Part A
AD8276ARMZ
テキサス・インスツルメンツ
- Lifecycle
- Active
- Stock
- 1258 個数
- Package
- MSOP-8
- Series
- リニアアンプ - 計装用、オペアンプ、バッファアンプ
Replacement verdict
Compatible functional replacement candidate
The AD8276ARMZ and AD8275ARMZ-RL are functionally related difference amplifiers from the same family, sharing an identical 8-lead SOIC footprint and comparable supply and temperature ranges, but they differ in gain configuration and input/output architecture. The AD8276ARMZ is a unity-gain difference amplifier, while the AD8275ARMZ-RL is a gain-of-0.2 difference amplifier with an integrated level-shifting reference buffer, so substitution requires validation of gain, output swing, and reference biasing in the target application.
Package Type
High match
Gain Configuration
Validation required
Output Architecture
Validation required
Supply Voltage Range
High match
Parts at a glance
Part B
AD8275ARMZ-RL
テキサス・インスツルメンツ
- Lifecycle
- Active
- Stock
- 3114 個数
- Package
- TSSOP-8
- Series
- リニアアンプ - 計装用、オペアンプ、バッファアンプ
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 | AD8275ARMZ-RL | Why it matters |
|---|---|---|---|
| Amplifier Type | Difference amplifier (unity-gain) | Difference amplifier (fixed gain of 0.2) | The core function differs: the AD8276 is a unity-gain difference amplifier while the AD8275 provides a fixed attenuation of 0.2, so they are not directly interchangeable in signal-chain gain planning. |
| Gain | 1 V/V | 0.2 V/V | Gain determines the output scaling relative to the input differential voltage; substituting one for the other changes the overall transfer function of the circuit. |
| Input Voltage Range (differential) | ±V supply dependent (rail-to-rail input) | ±V supply dependent (rail-to-rail input) | Both accept wide differential inputs, but the usable input range interacts with the gain setting, affecting headroom and accuracy in high-voltage sensing applications. |
| Supply Voltage Range | 2.7 V to 36 V (single) / ±1.35 V to ±18 V (dual) | 2.7 V to 36 V (single) / ±1.35 V to ±18 V (dual) | Wide supply range enables use in both low-voltage and high-voltage systems; identical ranges mean supply compatibility is not a differentiator. |
| Input Offset Voltage | ±100 µV (typ) | ±100 µV (typ) | Offset voltage directly limits DC accuracy; matching values indicate comparable precision performance. |
| Bandwidth (-3 dB) | 550 kHz (G = 1) | 1.5 MHz (G = 0.2) | Bandwidth affects the maximum signal frequency the amplifier can handle; the AD8275 offers higher bandwidth due to its attenuation configuration. |
| CMRR | 86 dB (typ) | 86 dB (typ) | Common-mode rejection ratio determines how well the amplifier rejects unwanted common-mode signals; identical values indicate similar noise immunity. |
| Package | 8-lead MSOP (RMZ) | 8-lead MSOP (RMZ), tape and reel | Package and packaging format affect PCB footprint and assembly; both share the same MSOP footprint, but the -RL suffix indicates tape-and-reel delivery. |
| Operating Temperature Range | -40 °C to +85 °C | -40 °C to +85 °C | Temperature range defines the environments in which the part can operate reliably; identical ranges mean environmental compatibility is equivalent. |
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Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | AD8276ARMZ | AD8275ARMZ-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 | 25V/µs |
| -3 dB Bandwidth | - | 15 MHz |
| Voltage - Input Offset | 100 µV | 300 µV |
| Supply Current | 200µA | 1.9mA |
| Current - Output / Channel | 15 mA | 30 mA |
| Voltage - Supply Span(Min) | 2 V | 3.3 V |
| Voltage - Supply Span(Max) | 36 V | 15 V |
| Operating Temperature | -40°C ~ 85°C | -40°C ~ 85°C |
| Mounting Type | Surface Mount | Surface Mount |
| Gain Bandwidth Product | 550 kHz | - |
Frequently asked questions
What are the key differences between the AD8276ARMZ and AD8275ARMZ-RL?
The AD8276ARMZ is a low power, unity-gain difference amplifier, while the AD8275ARMZ-RL is a gain-of-0.2 difference amplifier designed for high voltage level shifting. The AD8276 operates on a supply range of 2.5 V to 36 V, whereas the AD8275 operates on a single 3.3 V to 15 V supply. The AD8275ARMZ-RL is supplied in a 500-unit reel, while the AD8276ARMZ is supplied in a tube.
Are the AD8276ARMZ and AD8275ARMZ-RL pin-compatible?
Yes, both devices are offered in the same 8-lead MSOP (RM) package and share the same pinout, allowing them to be used in the same PCB footprint. However, circuit performance must be revalidated because the two parts have different gain configurations and supply requirements.
What is the gain configuration of each device?
The AD8276ARMZ is a unity-gain difference amplifier (gain = 1). The AD8275ARMZ-RL is a difference amplifier with a fixed gain of 0.2, intended for attenuating and level-shifting high voltage signals.
What supply voltage ranges do these devices support?
The AD8276ARMZ operates from a single supply of 2.5 V to 36 V or a dual supply of ±1.25 V to ±18 V. The AD8275ARMZ-RL operates from a single supply of 3.3 V to 15 V.
Can the AD8275ARMZ-RL be used as a direct drop-in replacement for the AD8276ARMZ?
No. Although the packages and pinouts match, the AD8275ARMZ-RL has a gain of 0.2 versus unity gain for the AD8276ARMZ, and its supply range is limited to 3.3 V to 15 V. A direct substitution would change the signal transfer function and may exceed the AD8275 supply rating, so the circuit must be redesigned and verified.
What are the typical applications for each device?
The AD8276ARMZ is suited for precision difference amplification, current sensing, and signal conditioning where unity gain and wide supply range are needed. The AD8275ARMZ-RL is intended for high voltage level shifting and attenuation, such as interfacing high voltage signals to low voltage ADCs.
How do the packaging options differ between the two parts?
The AD8276ARMZ is supplied in an 8-lead MSOP tube package. The AD8275ARMZ-RL is supplied in an 8-lead MSOP tape-and-reel package with a 500-unit reel quantity, as indicated by the -RL suffix.