Part A
AD8552AR
Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 4828 Stückzahl
- Package
- SOIC-8
- Series
- Linear-Verstärker.Instrumentation, OP-Verstärker, Pufferverstärker
Replacement verdict
Compatible functional replacement candidate
The AD8555ARZ-REEL is not a direct drop-in substitute for the AD8552AR: both are zero-drift, rail-to-rail operational amplifiers in the same 8-lead SOIC package, but the AD8555 is a digitally programmable sensor amplifier with a different pinout and function set. Designers must validate pin configuration, supply range, and programmable-gain behavior before substituting in an existing AD8552AR socket.
Package Type
Validation required
Supply Voltage Range
Validation required
Pin Configuration
Not compatible
Amplifier Function
Not compatible
Parts at a glance
Part B
AD8555ARZ-REEL
Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 8026 Stückzahl
- Package
- SOIC-8
- Series
- Linear-Verstärker.Instrumentation, OP-Verstärker, Pufferverstärker
Key differences
Rows are prioritized by design impact. Highlighted values require attention during substitution.
Key electrical and mechanical differences between the two devices
| Parameter | AD8552AR | AD8555ARZ-REEL | Why it matters |
|---|---|---|---|
| Number of Amplifiers | 2 (dual) | 1 (single, with programmable gain) | Determines channel count; a dual op-amp cannot directly replace a single programmable-gain amplifier in a one-channel signal chain without redesign. |
| Amplifier Type / Architecture | Zero-drift, rail-to-rail input/output operational amplifier | Zero-drift, digitally programmable gain instrumentation amplifier | The AD8555 integrates programmable gain and trimming, so it is not a drop-in functional substitute for a fixed-gain op-amp like the AD8552. |
| Gain Configuration | Fixed by external resistors (user-set) | Digitally programmable gain (pin/OTP programmable) | Programmable gain allows in-system calibration and range selection, a key functional difference affecting substitutability. |
| Input Offset Voltage (max) | ~5 µV (typical zero-drift spec) | ~10 µV (programmable, trimmed) | Offset voltage directly impacts DC accuracy; both are very low, but exact limits differ and must be checked against the precision requirement. |
| Supply Voltage Range | 2.7 V to 5.5 V (single supply) | 2.7 V to 5.5 V (single supply) | Compatible supply ranges ease substitution in low-voltage systems, though the surrounding circuitry must still match. |
| Package | 8-lead SOIC | 16-lead SOIC | Different package and pin count prevent direct board-level drop-in replacement; PCB layout must be redesigned. |
| Programmable Features | None (fixed op-amp) | Programmable gain, output offset, and OTP trimming | The AD8555 offers digital programmability that the AD8552 lacks, making them functionally non-equivalent for calibrated sensor interfaces. |
| Typical Application | General precision signal conditioning, sensor amplification | Programmable-gain sensor signal conditioning with digital calibration | Application fit differs; the AD8555 targets systems needing in-system gain/offset calibration, while the AD8552 is a general-purpose precision op-amp. |
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 | AD8555ARZ-REEL |
|---|---|---|
| Supplier | - | Analog Devices Inc. |
| Series | - | DigiTrim® |
| Part Status | Obsolete | Obsolete |
| Amplifier Type | Zero-Drift | Zero-Drift |
| Number of Circuits | 2 | 1 |
| Slew Rate | 0.4V/µs | 1.2V/µs |
| Gain Bandwidth Product | 1.5 MHz | 2 MHz |
| Current - Input Bias | 10 pA | 16 nA |
| Voltage - Input Offset | 1 µV | 2 µV |
| Supply Current | 850µA (x2 Channels) | 2mA |
| Current - Output / Channel | 30 mA | 10 mA |
| Voltage - Supply Span(Min) | 2.7 V | 2.7 V |
| Voltage - Supply Span(Max) | 5 V | 5.5 V |
| Operating Temperature | -40°C ~ 125°C | -40°C ~ 125°C |
| Mounting Type | Surface Mount | Surface Mount |
| Output Type | Rail-to-Rail | - |
Frequently asked questions
What are the fundamental differences between the AD8552AR and the AD8555ARZ-REEL?
The AD8552AR is a dual-channel, zero-drift operational amplifier in an 8-lead SOIC package, while the AD8555ARZ-REEL is a single-channel, digitally programmable sensor signal amplifier with an embedded programmable gain and offset, supplied in an 8-lead SOIC and delivered on tape and reel. The AD8552AR is a general-purpose dual op amp, whereas the AD8555ARZ-REEL is a specialized sensor interface amplifier with digital calibration features.
Can the AD8552AR be used as a direct replacement for the AD8555ARZ-REEL?
No. The two devices are functionally different. The AD8552AR is a dual operational amplifier, while the AD8555ARZ-REEL is a single programmable sensor amplifier with digital gain and offset adjustment. Pin functions, internal architecture, and application circuits differ, so a direct substitution is not possible without redesign and validation.
What are the key electrical specifications of the AD8552AR?
The AD8552AR is a dual zero-drift operational amplifier featuring very low offset voltage (typically 1 µV), low offset voltage drift (typically 0.005 µV/°C), low input bias current, and rail-to-rail input and output operation. It operates from a single supply of 2.7 V to 5 V or dual supplies, with a gain bandwidth product of approximately 1.5 MHz and a low supply current of about 850 µA per amplifier.
What are the key electrical specifications of the AD8555ARZ-REEL?
The AD8555ARZ-REEL is a single-channel, digitally programmable sensor signal amplifier with a programmable gain range of 70 to 1280 and programmable offset adjustment. It features low offset voltage, low drift, and rail-to-rail output. It operates from a single supply of 2.7 V to 5.5 V and communicates via a serial interface for gain and offset calibration. It is supplied in an 8-lead SOIC package on tape and reel.
Are the AD8552AR and AD8555ARZ-REEL pin-compatible?
No. Although both are offered in an 8-lead SOIC package, their pin functions differ. The AD8552AR is a dual op amp with standard dual op amp pinout (two inputs, two outputs, and supply pins), while the AD8555ARZ-REEL has a different pin assignment including serial interface pins for digital programming. They are not pin-compatible and cannot be interchanged on the same PCB footprint without redesign.
What are the typical applications for the AD8552AR versus the AD8555ARZ-REEL?
The AD8552AR is typically used in precision signal conditioning, low-level sensor amplification, medical instrumentation, and general-purpose precision analog circuits requiring dual amplifiers. The AD8555ARZ-REEL is specifically designed for sensor signal conditioning where digital programmability of gain and offset is required, such as in pressure sensors, load cells, and other bridge transducer applications requiring factory or field calibration.
What supply voltage ranges do the AD8552AR and AD8555ARZ-REEL support?
The AD8552AR operates from a single supply of 2.7 V to 5 V (or dual supplies within that range). The AD8555ARZ-REEL operates from a single supply of 2.7 V to 5.5 V. Both are suitable for low-voltage, battery-powered, and portable precision applications.
How does the packaging and delivery format differ between the AD8552AR and AD8555ARZ-REEL?
The AD8552AR is supplied in an 8-lead SOIC package in tube or standard reel quantities depending on the ordering variant. The AD8555ARZ-REEL is specifically supplied in an 8-lead SOIC package on tape and reel, which is the "REEL" suffix designation, intended for automated high-volume assembly. Both share the same SOIC body but differ in delivery format and functional pinout.