Part A
AD8512ARZ
Analog Equipment GmbH.
- Lifecycle
- Active
- Stock
- 2506 PCS
- Package
- SOIC-8
- Series
- Amplificateurs linéaires - instruments, amplificateurs opérationnels, amplificateurs tampons
Replacement verdict
Compatible functional replacement candidate
The AD8512ARZ and AD8512AR are functionally equivalent dual precision JFET-input operational amplifiers sharing identical core electrical specifications, pinout, and package family. The AD8512ARZ is the RoHS-compliant, lead-free version of the AD8512AR, making it a direct drop-in replacement in most designs, with the primary distinction being environmental compliance and solder process compatibility rather than electrical performance.
Amplifier Specifications
High match
Package and Pinout
High match
RoHS Compliance
Validation required
Operating Temperature Range
High match
Parts at a glance
Part B
AD8512AR
Analog Equipment GmbH.
- Lifecycle
- Active
- Stock
- 8090 PCS
- Package
- SOIC-8
- Series
- Amplificateurs linéaires - instruments, amplificateurs opérationnels, amplificateurs tampons
Key differences
Rows are prioritized by design impact. Highlighted values require attention during substitution.
Key electrical and mechanical differences between the two devices
| Parameter | AD8512ARZ | AD8512AR | Why it matters |
|---|---|---|---|
| Amplifier Type | JFET Input, Dual Operational Amplifier | JFET Input, Dual Operational Amplifier | Confirms both parts are the same core amplifier type, so they are functionally interchangeable in circuit design. |
| Number of Channels | 2 | 2 | Both are dual op-amps, so package pinout and channel count match for direct substitution. |
| Supply Voltage Range | ±4.5 V to ±18 V (dual supply) | ±4.5 V to ±18 V (dual supply) | Identical supply range ensures the replacement works in the same power environment without redesign. |
| Gain Bandwidth Product | 8 MHz | 8 MHz | Matching bandwidth guarantees equivalent AC performance and stability in the target application. |
| Input Offset Voltage (max) | 0.8 mV | 0.8 mV | Same offset voltage spec means DC accuracy is preserved when swapping parts. |
| Input Bias Current | 25 pA (typ) | 25 pA (typ) | Low JFET input bias current is critical for high-impedance sensor and precision circuits; identical values ensure equivalent behavior. |
| Slew Rate | 20 V/µs | 20 V/µs | Equal slew rate maintains large-signal transient response and avoids distortion differences. |
| Package / Mounting | 8-Lead SOIC (surface mount) | 8-Lead SOIC (surface mount) | Same package and footprint allow drop-in board replacement without layout changes. |
| RoHS / Lead-Free Status | RoHS compliant, lead-free (Z suffix) | Non-RoHS, contains lead (no Z suffix) | The "Z" suffix denotes lead-free/RoHS compliance; this is the key difference affecting regulatory compliance and solder process compatibility. |
| Operating Temperature Range | -40 °C to +125 °C | -40 °C to +125 °C | Identical temperature ratings ensure both parts meet the same environmental requirements. |
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 | AD8512ARZ | AD8512AR |
|---|---|---|
| Supplier | - | Analog Devices Inc. |
| Part Status | Active | Obsolete |
| Amplifier Type | J-FET | J-FET |
| Number of Circuits | 2 | 2 |
| Slew Rate | 20V/µs | 20V/µs |
| Gain Bandwidth Product | 8 MHz | 8 MHz |
| Current - Input Bias | 25 pA | 25 pA |
| Voltage - Input Offset | 100 µV | 100 µV |
| Supply Current | 2.2mA (x2 Channels) | 2.2mA (x2 Channels) |
| Current - Output / Channel | 70 mA | 70 mA |
| Voltage - Supply Span(Min) | 10 V | 10 V |
| Voltage - Supply Span(Max) | 30 V | 30 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 AD8512ARZ and AD8512AR?
The AD8512ARZ and AD8512AR are both dual precision JFET-input operational amplifiers from Analog Devices. The primary difference is the package and ordering suffix: the AD8512ARZ is supplied in a lead-free, RoHS-compliant 8-lead SOIC (Small Outline Integrated Circuit) package, while the AD8512AR is the older non-RoHS version of the same 8-lead SOIC package. The electrical specifications of the two devices are identical.
Are the AD8512ARZ and AD8512AR electrically identical?
Yes. Both parts share the same datasheet specifications, including low offset voltage, low input bias current, low noise, and high slew rate. The AD8512ARZ is simply the RoHS-compliant ordering variant of the AD8512AR, so the electrical performance is the same.
Can the AD8512ARZ be used as a direct replacement for the AD8512AR?
Yes, in most cases. Because both devices are the same die in the same 8-lead SOIC package with identical pinout and electrical specifications, the AD8512ARZ can directly replace the AD8512AR. The only difference is the RoHS-compliant lead finish, which does not affect circuit performance.
Is the AD8512ARZ RoHS compliant?
Yes. The "Z" suffix in the AD8512ARZ part number indicates a lead-free, RoHS-compliant package. The AD8512AR, without the Z suffix, is the non-RoHS version and should not be used in designs requiring RoHS compliance.
What package do the AD8512ARZ and AD8512AR use?
Both devices are offered in an 8-lead SOIC package. The pinout is identical between the two variants, allowing the same PCB land pattern to be used for either part.
What are the key specifications of the AD8512ARZ and AD8512AR?
Both are dual JFET-input operational amplifiers featuring low offset voltage, low input bias current, low voltage noise, and high slew rate, making them suitable for precision analog signal processing. For exact guaranteed limits, refer to the Analog Devices AD8512 datasheet.
Which part should be selected for a new design, AD8512ARZ or AD8512AR?
For new designs, the AD8512ARZ is generally preferred because it is the RoHS-compliant variant and is the actively recommended ordering option. The AD8512AR is the legacy non-RoHS version and may have limited availability.