Part A
ADA4077-2ARZ
Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 5777 PCS
- Package
- SOIC-8
- Series
- Linear - Amplificadores - Instrumentação, OP Amps, Buffer Amps
Replacement verdict
Compatible functional replacement candidate
The ADA4001-2ARZ-RL is a viable functional replacement candidate for the ADA4077-2ARZ in many dual op-amp applications, sharing the same SOIC-8 package and dual-channel topology. However, the two devices differ in their input voltage noise density and gain-bandwidth product, so the ADA4001-2ARZ-RL should be validated against the noise and bandwidth requirements of the target circuit before substitution.
Package Type
High match
Channel Count
High match
Input Voltage Noise Density
Validation required
Gain-Bandwidth Product
Validation required
Parts at a glance
Part B
ADA4001-2ARZ-RL
Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 6269 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 | ADA4077-2ARZ | ADA4001-2ARZ-RL | Why it matters |
|---|---|---|---|
| Number of Amplifiers | 2 | 2 | Both are dual op-amps, so channel count is compatible for direct substitution in dual-channel circuits. |
| Input Offset Voltage (Max) | 25 µV | 1 mV | Lower offset voltage improves DC precision; the ADA4077-2ARZ is significantly more precise, which matters in high-accuracy signal chains. |
| Input Bias Current (Typ) | 0.5 nA | 25 nA | Lower bias current reduces errors in high-impedance sensor and feedback networks, favoring the ADA4077-2ARZ. |
| Gain Bandwidth Product | 3.6 MHz | 10 MHz | GBW determines achievable closed-loop bandwidth; the ADA4001-2ARZ-RL supports wider-bandwidth signals. |
| Slew Rate | 1.2 V/µs | 5 V/µs | Higher slew rate allows faster large-signal response; the ADA4001-2ARZ-RL is better for dynamic signals. |
| Input Voltage Noise Density | 7 nV/√Hz | 16 nV/√Hz | Lower voltage noise improves SNR in low-level signal amplification; the ADA4077-2ARZ is quieter. |
| Supply Voltage Range | ±2.5 V to ±15 V | ±4.5 V to ±18 V | Operating supply range affects compatibility with system rails; the ADA4001-2ARZ-RL tolerates higher supply voltages. |
| Quiescent Current per Amplifier (Typ) | 0.4 mA | 1.5 mA | Lower quiescent current reduces power consumption; the ADA4077-2ARZ is preferable for power-sensitive designs. |
| Package | 8-Lead SOIC | 8-Lead SOIC | Identical package and pinout enable drop-in board-level substitution without layout changes. |
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 | ADA4001-2ARZ-RL |
|---|---|---|
| Supplier | - | Analog Devices Inc. |
| Part Status | Active | Active |
| Amplifier Type | General Purpose | J-FET |
| Number of Circuits | 2 | 2 |
| Output Type | - | Rail-to-Rail |
| Slew Rate | 1.2V/µs | 25V/µs |
| Gain Bandwidth Product | 3.6 MHz | 16.7 MHz |
| -3 dB Bandwidth | 5.5 MHz | 10.3 MHz |
| Current - Input Bias | 400 pA | 20 pA |
| Voltage - Input Offset | 15 µV | 500 µV |
| Supply Current | 400µA (x2 Channels) | 2mA (x2 Channels) |
| Current - Output / Channel | 10 mA | 50 mA |
| Voltage - Supply Span(Min) | 5 V | 10 V |
| Voltage - Supply Span(Max) | 30 V | 36 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 ADA4077-2ARZ and the ADA4001-2ARZ-RL?
The ADA4077-2ARZ is a dual, low-noise, low-offset-voltage operational amplifier from Analog Devices, while the ADA4001-2ARZ-RL is a dual, low-power, rail-to-rail output op amp from the same manufacturer. The ADA4077-2ARZ is optimized for precision and low noise, whereas the ADA4001-2ARZ-RL is optimized for low supply current and rail-to-rail output swing. They differ in input bias current, noise density, supply current, and output swing characteristics, so they are not drop-in equivalents.
Are the ADA4077-2ARZ and ADA4001-2ARZ-RL pin-compatible?
Both devices are offered in an 8-lead SOIC package (the "ARZ" suffix denotes SOIC), and both use the standard dual op amp pinout. However, pin compatibility alone does not guarantee electrical compatibility; the surrounding circuit must be validated against each device's datasheet specifications before substitution.
Which device has lower input offset voltage?
The ADA4077-2ARZ is specified with a maximum input offset voltage of 25 µV, making it a precision-grade amplifier. The ADA4001-2ARZ-RL has a higher specified offset voltage. For applications requiring tight DC precision, the ADA4077-2ARZ is the appropriate choice based on datasheet limits.
How do the supply current requirements compare?
The ADA4001-2ARZ-RL is designed for low-power operation and draws significantly less supply current per amplifier than the ADA4077-2ARZ. The ADA4077-2ARZ trades higher supply current for lower noise and lower offset voltage. Designs with strict power budgets should favor the ADA4001-2ARZ-RL, while precision signal-chain designs may favor the ADA4077-2ARZ.
Which device offers rail-to-rail output swing?
The ADA4001-2ARZ-RL features rail-to-rail output swing, allowing the output to approach both supply rails. The ADA4077-2ARZ does not have a rail-to-rail output stage; its output swing is limited relative to the supply rails. This makes the ADA4001-2ARZ-RL better suited to low-voltage, single-supply designs requiring maximum dynamic range.
How does voltage noise compare between the two amplifiers?
The ADA4077-2ARZ is specified with a low voltage noise density of approximately 7 nV/√Hz at 1 kHz, making it suitable for low-noise signal conditioning. The ADA4001-2ARZ-RL has higher voltage noise density. For applications sensitive to noise, such as precision instrumentation and audio, the ADA4077-2ARZ is the preferred option.
Can the ADA4001-2ARZ-RL replace the ADA4077-2ARZ in an existing precision design?
Not without revalidation. The two devices differ in input offset voltage, noise, supply current, and output swing. A substitution may be acceptable in non-critical, low-power circuits, but precision DC and low-noise applications should verify offset, drift, and noise performance against the ADA4001-2ARZ-RL datasheet before replacing the ADA4077-2ARZ.
What are the typical applications for each device?
The ADA4077-2ARZ is typically used in precision instrumentation, low-noise sensor signal conditioning, and active filtering where offset and noise are critical. The ADA4001-2ARZ-RL is typically used in portable, battery-powered, and single-supply systems where low quiescent current and rail-to-rail output swing are important. Selection should be based on the dominant design constraint: precision versus power.