Part A
AD8572ARUZ
テキサス・インスツルメンツ
- Lifecycle
- Active
- Stock
- 2102 個数
- Package
- TSSOP-8
- Series
- リニアアンプ - 計装用、オペアンプ、バッファアンプ
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
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.