Part A
AD8275ARMZ
Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 5361 PCS
- Package
- MSOP-8
- Series
- Linear - Amplificadores - Instrumentação, OP Amps, Buffer Amps
Replacement verdict
Compatible functional replacement candidate
The AD8275ARMZ and AD8274ARMZ-RL are both precision difference amplifiers in the same 8-lead MSOP package with identical supply and temperature ranges, making them strong functional replacement candidates. However, they differ in gain configuration and bandwidth, so the AD8274ARMZ-RL should be validated against the AD8275ARMZ's signal-conditioning requirements before substitution.
Package Type
High match
Supply Voltage Range
High match
Gain Configuration
Validation required
Bandwidth
Validation required
Parts at a glance
Part B
AD8274ARMZ-RL
Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 8859 PCS
- Package
- TSSOP-8
- Series
- Linear - Amplificadores - Instrumentação, 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 | AD8275ARMZ | AD8274ARMZ-RL | Why it matters |
|---|---|---|---|
| Amplifier Type | Difference amplifier (fixed gain, level shifting) | Difference amplifier (fixed gain) | The AD8275 includes level-shifting/attenuation for driving ADCs, while the AD8274 is a pure difference amplifier; this affects whether external level shifting is needed. |
| Fixed Gain | 0.2 V/V | 0.5 V/V (A grade) / 1 V/V (B grade) | Gain determines the input-to-output scaling; a different gain changes the signal chain transfer function and may require recalibration. |
| Number of Channels | 1 | 2 | Channel count affects board layout and whether one package can handle multiple signal paths; not directly substitutable in multi-channel designs. |
| Supply Voltage Range | 3 V to 15 V (single) / ±1.5 V to ±7.5 V (dual) | ±2.5 V to ±15 V (dual) | Supply range must match the system rails; the AD8275 supports lower single-supply operation while the AD8274 requires dual supplies. |
| Input Voltage Range | Rail-to-rail input (with level shifting) | ±VS (near rail-to-rail) | Input range determines compatibility with sensor/ADC signal swings and whether clipping occurs. |
| Bandwidth (-3 dB) | 15 MHz | 20 MHz | Bandwidth limits the maximum signal frequency the amplifier can pass with acceptable fidelity. |
| Input Offset Voltage (max) | ±1.5 mV | ±0.5 mV (A grade) / ±1 mV (B grade) | Offset voltage directly adds DC error to the measurement; lower offset improves precision in high-accuracy systems. |
| Package | 8-lead MSOP (RMZ) | 8-lead MSOP (RMZ) | Package footprint must match for drop-in replacement; both use the same MSOP-8 outline but pin functions differ. |
| Operating Temperature Range | -40 °C to +85 °C | -40 °C to +85 °C | Temperature range must cover the application environment for reliable operation. |
| Pin Configuration | Level-shift/ADC driver pinout | Standard difference amplifier pinout | Different pin functions mean the parts are not pin-compatible; a board redesign or rework is required to substitute one for the other. |
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 | AD8275ARMZ | AD8274ARMZ-RL |
|---|---|---|
| Supplier | - | Analog Devices Inc. |
| Series | - | iPolar® |
| Part Status | Active | Active |
| Amplifier Type | Differential | Differential |
| Number of Circuits | 1 | 1 |
| Slew Rate | 25V/µs | 20V/µs |
| Gain Bandwidth Product | - | 20 MHz |
| Voltage - Input Offset | 300 µV | 300 µV |
| Supply Current | 1.9mA | 2.3mA |
| Current - Output / Channel | 30 mA | 90 mA |
| Voltage - Supply Span(Min) | 3.3 V | 5 V |
| Voltage - Supply Span(Max) | 15 V | 36 V |
| Operating Temperature | -40°C ~ 85°C | -40°C ~ 85°C |
| Mounting Type | Surface Mount | Surface Mount |
| Output Type | Rail-to-Rail | - |
| -3 dB Bandwidth | 15 MHz | - |
Frequently asked questions
What are the key differences between the AD8275ARMZ and AD8274ARMZ-RL?
The AD8275ARMZ is a single-channel, low-power, wide-supply-range difference amplifier optimized for precision signal conditioning, while the AD8274ARMZ-RL is a dual-channel, high-speed difference amplifier with a fixed gain of 0.5 and higher bandwidth. The AD8275ARMZ offers a gain of 0.2 and is specified for lower power consumption, whereas the AD8274ARMZ-RL provides two independent amplifiers in one package for multichannel applications.
Are the AD8275ARMZ and AD8274ARMZ-RL pin-compatible?
No. The AD8275ARMZ is a single-channel device in an 8-lead MSOP (ARMZ) package, while the AD8274ARMZ-RL is a dual-channel device in an 8-lead MSOP package with a different pinout. Pin functions and assignments differ between the two, so they cannot be interchanged without PCB redesign.
What are the supply voltage ranges for these two difference amplifiers?
The AD8275ARMZ operates from a single supply of 3.3 V to 36 V or dual supplies of ±1.65 V to ±18 V. The AD8274ARMZ-RL operates from a single supply of 2.7 V to 36 V or dual supplies of ±1.35 V to ±18 V. Both support wide supply ranges suitable for industrial and instrumentation applications.
How do the bandwidth and gain specifications compare?
The AD8275ARMZ has a fixed gain of 0.2 and a bandwidth of 15 MHz at G = 0.2. The AD8274ARMZ-RL has a fixed gain of 0.5 and a bandwidth of 20 MHz at G = 0.5. The AD8274ARMZ-RL provides higher gain and wider bandwidth, making it better suited for higher-frequency signal chains.
Which part is better for low-power multichannel designs?
The AD8274ARMZ-RL integrates two difference amplifiers in a single package, reducing board space and component count for multichannel systems. The AD8275ARMZ is a single-channel device with lower quiescent current per channel, making it preferable when only one channel is needed and minimum power consumption is critical.
What are the typical applications for each device?
The AD8275ARMZ is commonly used in precision instrumentation, current sensing, and signal conditioning where low power and wide supply range are required. The AD8274ARMZ-RL is suited for high-speed differential signal processing, video and communication systems, and multichannel data acquisition where dual channels and higher bandwidth are beneficial.
Do both parts come in the same package type?
Both devices are offered in 8-lead MSOP packages (ARMZ suffix), but the AD8275ARMZ is a single-channel part and the AD8274ARMZ-RL is a dual-channel part. The package outline is similar, but internal die configuration and pinout differ, so they are not drop-in replacements.