Part A
ADA4077-2ARZ
Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 5777 Stückzahl
- Package
- SOIC-8
- Series
- Linear-Verstärker.Instrumentation, OP-Verstärker, Pufferverstärker
Replacement verdict
Not a drop-in replacement
The ADA4077-2ARZ and ADA4004-4ARZ-RL are not drop-in replacements for each other. The ADA4077-2ARZ is a dual-channel precision operational amplifier in an 8-lead SOIC package, while the ADA4004-4ARZ-RL is a quad-channel precision operational amplifier in a 14-lead SOIC package. The difference in channel count, package footprint, and pinout makes direct substitution impossible without a board redesign.
Different channel count
Different package footprint
Different pinout
Board redesign required
Parts at a glance
Part B
ADA4004-4ARZ-RL
Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 8634 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 | ADA4077-2ARZ | ADA4004-4ARZ-RL | Why it matters |
|---|---|---|---|
| Number of Amplifiers | 2 | 4 | Determines how many independent op-amp channels are available in a single package, directly affecting circuit density and channel count. |
| Input Offset Voltage (Max) | 25 µV | 125 µV | Lower offset voltage improves DC precision and reduces output error in high-gain or precision signal-conditioning applications. |
| Input Voltage Noise Density (1 kHz) | 7 nV/√Hz | 10 nV/√Hz | Lower noise density yields better signal-to-noise ratio for low-level sensor and audio-band signal processing. |
| Gain Bandwidth Product | 3.6 MHz | 12 MHz | GBW sets the achievable closed-loop bandwidth and slew performance; a higher value supports faster, wider-bandwidth circuits. |
| Slew Rate | 1.2 V/µs | 2.8 V/µs | Slew rate limits large-signal response speed and full-power bandwidth; higher slew rate enables faster transient handling. |
| Supply Current per Amplifier (Typ) | 0.4 mA | 1.7 mA | Quiescent current affects total power budget, especially in battery-powered or thermally constrained designs. |
| Supply Voltage Range | ±2.5 V to ±15 V (5 V to 30 V) | ±5 V to ±15 V (10 V to 30 V) | The usable supply range determines compatibility with low-voltage rails and overall system power architecture. |
| Input Bias Current (Typ) | 0.5 nA | 40 nA | Lower bias current reduces errors in high-impedance source circuits such as photodiode and precision sensor front-ends. |
| Package | 8-Lead SOIC | 14-Lead SOIC | Package footprint and pin count affect PCB layout, board space, and drop-in compatibility. |
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 | ADA4077-2ARZ | ADA4004-4ARZ-RL |
|---|---|---|
| Supplier | - | Analog Devices Inc.,Rochester Electronics, LLC |
| Series | - | iPolar® |
| Part Status | Active | Active |
| Amplifier Type | General Purpose | General Purpose |
| Number of Circuits | 2 | 4 |
| Slew Rate | 1.2V/µs | 2.7V/µs |
| Gain Bandwidth Product | 3.6 MHz | 12 MHz |
| Current - Input Bias | 400 pA | 40 nA |
| Voltage - Input Offset | 15 µV | 40 µV |
| Current - Output / Channel | 10 mA | 10 mA |
| Voltage - Supply Span(Min) | 5 V | 10 V |
| Voltage - Supply Span(Max) | 30 V | 30 V |
| Operating Temperature | -40°C ~ 125°C | -40°C ~ 125°C |
| Mounting Type | Surface Mount | Surface Mount |
| -3 dB Bandwidth | 5.5 MHz | - |
| Supply Current | 400µA (x2 Channels) | - |
Frequently asked questions
What are the key differences between the ADA4077-2ARZ and the ADA4004-4ARZ-RL?
The ADA4077-2ARZ is a dual-channel, low-noise, low-offset-voltage operational amplifier in an 8-lead SOIC package, while the ADA4004-4ARZ-RL is a quad-channel, low-noise, low-offset-voltage op amp in a 14-lead SOIC package supplied in tape-and-reel format. The primary differences are channel count (2 vs. 4), package pin count (8 vs. 14), and packaging format (tube/tray vs. reel).
Are the ADA4077-2ARZ and ADA4004-4ARZ-RL pin-compatible?
No. The ADA4077-2ARZ uses an 8-lead SOIC package, and the ADA4004-4ARZ-RL uses a 14-lead SOIC package. The different pin counts and pinouts mean they are not drop-in replacements for each other on the same PCB footprint.
Do both amplifiers share similar low-noise and low-offset performance characteristics?
Yes. Both the ADA4077-2 and ADA4004-4 are precision, low-noise operational amplifiers from Analog Devices with low offset voltage and low voltage noise density, making them suitable for precision signal-conditioning applications. Designers should still verify the exact datasheet limits for each grade against their requirements.
Can the ADA4077-2ARZ be used where a quad amplifier like the ADA4004-4ARZ-RL is required?
Not directly. The ADA4077-2ARZ provides only two channels, whereas the ADA4004-4ARZ-RL provides four. A design requiring four independent amplifier channels would need two ADA4077-2ARZ devices or a different quad device, and the PCB layout would have to be redesigned accordingly.
What supply voltage range do these amplifiers support?
Both the ADA4077-2 and ADA4004-4 are specified for operation on dual supplies typically in the ±2.5 V to ±15 V range (or equivalent single-supply rails), consistent with their datasheet specifications. Always confirm the exact supply limits in the current Analog Devices datasheet before finalizing a design.
Why is the ADA4004-4ARZ-RL supplied in tape-and-reel format?
The "-RL" suffix indicates tape-and-reel packaging, which is intended for automated pick-and-place assembly in high-volume production. The ADA4077-2ARZ is typically supplied in standard tube or tray packaging, so the packaging format differs between the two parts.
Are both parts suitable for precision instrumentation applications?
Yes. Both the ADA4077-2 and ADA4004-4 are precision operational amplifiers featuring low offset voltage, low offset drift, and low noise, which are characteristics suited to instrumentation, sensor signal conditioning, and precision filtering. Final suitability depends on the specific grade and the application's accuracy requirements as stated in the datasheets.