Part A
ADA4001-2ARZ
Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 3781 Stückzahl
- Package
- SOIC-8
- Series
- Linear-Verstärker.Instrumentation, OP-Verstärker, Pufferverstärker
Replacement verdict
Compatible functional replacement candidate
The ADA4075-2ARZ and ADA4001-2ARZ are both dual low-noise operational amplifiers in the same 8-lead SOIC package, making the ADA4001-2ARZ a viable functional replacement candidate for the ADA4075-2ARZ in many designs. However, the two parts differ in supply voltage range, quiescent current, and input bias current, so the replacement should be validated against the target application's supply, power budget, and input impedance requirements before adoption.
Package Type
High match
Channel Count
High match
Supply Voltage Range
Validation required
Quiescent Current
Validation required
Parts at a glance
Part B
ADA4075-2ARZ
Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 1638 Stückzahl
- Package
- SOIC-8
- 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 | ADA4075-2ARZ | ADA4001-2ARZ | Why it matters |
|---|---|---|---|
| Number of Amplifiers | 2 | 2 | Both are dual op-amps, so channel count is compatible for direct substitution in dual-amplifier circuits. |
| Supply Voltage Range | ±4.5 V to ±18 V (9 V to 36 V total) | ±4 V to ±18 V (8 V to 36 V total) | Determines compatibility with the system power rails; the ADA4001-2 tolerates slightly lower minimum supply, allowing use in lower-voltage designs. |
| Input Offset Voltage (max) | 125 µV | 150 µV | Lower offset voltage reduces DC error in precision signal chains; the ADA4075-2 offers slightly better DC accuracy. |
| Input Bias Current (typ) | 1.5 nA | 1.5 nA | Low bias current minimizes errors in high-impedance sensor and feedback networks; both parts are equivalent here. |
| Gain Bandwidth Product | 6.5 MHz | 10 MHz | GBW sets the achievable closed-loop bandwidth; the ADA4001-2 supports wider-bandwidth signal processing. |
| Slew Rate | 2.5 V/µs | 3.5 V/µs | Higher slew rate enables faster large-signal response and lower distortion at high frequencies; the ADA4001-2 is faster. |
| Input Voltage Noise Density (1 kHz) | 11 nV/√Hz | 10 nV/√Hz | Lower voltage noise improves SNR in low-level signal amplification; the ADA4001-2 is marginally quieter. |
| Quiescent Current per Amplifier (typ) | 1.3 mA | 1.5 mA | Affects power budget in portable and battery-powered designs; the ADA4075-2 draws slightly less current. |
| Operating Temperature Range | -40 °C to +125 °C | -40 °C to +125 °C | Both cover the industrial temperature range, ensuring equivalent environmental robustness for substitution. |
| Package | 8-Lead SOIC | 8-Lead SOIC | Identical package and pinout allow drop-in board replacement 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 | ADA4001-2ARZ | ADA4075-2ARZ |
|---|---|---|
| Part Status | Active | Active |
| Amplifier Type | J-FET | General Purpose |
| Number of Circuits | 2 | 2 |
| Output Type | Rail-to-Rail | - |
| Slew Rate | 25V/µs | 12V/µs |
| Gain Bandwidth Product | 16.7 MHz | 6.5 MHz |
| -3 dB Bandwidth | 10.3 MHz | - |
| Current - Input Bias | 20 pA | 30 nA |
| Voltage - Input Offset | 500 µV | 200 µV |
| Supply Current | 2mA (x2 Channels) | 1.8mA (x2 Channels) |
| Current - Output / Channel | 50 mA | 40 mA |
| Voltage - Supply Span(Min) | 10 V | 9 V |
| Voltage - Supply Span(Max) | 36 V | 36 V |
| Operating Temperature | -40°C ~ 125°C | -40°C ~ 125°C |
| Mounting Type | Surface Mount | Surface Mount |
| Series | - | iPolar® |
Frequently asked questions
What are the primary differences between the ADA4075-2ARZ and ADA4001-2ARZ?
The ADA4075-2ARZ is a dual low-noise, low-power operational amplifier featuring a gain bandwidth product of 6.5 MHz and a typical voltage noise density of 2.8 nV/√Hz. The ADA4001-2ARZ is a dual precision operational amplifier with a gain bandwidth product of 10 MHz and a typical voltage noise density of 8 nV/√Hz. The ADA4075-2ARZ is optimized for low-noise signal conditioning, while the ADA4001-2ARZ is optimized for precision DC accuracy with lower offset voltage and drift.
Are the ADA4075-2ARZ and ADA4001-2ARZ pin-compatible?
Yes. Both devices are offered in the same 8-lead SOIC package (ARZ suffix) and share the standard dual operational amplifier pinout: pin 1 and pin 7 are outputs, pin 2 and pin 6 are inverting inputs, pin 3 and pin 5 are non-inverting inputs, and pin 4 and pin 8 are the negative and positive supply pins, respectively. This allows them to be used on the same PCB footprint, though electrical performance differences must be validated for the target design.
Which device offers lower input voltage noise, the ADA4075-2ARZ or the ADA4001-2ARZ?
The ADA4075-2ARZ offers lower input voltage noise. Its typical voltage noise density is 2.8 nV/√Hz at 1 kHz, compared with approximately 8 nV/√Hz at 1 kHz for the ADA4001-2ARZ. The ADA4075-2ARZ is therefore better suited to low-noise audio and sensor signal conditioning applications.
Which device provides better DC precision, the ADA4075-2ARZ or the ADA4001-2ARZ?
The ADA4001-2ARZ provides better DC precision. It features a typical input offset voltage of 75 µV with a maximum of 250 µV, and a typical offset voltage drift of 0.5 µV/°C. The ADA4075-2ARZ has a typical input offset voltage of 100 µV with a maximum of 500 µV. For precision DC instrumentation, the ADA4001-2ARZ is the more suitable choice.
What are the supply voltage and quiescent current specifications for these two amplifiers?
Both the ADA4075-2ARZ and ADA4001-2ARZ operate from a dual supply of ±4.5 V to ±18 V (9 V to 36 V total). The ADA4075-2ARZ has a typical quiescent current of 1.3 mA per amplifier, while the ADA4001-2ARZ has a typical quiescent current of 1.5 mA per amplifier. Both are unity-gain stable and specified over the −40 °C to +125 °C industrial temperature range.
Can the ADA4075-2ARZ and ADA4001-2ARZ be used interchangeably in an existing design?
They are pin-compatible in the 8-lead SOIC package, but they are not electrically identical. The ADA4075-2ARZ has lower voltage noise and lower quiescent current, while the ADA4001-2ARZ has higher gain bandwidth (10 MHz vs. 6.5 MHz) and better DC offset and drift performance. Substitution should only be made after verifying that noise, bandwidth, offset, drift, and stability requirements of the target circuit are met with the replacement device.
Which amplifier is better suited for low-noise audio or sensor front-end applications?
The ADA4075-2ARZ is better suited for low-noise front-end applications. Its 2.8 nV/√Hz voltage noise density and 6.5 MHz gain bandwidth support low-noise signal conditioning in audio and sensor interfaces. The ADA4001-2ARZ, with approximately 8 nV/√Hz noise density, is more appropriate where DC precision and low offset drift are the dominant requirements rather than minimum noise.