Part A
AD8572ARUZ
Analog Equipment GmbH.
- Lifecycle
- Active
- Stock
- 2102 PCS
- Package
- TSSOP-8
- Series
- Amplificateurs linéaires - instruments, amplificateurs opérationnels, amplificateurs tampons
Replacement verdict
Compatible functional replacement candidate
The AD8572ARUZ and AD8572ARU are functionally equivalent zero-drift operational amplifiers sharing the same core specifications, with the ARUZ suffix denoting RoHS-compliant packaging. The AD8572ARUZ is a suitable functional replacement candidate for the AD8572ARU in most applications, though PCB assembly processes should be validated for lead-free compatibility.
Amplifier Type
High match
Package Type
High match
Pin Configuration
High match
RoHS Compliance
Validation required
Parts at a glance
Part B
AD8572ARU
Analog Equipment GmbH.
- Lifecycle
- Active
- Stock
- 5606 PCS
- Package
- TSSOP-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 | AD8572ARUZ | AD8572ARU | Why it matters |
|---|---|---|---|
| Number of Amplifiers | 2 | 2 | Dual channel count must match for the circuit topology to remain compatible. |
| Supply Voltage Range | 2.7 V to 5.5 V | 2.7 V to 5.5 V | The operating supply window determines compatibility with the system power rail. |
| Input Offset Voltage (Max) | 5 µV | 5 µV | Low offset is critical for precision DC signal accuracy in the application. |
| Gain Bandwidth Product | 1.5 MHz | 1.5 MHz | Bandwidth sets the achievable closed-loop speed and signal fidelity. |
| Input Bias Current | 50 pA | 50 pA | Very low bias current supports high-impedance sensor and precision interfaces. |
| Operating Temperature Range | -40 °C to +125 °C | -40 °C to +125 °C | Temperature range must cover the target environment for reliable operation. |
| Package / Mounting | 8-Lead TSSOP (RU-8), Surface Mount | 8-Lead TSSOP (RU-8), Surface Mount | Package and footprint must match for board-level drop-in compatibility. |
| RoHS / Lead-Free Status | RoHS Compliant, Lead-Free | Non-RoHS (contains lead) | Compliance status affects regulatory acceptance and solder process requirements. |
| Output Current per Channel | ±30 mA | ±30 mA | Drive capability determines the load the amplifier can support directly. |
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 | AD8572ARUZ | AD8572ARU |
|---|---|---|
| Supplier | - | Rochester Electronics, LLC |
| Part Status | Active | Obsolete |
| 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 | 160 pA | 160 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 AD8572ARUZ and AD8572ARU?
The AD8572ARUZ is the RoHS-compliant, lead-free (Pb-free) version of the AD8572ARU. Both are dual zero-drift operational amplifiers in a TSSOP-8 package from Analog Devices, but the AD8572ARU is the non-RoHS legacy ordering code, while the AD8572ARUZ is the current RoHS-compliant ordering code.
Are AD8572ARUZ and AD8572ARU functionally interchangeable?
Yes. Both parts share the same die, electrical specifications, and TSSOP-8 pinout. The only difference is the RoHS/lead-free compliance status of the package finish, so they are functionally interchangeable in circuit design.
What are the key specifications of the AD8572?
The AD8572 is a dual zero-drift, rail-to-rail input/output operational amplifier with very low offset voltage (typically 1 µV), low offset drift (typically 0.005 µV/°C), low input bias current, and a gain bandwidth product of 1.5 MHz. It operates from a single supply of 2.7 V to 5 V (or dual supplies) and is specified over the −40 °C to +125 °C temperature range.
What package do AD8572ARUZ and AD8572ARU use?
Both parts are supplied in an 8-lead TSSOP (Thin Shrink Small Outline Package), designated by the "RU" suffix in the ordering code. The "Z" suffix on AD8572ARUZ indicates RoHS compliance and lead-free construction.
Does the "Z" suffix affect electrical performance?
No. The "Z" suffix denotes RoHS compliance and lead-free (Pb-free) termination finish only. It does not change the electrical parameters, die, or functional behavior of the device compared with the non-Z AD8572ARU.
Which part should be selected for a new RoHS-compliant design?
The AD8572ARUZ should be selected for new designs requiring RoHS compliance, as it is the lead-free, RoHS-compliant ordering code. The AD8572ARU is the legacy non-RoHS code and is generally not recommended for new RoHS-restricted designs.
Can AD8572ARUZ directly replace AD8572ARU on an existing PCB?
Yes, from a footprint and pinout perspective. Both use the same 8-lead TSSOP package with identical pin assignments, so the AD8572ARUZ can be placed on a board designed for the AD8572ARU without layout changes, provided the assembly process supports lead-free (higher reflow temperature) soldering.