Part A
AD8534AR
テキサス・インスツルメンツ
- Lifecycle
- Active
- Stock
- 6062 個数
- Package
- SOP-14
- 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 AD8532ARZ and AD8534AR are both single-supply, rail-to-rail CMOS operational amplifiers from the same Analog Devices AD853x family, sharing identical per-channel electrical characteristics, supply range, and package family. The AD8534AR integrates four amplifiers in a 14-lead SOIC versus the dual AD8532ARZ in an 8-lead SOIC, so it is a functional replacement candidate only where the additional channels and larger footprint are acceptable; designers must confirm channel count, board space, and pinout before substituting.
Amplifier Type and Per-Channel Specifications
High match
Supply Voltage Range
High match
Channel Count
Not compatible
Package and Pinout
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 | AD8532ARZ | AD8534AR | Why it matters |
|---|---|---|---|
| Number of Amplifiers | 2 | 4 | Determines how many independent op-amp channels are available in the package; a dual cannot directly replace a quad in circuits requiring four channels. |
| Package / Case | 8-Lead SOIC (SOIC-8) | 14-Lead SOIC (SOIC-14) | Footprint and pin count must match the PCB layout; different packages are not drop-in compatible. |
| Supply Voltage Range | 2.7 V to 6 V | 2.7 V to 6 V | Defines the operating supply window; matching ranges ensure the part works in the same power rail conditions. |
| Gain Bandwidth Product | 3 MHz | 3 MHz | Sets the achievable closed-loop bandwidth; identical GBW means similar AC performance for signal conditioning. |
| Slew Rate | 5 V/µs | 5 V/µs | Governs large-signal transient response; matching slew rate preserves dynamic behavior in the application. |
| Input Offset Voltage (max) | 25 mV | 25 mV | Affects DC accuracy; equal offset specs mean comparable precision in DC-coupled circuits. |
| Input Bias Current | 1 pA (typ) | 1 pA (typ) | Low bias current minimizes errors in high-impedance nodes; matching values preserve input impedance behavior. |
| Output Current per Channel | 250 mA | 250 mA | Determines drive capability for loads; identical output current supports the same load driving requirements. |
| Operating Temperature Range | -40 °C to +85 °C | -40 °C to +85 °C | Confirms both parts are rated for the same environmental conditions in the target application. |
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 | AD8534AR | AD8532ARZ |
|---|---|---|
| Part Status | Obsolete | Active |
| Amplifier Type | General Purpose | General Purpose |
| Number of Circuits | 4 | 2 |
| Output Type | Rail-to-Rail | Rail-to-Rail |
| Slew Rate | 5V/µs | 5V/µs |
| Gain Bandwidth Product | 3 MHz | 3 MHz |
| Current - Input Bias | 5 pA | 5 pA |
| Voltage - Input Offset | 25 mV | 25 mV |
| Supply Current | 750µA (x4 Channels) | 750µA (x2 Channels) |
| Current - Output / Channel | 250 mA | 250 mA |
| Voltage - Supply Span(Min) | 2.7 V | 2.7 V |
| Voltage - Supply Span(Max) | 6 V | 6 V |
| Operating Temperature | -40°C ~ 85°C | -40°C ~ 85°C |
| Mounting Type | Surface Mount | Surface Mount |
Frequently asked questions
What are the key differences between the AD8532ARZ and AD8534AR?
The AD8532ARZ is a dual (2-channel) operational amplifier in an 8-lead SOIC package, while the AD8534AR is a quad (4-channel) operational amplifier in a 14-lead SOIC package. Both are single-supply, rail-to-rail input/output CMOS amplifiers from Analog Devices with similar per-channel performance, but they differ in channel count and package pin count.
Are the AD8532ARZ and AD8534AR electrically identical on a per-channel basis?
Yes. Both devices share the same core amplifier design and are specified with the same typical performance per channel, including a 3 MHz gain bandwidth product, 5 V/µs slew rate, and rail-to-rail input and output swing. The primary distinction is the number of integrated channels and the package footprint.
What supply voltage range do the AD8532ARZ and AD8534AR support?
Both amplifiers operate from a single supply of 2.7 V to 6 V, and they can also be operated from dual supplies within that total range. This makes them suitable for low-voltage, single-supply systems such as portable and battery-powered designs.
Can the AD8534AR be used as a drop-in replacement for the AD8532ARZ?
No. The AD8534AR is a quad amplifier in a 14-lead SOIC package, whereas the AD8532ARZ is a dual amplifier in an 8-lead SOIC package. The pin counts, pin functions, and PCB land patterns differ, so a direct drop-in substitution is not possible without redesigning the board layout.
What are the input and output characteristics of these amplifiers?
Both the AD8532ARZ and AD8534AR feature rail-to-rail input and output capability, allowing signal swing close to both supply rails. They are CMOS input devices with low input bias current, making them suitable for high-impedance sensor interfaces and low-power signal conditioning.
What are typical applications for the AD8532ARZ and AD8534AR?
These rail-to-rail CMOS amplifiers are commonly used in portable instrumentation, battery-powered devices, sensor signal conditioning, active filters, and general-purpose low-voltage analog circuits. The dual AD8532ARZ suits compact two-channel designs, while the quad AD8534AR suits multi-channel systems where board space and channel density matter.
Do the AD8532ARZ and AD8534AR have the same package type?
Both are offered in SOIC packages, but with different pin counts: the AD8532ARZ uses an 8-lead SOIC (commonly designated R-8) and the AD8534AR uses a 14-lead SOIC (commonly designated R-14). Designers must account for the different footprint and pinout when selecting between them.