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Cirrus Logic |
IC INST AMP 2 CIRCUIT 8SOIC |
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IC OPAMP GP 2 CIRCUIT 8SOIC |
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IC INST AMP 2 CIRCUIT 8SOIC |
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IC INST AMP 2 CIRCUIT 8SOIC |
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IC INST AMP 2 CIRCUIT 8SOIC |
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IC OPAMP GP 2 CIRCUIT 8SOIC |
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Cirrus Logic |
IC INST AMP 1 CIRCUIT 8SOIC |
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Cirrus Logic |
IC OPAMP PGA 2 CIRCUIT 24SSOP |
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IC OPAMP GP 1 CIRCUIT 8SOIC |
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IC INST AMP 2 CIRCUIT 8SOIC |
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IC INST AMP 2 CIRCUIT 8SOIC |
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Cirrus Logic |
IC INST AMP 1 CIRCUIT 8QFN |
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Cirrus Logic |
IC INST AMP 1 CIRCUIT 8SOIC |
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Cirrus Logic |
IC OPAMP GP 1 CIRCUIT 8SOIC |
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Cirrus Logic |
IC INST AMP 2 CIRCUIT 8QFN |
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Cirrus Logic |
IC INST AMP 2 CIRCUIT 8QFN |
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Cirrus Logic |
IC INST AMP 1 CIRCUIT 8QFN |
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Cirrus Logic |
IC INST AMP 1 CIRCUIT 8QFN |
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Cirrus Logic |
IC INST AMP 2 CIRCUIT 8QFN |
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Cirrus Logic |
IC INST AMP 2 CIRCUIT 8QFN |
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Linear amplifiers are analog ICs that process continuous signals with high fidelity. This category includes instrumentation amplifiers (In-Amps), operational amplifiers (OP Amps), and buffer amplifiers. They are critical in signal conditioning, filtering, and voltage amplification across electronics, medical devices, and industrial systems.
| Type | Functional Characteristics | Application Examples |
|---|---|---|
| Instrumentation Amplifiers | High CMRR, low offset voltage, fixed/gain-programmable | Sensor bridges, medical instrumentation, precision data acquisition |
| Operational Amplifiers | Voltage feedback, high gain, configurable circuits | Active filters, integrators, comparators, audio amplifiers |
| Buffer Amplifiers | High input impedance, unity gain, drive capability | ADC drivers, signal isolation, impedance matching |
Typical IC construction includes: - Differential Input Stage: Bipolar/JFET transistors for high impedance - Gain Stage: Cascoded amplification with laser-trimmed resistors - Output Stage: Class AB push-pull for low distortion - Protection Circuits: ESD protection, thermal shutdown Packaged in 8-20 pin configurations (SOIC, TSSOP, QFN).
| Parameter | Importance |
|---|---|
| Gain Bandwidth Product (GBP) | Determines frequency response capability |
| Input Offset Voltage (Vos) | Impacts DC precision in low-level signal amplification |
| Slew Rate (SR) | Defines maximum signal transition speed |
| Common-Mode Rejection Ratio (CMRR) | Measures noise/interference immunity |
| Quiescent Current (Iq) | Impacts power efficiency in battery applications |
| Manufacturer | Product Highlights |
|---|---|
| Analog Devices | AD8221 (Instrumentation Amp), OP1177 (Precision OP Amp) |
| TI | LM741 (Classic OP Amp), INA128 (Low-power In-Amp) |
| STMicroelectronics | TSV912 (Rail-to-Rail OP Amp), LMV358 (Low-voltage Buffer) |
| Maxim | MAX4463 (Audio Buffer), MAX41460 (High-speed OP Amp) |
Key considerations: - Bandwidth vs. power consumption trade-off - Required CMRR in noisy environments - Rail-to-rail output for low-voltage systems - Temperature stability in industrial applications - Cost-sensitive vs. precision design priorities
Future directions include: - Sub-1V operation for IoT devices - Integration with digital calibration (smart amplifiers) - GaN/SiC-based amplifiers for high-voltage applications - AI-driven parameter optimization tools - Automotive-grade amplifiers for ADAS systems