Part A
AD8276ARZ
Analog Equipment GmbH.
- Lifecycle
- Active
- Stock
- 3044 PCS
- Package
- SOIC-8
- Series
- Amplificateurs linéaires - instruments, amplificateurs opérationnels, amplificateurs tampons
Replacement verdict
Compatible functional replacement candidate
The AD8276ARZ and AD8273ARZ-RL are both precision difference amplifiers from Analog Devices in the same 8-lead SOIC package, sharing a common functional architecture and supply range. However, they differ in gain configuration and channel count, so the AD8273ARZ-RL can serve as a functional substitute only after the gain and channel requirements of the target design are validated against the AD8276ARZ.
Amplifier Function
High match
Gain Configuration
Validation required
Channel Count
Validation required
Package Type
High match
Parts at a glance
Part B
AD8273ARZ-RL
Analog Equipment GmbH.
- Lifecycle
- Active
- Stock
- 2476 PCS
- Package
- SOIC-14
- 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 | AD8276ARZ | AD8273ARZ-RL | Why it matters |
|---|---|---|---|
| Amplifier Type | Difference Amplifier (single) | Difference Amplifier (dual) | Determines the number of independent difference amplifier channels available in the package, directly affecting circuit topology and channel count. |
| Number of Channels | 1 | 2 | A single-channel device cannot directly replace a dual-channel device in multi-channel signal chains without adding components. |
| Package / Case | 8-Lead SOIC | 14-Lead SOIC | Different package footprints require PCB layout changes and are not drop-in compatible. |
| Supply Voltage Range | 2.7 V to 36 V (single supply) | 2.7 V to 36 V (single supply) | Both support wide supply ranges, but verifying identical limits ensures compatibility across the target system's power rails. |
| Gain Configuration | Fixed gain of 1 (unity) | Fixed gain of 1 (unity) | Fixed unity gain means the transfer function is identical, so signal scaling behavior is preserved between parts. |
| Input Offset Voltage (max) | ±250 µV | ±250 µV | Offset voltage directly impacts DC accuracy; matching values indicate comparable precision performance. |
| Bandwidth (-3 dB) | 550 kHz | 550 kHz | Bandwidth determines the maximum signal frequency the amplifier can process with acceptable attenuation. |
| Operating Temperature Range | -40 °C to +85 °C | -40 °C to +85 °C | Identical temperature ratings confirm both parts suit the same environmental conditions. |
| Quiescent Current (per amplifier) | 200 µA | 200 µA | Quiescent current affects power budget; matching values indicate similar power consumption per channel. |
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 | AD8276ARZ | AD8273ARZ-RL |
|---|---|---|
| Supplier | - | Analog Devices Inc.,Rochester Electronics, LLC |
| Part Status | Active | Active |
| Amplifier Type | Differential | Audio |
| Number of Circuits | 1 | 2 |
| Slew Rate | 1.1V/µs | 20V/µs |
| Gain Bandwidth Product | 550 kHz | 20 MHz |
| Voltage - Input Offset | 100 µV | 200 µV |
| Current - Output / Channel | 15 mA | 100 mA |
| Voltage - Supply Span(Min) | 2 V | 5 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 |
| Output Type | Rail-to-Rail | - |
| Supply Current | 200µA | - |
Frequently asked questions
What are the primary functional differences between the AD8276ARZ and AD8273ARZ-RL?
The AD8276ARZ is a single-channel, low-power, wide-supply-range difference amplifier, while the AD8273ARZ-RL is a dual-channel, high-speed difference amplifier. The AD8276 is optimized for low power consumption and wide supply operation, whereas the AD8273 is designed for higher bandwidth and dual-channel applications.
Are the AD8276ARZ and AD8273ARZ-RL pin-compatible?
No. The AD8276ARZ is a single-channel device in an 8-lead SOIC package, while the AD8273ARZ-RL is a dual-channel device in a 14-lead SOIC package. The pin counts and pin functions differ, so they are not pin-compatible or directly interchangeable on the same PCB footprint.
What are the supply voltage ranges for the AD8276ARZ and AD8273ARZ-RL?
The AD8276ARZ operates from a wide supply range of ±2 V to ±18 V (or 4 V to 36 V single-supply). The AD8273ARZ-RL operates from ±5 V to ±15 V (or 10 V to 30 V single-supply). The AD8276 supports a wider low-voltage supply range, while the AD8273 requires a higher minimum supply.
How do the bandwidth specifications compare between the two devices?
The AD8276ARZ has a bandwidth of approximately 550 kHz at a gain of 1. The AD8273ARZ-RL is a higher-speed device with a bandwidth of approximately 20 MHz at a gain of 1. The AD8273 is therefore better suited for higher-frequency signal processing applications.
What are the typical quiescent supply currents for the AD8276ARZ and AD8273ARZ-RL?
The AD8276ARZ has a typical quiescent supply current of approximately 200 µA per amplifier, making it suitable for low-power designs. The AD8273ARZ-RL has a higher typical quiescent supply current of approximately 2.5 mA per amplifier, reflecting its higher-speed design.
Can the AD8276ARZ and AD8273ARZ-RL be used in single-supply applications?
Yes, both devices support single-supply operation. The AD8276ARZ operates from 4 V to 36 V single-supply, while the AD8273ARZ-RL operates from 10 V to 30 V single-supply. However, the AD8276 supports lower single-supply voltages than the AD8273.
What are the package and temperature range specifications for these devices?
Both the AD8276ARZ and AD8273ARZ-RL are offered in SOIC packages and are specified over the industrial temperature range of −40°C to +85°C. The AD8276ARZ uses an 8-lead SOIC, while the AD8273ARZ-RL uses a 14-lead SOIC.
Which device is more suitable for precision low-power signal conditioning?
The AD8276ARZ is more suitable for precision low-power signal conditioning due to its lower quiescent current (approximately 200 µA per amplifier) and wide supply range. The AD8273ARZ-RL, with higher supply current and higher bandwidth, is better suited for higher-speed dual-channel applications rather than ultra-low-power precision designs.