Part A
ADA4004-4ARZ
Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 4895 PCS
- Package
- SOIC-14
- Series
- Linear - Amplificadores - Instrumentação, OP Amps, Buffer Amps
Replacement verdict
Not a drop-in replacement
The ADA4001-2ARZ and ADA4004-4ARZ are not drop-in replacements for one another. The ADA4001-2ARZ is a dual-channel, low-noise JFET-input operational amplifier in an 8-lead SOIC package, while the ADA4004-4ARZ is a quad-channel, precision bipolar-input operational amplifier in a 14-lead SOIC package. The differing channel count, package footprint, input bias current characteristics, and supply current requirements mean the two devices are not functionally interchangeable in a common PCB layout without redesign.
Different channel count
Different package footprint
Different input bias current
Different supply current
Parts at a glance
Part B
ADA4001-2ARZ
Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 3781 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 | ADA4001-2ARZ | ADA4004-4ARZ | 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) | 1 mV | 125 µV | Lower offset voltage improves DC precision; the ADA4004 offers significantly better offset performance for high-accuracy signal chains. |
| Input Bias Current (Typ) | 1 pA | 40 nA | Very low bias current (JFET input) suits high-impedance sensors; the ADA4004's bipolar input draws more current, affecting high-source-impedance accuracy. |
| Gain Bandwidth Product | 10 MHz | 12 MHz | Sets the achievable closed-loop bandwidth and speed; higher GBW allows faster signal processing and wider bandwidth applications. |
| Slew Rate | 10 V/µs | 12 V/µs | Determines large-signal transient response and maximum frequency before slew limiting; affects distortion at high frequencies. |
| Input Voltage Noise Density | 16 nV/√Hz | 6 nV/√Hz | Lower voltage noise improves SNR in low-level signal amplification; the ADA4004 is notably quieter for precision low-noise designs. |
| Supply Voltage Range | ±5 V to ±15 V | ±5 V to ±15 V | Defines the allowable power supply rails; both support the same dual-supply range, enabling similar system power architectures. |
| Quiescent Current per Amplifier (Typ) | 1.5 mA | 1.7 mA | Affects total power consumption; lower per-amplifier current benefits battery-powered and thermally sensitive designs. |
| Package | 8-Lead SOIC | 14-Lead SOIC | Footprint and pin count differ, so PCB layout and board space must be redesigned when substituting between these parts. |
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 | ADA4004-4ARZ | ADA4001-2ARZ |
|---|---|---|
| Series | iPolar® | - |
| Part Status | Active | Active |
| Amplifier Type | General Purpose | J-FET |
| Number of Circuits | 4 | 2 |
| Slew Rate | 2.7V/µs | 25V/µs |
| Gain Bandwidth Product | 12 MHz | 16.7 MHz |
| Current - Input Bias | 40 nA | 20 pA |
| Voltage - Input Offset | 40 µV | 500 µV |
| Current - Output / Channel | 10 mA | 50 mA |
| Voltage - Supply Span(Min) | 10 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 |
| Output Type | - | Rail-to-Rail |
| -3 dB Bandwidth | - | 10.3 MHz |
| Supply Current | - | 2mA (x2 Channels) |
Frequently asked questions
What are the key differences between the ADA4001-2ARZ and ADA4004-4ARZ?
The ADA4001-2ARZ is a dual-channel operational amplifier in an 8-lead SOIC package, while the ADA4004-4ARZ is a quad-channel operational amplifier in a 14-lead SOIC package. Both are precision, low-noise, low-input-bias-current op amps from Analog Devices, but they differ in channel count, package size, and pin count.
Are the ADA4001-2ARZ and ADA4004-4ARZ pin-compatible?
No. The ADA4001-2ARZ uses an 8-lead SOIC package, and the ADA4004-4ARZ uses a 14-lead SOIC package. They have different pin counts and pinouts, so they are not drop-in replacements for each other.
What is the supply voltage range for these amplifiers?
Both the ADA4001-2ARZ and ADA4004-4ARZ are specified for operation from ±4 V to ±18 V dual supplies (or 8 V to 36 V single supply), per Analog Devices datasheets.
What are the input bias current and offset voltage characteristics of these parts?
Both devices are precision JFET-input op amps featuring very low input bias current (typically in the picoampere range) and low input offset voltage, making them suitable for high-impedance sensor and precision signal-conditioning applications. Consult the respective Analog Devices datasheets for exact guaranteed limits.
Can the ADA4001-2ARZ be used to replace the ADA4004-4ARZ in an existing design?
Not directly. The ADA4001-2ARZ provides only two channels versus four channels in the ADA4004-4ARZ, and the packages and pinouts differ. A replacement would require PCB redesign and validation against the target circuit requirements.
What are typical applications for the ADA4001-2ARZ and ADA4004-4ARZ?
Both are precision, low-noise op amps suited for instrumentation, active filters, photodiode and high-impedance sensor signal conditioning, and precision data acquisition. The dual ADA4001-2ARZ fits two-channel designs, while the quad ADA4004-4ARZ suits higher channel-density boards.
Do both parts operate over the same temperature range?
Both the ADA4001-2ARZ and ADA4004-4ARZ are specified for the industrial temperature range of −40 °C to +125 °C, per Analog Devices documentation.