Part A
ADA4075-2ARZ
テキサス・インスツルメンツ
- Lifecycle
- Active
- Stock
- 1638 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
Replacement verdict
Compatible functional replacement candidate
The ADA4075-2ARZ and ADA4000-2ARZ-RL are both dual low-noise, low-power operational amplifiers in the same 8-lead SOIC package with identical pinout, making them a viable functional replacement candidate. However, the ADA4000-2ARZ-RL offers a higher gain-bandwidth product and slew rate, so designers should validate AC performance, stability, and supply current against the target application before substituting.
Package Type
High match
Pin Configuration
High match
Gain Bandwidth Product
Validation required
Supply Current
Validation required
Parts at a glance
Part B
ADA4000-2ARZ-RL
テキサス・インスツルメンツ
- Lifecycle
- Active
- Stock
- 8826 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 | ADA4075-2ARZ | ADA4000-2ARZ-RL | Why it matters |
|---|---|---|---|
| Number of Amplifiers | 2 | 2 | Both are dual op-amps, so channel count is compatible for direct substitution in dual-amplifier circuits. |
| Gain Bandwidth Product (GBP) | 6.5 MHz | 5 MHz | GBP determines the maximum usable frequency for a given closed-loop gain; a lower GBP limits high-frequency performance. |
| Input Offset Voltage (Max) | 125 µV | 200 µV | Lower offset voltage improves DC accuracy, which is critical in precision signal-conditioning applications. |
| Input Voltage Noise Density | 2.8 nV/√Hz | 16 nV/√Hz | Lower voltage noise yields better signal-to-noise ratio in low-level audio and sensor front-ends. |
| Supply Current per Amplifier (Typ) | 0.9 mA | 3.5 mA | Quiescent current affects power budget and thermal load, especially in battery-powered or dense designs. |
| Slew Rate | 2.5 V/µs | 20 V/µs | Slew rate limits large-signal bandwidth and transient response; a much higher slew rate supports faster, larger swings. |
| Supply Voltage Range | ±4.5 V to ±18 V | ±4 V to ±18 V | The usable supply range determines compatibility with the system rail voltages and headroom requirements. |
| Input Bias Current (Typ) | 1 nA | 5 pA | Lower bias current reduces errors in high-impedance and precision DC circuits. |
| Package | 8-Lead SOIC | 8-Lead SOIC | Matching package and pinout enables drop-in board-level 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 | ADA4075-2ARZ | ADA4000-2ARZ-RL |
|---|---|---|
| Supplier | - | Analog Devices Inc.,Rochester Electronics, LLC |
| Part Status | Active | Active |
| Amplifier Type | General Purpose | J-FET |
| Number of Circuits | 2 | 2 |
| Slew Rate | 12V/µs | 20V/µs |
| Gain Bandwidth Product | 6.5 MHz | 5 MHz |
| Current - Input Bias | 30 nA | 5 pA |
| Voltage - Input Offset | 200 µV | 200 µV |
| Supply Current | 1.8mA (x2 Channels) | 1.35mA (x2 Channels) |
| Current - Output / Channel | 40 mA | 28 mA |
| Voltage - Supply Span(Min) | 9 V | 8 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 key differences between the ADA4075-2ARZ and the ADA4000-2ARZ-RL?
The ADA4075-2ARZ is a dual low-noise, low-power operational amplifier with a gain bandwidth product of 6.5 MHz and a typical voltage noise density of 2.8 nV/√Hz. The ADA4000-2ARZ-RL is a dual JFET-input operational amplifier with a gain bandwidth product of 5 MHz and a typical voltage noise density of 16 nV/√Hz. The ADA4075-2 is optimized for low-noise, low-power signal conditioning, while the ADA4000-2 is optimized for high input impedance and low input bias current JFET applications.
Are the ADA4075-2ARZ and ADA4000-2ARZ-RL pin-compatible?
Both devices are offered in an 8-lead SOIC package (the "RZ" suffix indicates SOIC). However, pin compatibility must be confirmed against the respective manufacturer datasheets, because input bias current, input impedance, and supply requirements differ between the bipolar-input ADA4075-2 and the JFET-input ADA4000-2. Do not assume direct substitution without verifying the pinout and circuit requirements.
Which device has lower input bias current, the ADA4075-2ARZ or the ADA4000-2ARZ-RL?
The ADA4000-2ARZ-RL, with its JFET input stage, has significantly lower input bias current than the bipolar-input ADA4075-2ARZ. The ADA4000-2 is specified with input bias current in the picoampere range, making it preferable for high-impedance sensor and photodiode applications, whereas the ADA4075-2 has higher input bias current typical of bipolar input amplifiers.
Which device offers lower voltage noise for precision signal conditioning?
The ADA4075-2ARZ offers lower voltage noise density, typically around 2.8 nV/√Hz, compared with approximately 16 nV/√Hz for the ADA4000-2ARZ-RL. For low-noise audio and precision instrumentation front ends, the ADA4075-2 is generally the better choice, while the ADA4000-2 is better suited where high input impedance and low bias current dominate.
What are the supply voltage and quiescent current characteristics of these two amplifiers?
Both the ADA4075-2ARZ and ADA4000-2ARZ-RL operate from dual supplies typically in the ±4 V to ±15 V range (or equivalent single-supply configurations within the datasheet limits). The ADA4075-2 is a low-power amplifier with quiescent current typically around 1 mA per amplifier, while the ADA4000-2 has higher quiescent current. Always confirm exact supply limits and current consumption from the official manufacturer datasheets before design.
Can the ADA4000-2ARZ-RL be used as a drop-in replacement for the ADA4075-2ARZ?
Not without validation. Although both are dual op-amps in 8-lead SOIC packages, they differ in input stage topology (JFET versus bipolar), input bias current, voltage noise, and quiescent current. A drop-in replacement requires verifying pinout, supply range, stability, and AC/DC performance against the target circuit and the manufacturer datasheets.
Which device is better suited for high-impedance sensor interfaces?
The ADA4000-2ARZ-RL is generally better suited for high-impedance sensor interfaces because its JFET input stage provides very low input bias current and high input impedance. The ADA4075-2ARZ, with bipolar inputs, is better suited for low-noise, low-power signal chains where source impedance is moderate and voltage noise is the dominant concern.