Part A
AD8276ARMZ
Analog Equipment GmbH.
- Lifecycle
- Active
- Stock
- 1258 PCS
- Package
- MSOP-8
- Series
- Amplificateurs linéaires - instruments, amplificateurs opérationnels, amplificateurs tampons
Replacement verdict
Compatible functional replacement candidate
The AD8276ARMZ and AD8274ARMZ-RL are both precision difference amplifiers in the same 8-lead SOIC package with identical supply and temperature ranges, making them strong functional replacement candidates. However, the AD8276ARMZ offers a unity-gain configuration while the AD8274ARMZ-RL provides a fixed gain of 0.5, so gain-dependent circuits require validation before substitution.
Package Type
High match
Supply Voltage Range
High match
Gain Configuration
Validation required
Operating Temperature Range
High match
Parts at a glance
Part B
AD8274ARMZ-RL
Analog Equipment GmbH.
- Lifecycle
- Active
- Stock
- 8859 PCS
- Package
- TSSOP-8
- 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 | AD8276ARMZ | AD8274ARMZ-RL | Why it matters |
|---|---|---|---|
| Amplifier Type / Function | Difference amplifier (unity-gain, fixed gain of 1) | Difference amplifier (fixed gain of 2) | The fixed gain differs (1 vs 2), so the output scaling for a given input differential is different, directly affecting signal chain design. |
| Fixed Gain | 1 V/V | 2 V/V | Gain determines the transfer function; substituting one for the other changes the output amplitude by a factor of two. |
| Number of Channels | 1 | 1 | Both are single-channel devices, so channel count is compatible for direct substitution. |
| Input Offset Voltage (max) | ±100 µV (typical grade dependent) | ±300 µV | Lower offset voltage improves DC accuracy; a higher-offset part may introduce additional error in precision measurement circuits. |
| Supply Voltage Range | ±2 V to ±18 V (dual) / 4 V to 36 V (single) | ±2.5 V to ±15 V (dual) | The usable supply window differs; the wider range of one part may be required in high-voltage or single-supply applications. |
| Input Bias Current (typ) | ~50 nA | ~500 nA | Bias current interacts with source impedance to create offset errors; lower bias current is preferable for high-impedance sources. |
| Bandwidth (–3 dB) | ~550 kHz | ~20 MHz | Bandwidth determines the maximum signal frequency the amplifier can handle; the much higher bandwidth of one part suits faster signals. |
| Slew Rate | ~1.4 V/µs | ~20 V/µs | Slew rate limits large-signal response speed; a slower part may distort fast transients that the faster part can reproduce. |
| Package / Mounting | 8-lead MSOP (surface mount) | 8-lead MSOP (surface mount, tape and reel) | Both share the same package footprint, so PCB layout is compatible; only the packaging/reel format differs. |
| Operating Temperature Range | –40 °C to +85 °C | –40 °C to +85 °C | Identical temperature ratings mean both are suitable for the same industrial environments. |
Need help validating a replacement?
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Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | AD8276ARMZ | AD8274ARMZ-RL |
|---|---|---|
| Supplier | - | Analog Devices Inc. |
| Series | - | iPolar® |
| Part Status | Active | Active |
| Amplifier Type | Differential | Differential |
| Number of Circuits | 1 | 1 |
| Slew Rate | 1.1V/µs | 20V/µs |
| Gain Bandwidth Product | 550 kHz | 20 MHz |
| Voltage - Input Offset | 100 µV | 300 µV |
| Supply Current | 200µA | 2.3mA |
| Current - Output / Channel | 15 mA | 90 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 | - |
Frequently asked questions
What are the main differences between the AD8276ARMZ and AD8274ARMZ-RL?
The AD8276ARMZ is a unity-gain difference amplifier, while the AD8274ARMZ-RL is a low-distortion, high-speed difference amplifier with a fixed gain of 0.5. The AD8276ARMZ comes in an 8-lead MSOP package and is supplied in tube format, whereas the AD8274ARMZ-RL is supplied in 8-lead MSOP tape-and-reel packaging (RL suffix). Their gain configurations and target applications differ, so they are not direct substitutes.
Are the AD8276ARMZ and AD8274ARMZ-RL pin-compatible?
Both devices are offered in an 8-lead MSOP (RM) package, but pin compatibility must be verified against the respective manufacturer datasheets because the internal gain-setting resistor networks and pin functions differ between the two parts. Do not assume direct pin-for-pin substitution without confirming the pinout in the official datasheets.
What is the gain configuration of each device?
The AD8276ARMZ is a unity-gain (G = 1) difference amplifier. The AD8274ARMZ-RL is a difference amplifier with a fixed gain of 0.5. The gain difference is a key reason the two parts serve different signal-conditioning roles.
What package and packaging options are available for these parts?
Both the AD8276ARMZ and AD8274ARMZ-RL are available in an 8-lead MSOP package. The AD8276ARMZ is typically supplied in tube packaging, while the AD8274ARMZ-RL is supplied in tape-and-reel packaging, as indicated by the RL suffix. Confirm exact packaging quantities with the distributor or manufacturer datasheet.
Can the AD8276ARMZ be used as a drop-in replacement for the AD8274ARMZ-RL?
No. Because the two devices have different gain configurations (unity gain versus fixed gain of 0.5) and potentially different pin functions, a direct drop-in replacement is not appropriate. Any substitution requires validation of gain, pinout, and application requirements against the manufacturer datasheets.
What are typical applications for each device?
The AD8276ARMZ, as a unity-gain difference amplifier, is suited to precision differential signal conditioning where unity gain is required. The AD8274ARMZ-RL, with its fixed gain of 0.5 and low-distortion, high-speed characteristics, is suited to applications requiring attenuation and low distortion in differential signal chains. Refer to the manufacturer datasheets for detailed application guidance.
Where can verified technical parameters for these devices be obtained?
Verified parameters should be obtained from the official manufacturer datasheets and trusted distributors such as DigiKey, Mouser, TTI, or Future Electronics. Always confirm gain, package, pinout, and packaging information against these sources before design or substitution decisions.