Part A
AD8276ARZ
Công ty Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 3044 PCS
- Package
- SOIC-8
- Series
- Linear - Amplifiers - Instrumentation, OP Amps, Buffer Amps
Replacement verdict
Compatible functional replacement candidate
The AD8276ARZ and AD8276BRZ-RL are functionally interchangeable low-power unity-gain difference amplifiers sharing the same SOIC-8 package, pinout, and supply range; the B-grade variant offers tighter gain error and offset voltage specifications, making it a suitable higher-precision substitute for the A-grade part in most designs, with grade-dependent precision parameters requiring validation against the target application's error budget.
Package and Pinout
High match
Supply Voltage Range
High match
Gain Error and Offset Grade
Validation required
Operating Temperature Range
High match
Parts at a glance
Part B
AD8276BRZ-RL
Công ty Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 5184 PCS
- Package
- SOIC-8
- Series
- Linear - Amplifiers - Instrumentation, OP Amps, Buffer Amps
Key differences
Rows are prioritized by design impact. Highlighted values require attention during substitution.
Key electrical and mechanical differences between the two devices
| Parameter | AD8276ARZ | AD8276BRZ-RL | Why it matters |
|---|---|---|---|
| Gain Error (max) | 0.05% | 0.02% | Lower gain error improves DC accuracy of the difference amplifier in precision measurement chains. |
| Offset Voltage (max, RTI) | 250 µV | 150 µV | Lower input offset reduces systematic error, critical for high-accuracy signal conditioning. |
| Offset Voltage Drift (max) | 5 µV/°C | 3 µV/°C | Lower drift maintains accuracy over temperature, important for industrial and automotive applications. |
| CMRR (min, DC) | 80 dB | 86 dB | Higher common-mode rejection suppresses noise and interference on input lines. |
| Input Bias Current (max) | 200 nA | 100 nA | Lower bias current reduces errors when driven from high-impedance sources. |
| Supply Voltage Range | 2.7 V to 36 V | 2.7 V to 36 V | Wide supply range enables use in both single-supply and dual-supply systems. |
| Gain Configuration | Fixed gain = 1 | Fixed gain = 1 | Fixed unity gain defines the difference amplifier transfer function and application suitability. |
| Operating Temperature Range | -40 °C to +85 °C | -40 °C to +85 °C | Confirms both parts are rated for the same environmental conditions. |
| Package | 8-Lead SOIC | 8-Lead SOIC | Identical package ensures drop-in PCB compatibility between the two parts. |
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Send your BOM and application constraints for technical and sourcing review.
Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | AD8276ARZ | AD8276BRZ-RL |
|---|---|---|
| Supplier | - | Analog Devices Inc. |
| Part Status | Active | Active |
| Amplifier Type | Differential | Differential |
| Number of Circuits | 1 | 1 |
| Output Type | Rail-to-Rail | Rail-to-Rail |
| Slew Rate | 1.1V/µs | 1.1V/µs |
| Gain Bandwidth Product | 550 kHz | 550 kHz |
| Voltage - Input Offset | 100 µV | 100 µV |
| Supply Current | 200µA | 200µA |
| Current - Output / Channel | 15 mA | 15 mA |
| Voltage - Supply Span(Min) | 2 V | 2 V |
| Voltage - Supply Span(Max) | 36 V | 36 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 AD8276ARZ and AD8276BRZ-RL?
Both devices are identical AD8276 unity-gain difference amplifiers from Analog Devices in an 8-lead SOIC package. The primary difference is the grade: the AD8276ARZ is the A-grade with specified gain error and offset voltage tolerances, while the AD8276BRZ-RL is the B-grade with tighter specifications and is supplied in tape-and-reel packaging (RL suffix). The B-grade offers improved gain error and offset voltage performance compared to the A-grade.
Are the AD8276ARZ and AD8276BRZ-RL pin-compatible?
Yes. Both parts are offered in the same 8-lead SOIC (R-8) package with identical pinout and footprint, so they are pin-compatible and can share the same PCB land pattern.
What is the supply voltage range for these difference amplifiers?
The AD8276 operates from a single supply of 2.0 V to 36 V, or from dual supplies of ±2.0 V to ±18 V, per the Analog Devices datasheet.
What is the gain configuration of the AD8276ARZ and AD8276BRZ-RL?
Both devices are fixed unity-gain (G = 1) difference amplifiers. The gain is internally set by laser-trimmed resistors, and no external gain-setting components are required.
How do the A-grade and B-grade specifications differ?
The B-grade (AD8276BRZ-RL) is specified with tighter gain error and offset voltage limits than the A-grade (AD8276ARZ). Designers should consult the Analog Devices AD8276 datasheet for the exact grade-specific maximum limits before selecting a grade for a given accuracy budget.
What is the difference between the ARZ and BRZ-RL ordering codes?
The "ARZ" and "BRZ" portions denote the A-grade and B-grade in the RoHS-compliant SOIC package, while the "-RL" suffix indicates tape-and-reel packaging for automated assembly. Both are RoHS-compliant per the Analog Devices ordering guide.
Can the AD8276ARZ and AD8276BRZ-RL be used interchangeably in a design?
Because they share the same package, pinout, and unity-gain topology, they are functionally interchangeable. However, substituting an A-grade for a B-grade (or vice versa) changes the guaranteed accuracy limits, so the design's error budget must be revalidated against the grade-specific datasheet specifications.