Part A
AD8552AR
Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 4828 PCS
- Package
- SOIC-8
- Series
- Linear - Amplifiers - Instrumentation, OP Amps, Buffer Amps
Replacement verdict
Compatible functional replacement candidate
The AD8552ARZ and AD8552AR are functionally equivalent zero-drift operational amplifiers from the same manufacturer, sharing identical core electrical specifications and pinout. The AD8552ARZ is the RoHS-compliant, lead-free package variant of the AD8552AR, making it a suitable drop-in replacement in most applications where lead-free compliance is required or acceptable.
Amplifier Architecture
High match
Package and Pinout
High match
Supply Voltage Range
High match
RoHS Compliance
Validation required
Key differences
Rows are prioritized by design impact. Highlighted values require attention during substitution.
Key electrical and mechanical differences between the two devices
| Parameter | AD8552ARZ | AD8552AR | Why it matters |
|---|---|---|---|
| Number of Amplifiers | 2 | 2 | Both are dual op-amps, so channel count matches for direct circuit substitution. |
| Supply Voltage Range | 2.7 V to 5.5 V | 2.7 V to 5.5 V | Identical operating supply range ensures compatibility with the same power rails. |
| Input Offset Voltage (Max) | 5 µV | 5 µV | Zero-drift chopper architecture gives both parts the same ultra-low offset, critical for precision sensing. |
| Input Bias Current (Typ) | 50 pA | 50 pA | Very low bias current suits high-impedance sensor interfaces; identical for both parts. |
| Gain Bandwidth Product | 1.5 MHz | 1.5 MHz | Same bandwidth means identical AC response and stability behavior in the application. |
| Operating Temperature Range | -40 °C to +125 °C | -40 °C to +125 °C | Matching temperature ratings allow use in the same environmental conditions. |
| Package / Mounting | 8-Lead SOIC (Pb-free, RoHS-compliant) | 8-Lead SOIC (standard, leaded) | The Z suffix denotes the RoHS-compliant Pb-free version; the non-Z part is the leaded variant, which matters for compliance and solder process requirements. |
| RoHS Compliance | Yes (Pb-free) | No (contains lead) | RoHS status affects regulatory compliance and is the primary functional difference between these two orderable part numbers. |
| Supply Current per Amplifier (Typ) | 850 µA | 850 µA | Identical quiescent current keeps power budget unchanged when substituting 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 | AD8552AR | AD8552ARZ |
|---|---|---|
| Part Status | Obsolete | Active |
| Amplifier Type | Zero-Drift | Zero-Drift |
| Number of Circuits | 2 | 2 |
| Output Type | Rail-to-Rail | Rail-to-Rail |
| Slew Rate | 0.4V/µs | 0.4V/µs |
| Gain Bandwidth Product | 1.5 MHz | 1.5 MHz |
| Current - Input Bias | 10 pA | 10 pA |
| Voltage - Input Offset | 1 µV | 1 µV |
| Supply Current | 850µA (x2 Channels) | 850µA (x2 Channels) |
| Current - Output / Channel | 30 mA | 30 mA |
| Voltage - Supply Span(Min) | 2.7 V | 2.7 V |
| Voltage - Supply Span(Max) | 5 V | 5 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 the AD8552ARZ and the AD8552AR?
Both are dual-channel zero-drift operational amplifiers from Analog Devices in an 8-lead SOIC package. The AD8552ARZ is the RoHS-compliant, lead-free (Pb-free) version, while the AD8552AR is the older non-RoHS leaded (Pb) version. The electrical specifications are otherwise the same.
Are the AD8552ARZ and AD8552AR electrically identical?
Yes. Both parts share the same datasheet specifications, including a typical offset voltage of 1 µV, rail-to-rail input and output, a gain bandwidth of 1.5 MHz, and a supply range of 2.7 V to 5.5 V. The only documented difference is the package finish and RoHS compliance status.
Can the AD8552ARZ be used as a drop-in replacement for the AD8552AR?
Yes, in most cases. Both are 8-lead SOIC devices with identical pinouts and electrical performance, so the AD8552ARZ can replace the AD8552AR on an existing PCB. The substitution should still be validated against the design's soldering process and compliance requirements.
Is the AD8552AR still available for purchase?
The AD8552AR is the legacy non-RoHS version and is generally not recommended for new designs. Availability depends on distributor stock and Analog Devices' lifecycle status; the AD8552ARZ is the actively recommended RoHS-compliant variant.
What package do the AD8552ARZ and AD8552AR use?
Both devices are supplied in an 8-lead SOIC package (often designated SOIC_N or R-8). The package outline and pin assignments are identical between the two versions.
Do the AD8552ARZ and AD8552AR differ in operating temperature range?
No. Both are specified over the standard industrial temperature range of −40 °C to +125 °C, as documented in the Analog Devices AD8552/AD8551 datasheet.
Which version should be selected for a new RoHS-compliant design?
The AD8552ARZ should be selected. It is the Pb-free, RoHS-compliant variant, whereas the AD8552AR contains lead and may not satisfy RoHS or lead-free assembly requirements.