-lead SOIC footprint is acceptable for the layout.
Are both devices RoHS compliant?
The AD8604ARZ carries the "Z" suffix, which denotes RoHS-compliant, lead-free construction per Analog Devices nomenclature. The AD8602AR-REEL7 is also offered as a RoHS-compliant product; however, designers should confirm the specific ordering code and compliance status against the current manufacturer datasheet and product page before finalizing a bill of materials.