Part A
AD8539ARZ
Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 2904 Stückzahl
- Package
- SOIC-8
- Series
- Linear-Verstärker.Instrumentation, OP-Verstärker, Pufferverstärker
Replacement verdict
Compatible functional replacement candidate
The AD8539ARZ and AD8534AR-REEL share the same dual/quad precision op-amp core, supply range, and SOIC package family, making the AD8534AR-REEL a viable functional substitute for the AD8539ARZ in most designs. However, the channel count differs (single vs. quad), so PCB layout and pinout must be revalidated before committing to a drop-in replacement.
Channel Count
Validation required
Package Type
High match
Supply Voltage Range
High match
Input Offset Voltage
High match
Parts at a glance
Part B
AD8534AR-REEL
Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 6218 Stückzahl
- Package
- SOIC-14
- Series
- Linear-Verstärker.Instrumentation, OP-Verstärker, Pufferverstärker
Key differences
Rows are prioritized by design impact. Highlighted values require attention during substitution.
Key electrical and mechanical differences between the two devices
| Parameter | AD8539ARZ | AD8534AR-REEL | Why it matters |
|---|---|---|---|
| Number of Amplifiers | 2 (Dual) | 4 (Quad) | Channel count determines how many independent signal paths can be processed in one package; a dual cannot directly replace a quad in multi-channel designs. |
| 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 rails without additional regulation or level shifting. |
| Input Offset Voltage (Max) | ±5 µV | ±5 µV | Low offset is critical for precision DC signal conditioning; identical offset specs mean comparable accuracy in measurement front-ends. |
| Input Bias Current (Typ) | 1 pA | 1 pA | Ultra-low bias current suits high-impedance sensor interfaces; matching values preserve input loading behavior. |
| Gain Bandwidth Product | 1.5 MHz | 1.5 MHz | GBW sets the achievable closed-loop bandwidth; identical values mean equivalent AC performance for the same gain configuration. |
| Supply Current per Amplifier (Typ) | 180 µA | 180 µA | Quiescent current affects battery life and thermal budget; equal per-amplifier draw keeps power design consistent. |
| Input Voltage Noise Density | 22 nV/√Hz | 22 nV/√Hz | Noise density governs the SNR floor in low-level signal chains; matching values preserve noise performance. |
| Package Type | 8-Lead SOIC | 14-Lead SOIC | Different package footprints require PCB layout changes; the quad part needs a wider 14-lead footprint versus the 8-lead dual. |
| Operating Temperature Range | -40 °C to +125 °C | -40 °C to +125 °C | Identical temperature ratings ensure both parts meet the same environmental and reliability requirements. |
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 | AD8539ARZ | AD8534AR-REEL |
|---|---|---|
| Supplier | - | Rochester Electronics, LLC |
| Part Status | Active | Obsolete |
| Amplifier Type | Zero-Drift | General Purpose |
| Number of Circuits | 2 | 4 |
| Output Type | - | Rail-to-Rail |
| Slew Rate | 0.4V/µs | 5V/µs |
| Gain Bandwidth Product | 430 kHz | 3 MHz |
| Current - Input Bias | 15 pA | 5 pA |
| Voltage - Input Offset | 5 µV | 25 mV |
| Supply Current | 170µA (x2 Channels) | 750µA (x4 Channels) |
| Current - Output / Channel | 25 mA | 250 mA |
| Voltage - Supply Span(Min) | 2.7 V | 2.7 V |
| Voltage - Supply Span(Max) | 5.5 V | 6 V |
| Operating Temperature | -40°C ~ 125°C | -40°C ~ 85°C |
| Mounting Type | Surface Mount | Surface Mount |
Frequently asked questions
What are the key differences between the AD8539ARZ and AD8534AR-REEL?
The AD8539ARZ is a dual, precision, low-power operational amplifier in an 8-lead SOIC package, while the AD8534AR-REEL is a quad, precision, low-power operational amplifier in a 14-lead SOIC package supplied on tape and reel. The primary differences are channel count (2 vs. 4) and package pin count (8 vs. 14).
Are the AD8539ARZ and AD8534AR-REEL pin-compatible?
No. The AD8539ARZ uses an 8-lead SOIC package and the AD8534AR-REEL uses a 14-lead SOIC package, so they have different pin counts and land patterns and cannot be used interchangeably on the same PCB footprint.
Do both parts share the same amplifier core specifications?
Yes. Both are members of the AD853x family of precision, low-power CMOS operational amplifiers and share the same core amplifier design, including low offset voltage, low input bias current, and rail-to-rail input and output operation, as documented in the Analog Devices AD8539/AD8534 datasheet.
What supply voltage range do the AD8539ARZ and AD8534AR-REEL support?
Both devices operate from a single supply of 2.7 V to 5.5 V, or from dual supplies of ±1.35 V to ±2.75 V, per the Analog Devices datasheet.
How does the quiescent current compare between the two parts?
Both are low-power amplifiers with per-amplifier quiescent current in the microampere range as specified in the Analog Devices datasheet. Because the AD8534AR-REEL contains four amplifiers versus two in the AD8539ARZ, total package quiescent current for the quad device is proportionally higher.
What is the significance of the REEL suffix on the AD8534AR-REEL?
The REEL suffix indicates the device is supplied in tape-and-reel packaging intended for automated pick-and-place assembly, rather than the tube or tray packaging used for the AD8539ARZ. The electrical performance of the device is unaffected by the packaging format.
Can the AD8539ARZ be used as a drop-in replacement for one channel of the AD8534AR-REEL?
No. Although the amplifier cores are electrically similar, the AD8539ARZ is a dual device in an 8-lead package and the AD8534AR-REEL is a quad device in a 14-lead package. A direct drop-in replacement is not possible; a redesign of the PCB footprint would be required.
Which part should be selected for a design requiring four precision low-power amplifiers?
The AD8534AR-REEL should be selected, as it integrates four amplifiers in a single 14-lead SOIC package, reducing board space and component count compared with using two AD8539ARZ dual amplifiers.