Part A
ADA4530-1ARZ
Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 3596 PCS
- Package
- SOIC-8
- Series
- Linear - Amplificadores - Instrumentação, OP Amps, Buffer Amps
Replacement verdict
Compatible functional replacement candidate
The ADA4530-1ARZ-R7 and ADA4530-1ARZ are functionally identical femtoampere input bias current operational amplifiers from the same manufacturer, differing only in packaging format (tape-and-reel versus tube). Both share the same die, electrical specifications, and SOIC-8 footprint, making them interchangeable for design and qualification purposes; the choice between them is driven solely by assembly and inventory handling requirements.
Amplifier Core Specifications
High match
Package and Footprint
High match
Operating Temperature Range
High match
Packaging Format
Validation required
Parts at a glance
Part B
ADA4530-1ARZ-R7
Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 5200 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 | ADA4530-1ARZ-R7 | ADA4530-1ARZ | Why it matters |
|---|---|---|---|
| Amplifier Type | Electrometer / Femtoampere Input Bias Current Amplifier | Electrometer / Femtoampere Input Bias Current Amplifier | Confirms both parts are the same core amplifier type, so functional behavior is equivalent. |
| Number of Channels | 1 | 1 | Channel count must match for direct substitution in single-channel circuit designs. |
| Input Bias Current (Typical) | ±1 fA (at 25°C) | ±1 fA (at 25°C) | Ultra-low input bias current is the defining feature for electrometer and high-impedance sensor applications. |
| Input Offset Voltage (Max) | ±50 µV | ±50 µV | Offset voltage directly affects DC accuracy in precision measurement circuits. |
| Supply Voltage Range | 4.5 V to 16 V (±2.25 V to ±8 V) | 4.5 V to 16 V (±2.25 V to ±8 V) | Supply range must be compatible with the target system rails for the part to operate correctly. |
| Gain Bandwidth Product | 2 MHz | 2 MHz | GBW determines the achievable closed-loop bandwidth and dynamic response of the amplifier. |
| Package / Mounting | 8-Lead SOIC (Surface Mount) | 8-Lead SOIC (Surface Mount) | Identical package and mounting ensure drop-in PCB compatibility. |
| Packaging / Ordering Format | Tape & Reel (R7, 750 units per reel) | Tube / Tray (bulk) | The only difference is the shipping format; reel packaging suits automated assembly, while tube suits prototyping or low-volume use. |
| Operating Temperature Range | −40°C to +125°C | −40°C to +125°C | Matching temperature ratings ensure equivalent performance across the application's environmental range. |
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 | ADA4530-1ARZ | ADA4530-1ARZ-R7 |
|---|---|---|
| Part Status | Active | Active |
| Amplifier Type | General Purpose | General Purpose |
| Number of Circuits | 1 | 1 |
| Output Type | Rail-to-Rail | Rail-to-Rail |
| Slew Rate | 1.4V/µs | 1.4V/µs |
| Gain Bandwidth Product | 2 MHz | 2 MHz |
| -3 dB Bandwidth | 5.5 MHz | 5.5 MHz |
| Current - Input Bias | 0.02 pA | 0.02 pA |
| Voltage - Input Offset | 8 µV | 8 µV |
| Supply Current | 900µA | 900µA |
| Current - Output / Channel | 15 mA | 15 mA |
| Voltage - Supply Span(Min) | 4.5 V | 4.5 V |
| Voltage - Supply Span(Max) | 16 V | 16 V |
| Operating Temperature | -40°C ~ 125°C | -40°C ~ 125°C |
| Mounting Type | Surface Mount | Surface Mount |
Frequently asked questions
What is the difference between ADA4530-1ARZ-R7 and ADA4530-1ARZ?
Both parts are the same ADA4530-1 femtoampere-level input bias current operational amplifier in an 8-lead SOIC package. The difference is packaging format: ADA4530-1ARZ-R7 is supplied in 7-inch reel packaging (typically 750 units per reel), while ADA4530-1ARZ is supplied in tube packaging. The electrical specifications and die are identical.
Are ADA4530-1ARZ-R7 and ADA4530-1ARZ electrically identical?
Yes. Both orderable part numbers share the same datasheet specifications, including ultra-low input bias current (typically 20 fA at 25°C), low offset voltage, and the same operating voltage range. The suffix difference denotes reel versus tube shipping format, not device performance.
Can ADA4530-1ARZ-R7 be used as a drop-in replacement for ADA4530-1ARZ?
Yes, from an electrical and footprint standpoint the devices are the same 8-lead SOIC (R-8) package and are interchangeable on a PCB. The only practical consideration is assembly: R7 reel packaging suits automated pick-and-place production, while tube packaging suits low-volume or manual handling.
What package do ADA4530-1ARZ-R7 and ADA4530-1ARZ use?
Both are offered in the 8-lead SOIC package (R-8 suffix in the Analog Devices ordering code). The "ARZ" designation indicates the SOIC package with RoHS-compliant construction.
Which part number should be ordered for automated SMT production?
ADA4530-1ARZ-R7 is the reel-packaged option and is intended for automated surface-mount assembly lines. ADA4530-1ARZ in tubes is generally preferred for prototyping, low-volume builds, or manual placement.
Do ADA4530-1ARZ-R7 and ADA4530-1ARZ differ in temperature range or qualification?
No. Both orderable part numbers correspond to the same device specification and are rated for the industrial temperature range stated in the Analog Devices datasheet. Packaging format does not alter the temperature rating or qualification status.
Is the moisture sensitivity level the same for both orderable part numbers?
Yes. Because both are the same 8-lead SOIC body and construction, the moisture sensitivity level classification applies equally to ADA4530-1ARZ-R7 and ADA4530-1ARZ. Refer to the Analog Devices datasheet and packaging information for the specific MSL rating before reflow.