Linear - Amplifiers - Instrumentation, OP Amps, Buffer Amps

Image Part Number Description / PDF Quantity Rfq
LMR342FVJ-GE2

LMR342FVJ-GE2

ROHM Semiconductor

IC OPAMP GP 2 CIRCUIT 8TSSOP

4978

BA82904YF-CE2

BA82904YF-CE2

ROHM Semiconductor

IC OPAMP GP 2 CIRCUIT 8SOP

2314

BU7486SFV-E2

BU7486SFV-E2

ROHM Semiconductor

IC CMOS 2 CIRCUIT 8SSOPB

2482

BU7441SG-TR

BU7441SG-TR

ROHM Semiconductor

IC OPAMP GP 1 CIRCUIT 5SSOP

0

BA2902SF-E2

BA2902SF-E2

ROHM Semiconductor

IC OPAMP GP 4 CIRCUIT 14SOP

5

BU7261SG-TR

BU7261SG-TR

ROHM Semiconductor

IC OPAMP GP 1 CIRCUIT 5SSOP

3457

BU7461G-TR

BU7461G-TR

ROHM Semiconductor

IC OPAMP GP 1 CIRCUIT 5SSOP

2702

BA4560F-E2

BA4560F-E2

ROHM Semiconductor

IC OPAMP GP 2 CIRCUIT 8SOP

0

BU7242F-E2

BU7242F-E2

ROHM Semiconductor

IC OPAMP GP 2 CIRCUIT 8SOP

2500

BA2904WFV-E2

BA2904WFV-E2

ROHM Semiconductor

IC OPAMP GP 2 CIRCUIT 8SSOPB

2343

LMR934FV-GE2

LMR934FV-GE2

ROHM Semiconductor

IC OPAMP GP 4 CIRCUIT 14SSOPB

2475

BU7486SF-E2

BU7486SF-E2

ROHM Semiconductor

IC CMOS 2 CIRCUIT 8SOP

2495

BU7291G-TR

BU7291G-TR

ROHM Semiconductor

IC OPAMP GP 1 CIRCUIT 5SSOP

3390

BU7262F-E2

BU7262F-E2

ROHM Semiconductor

IC OPAMP GP 2 CIRCUIT 8SOP

0

LMR932FVJ-GE2

LMR932FVJ-GE2

ROHM Semiconductor

IC OPAMP GP 2 CIRCUIT 8TSSOP

2370

BD7561SG-TR

BD7561SG-TR

ROHM Semiconductor

IC OPAMP GP 1 CIRCUIT 5SSOP

1320

BA10324A

BA10324A

ROHM Semiconductor

IC OPAMP DIFF 4 CIRCUIT 14DIP

677

BA15532F-E2

BA15532F-E2

ROHM Semiconductor

IC OPAMP GP 2 CIRCUIT 8SOP

2249

LMR358F-GE2

LMR358F-GE2

ROHM Semiconductor

IC OPAMP GP 2 CIRCUIT 8SOP

2268

BA3472YF-CGE2

BA3472YF-CGE2

ROHM Semiconductor

IC OPAMP GP 2 CIRCUIT 8SOP

1475

Linear - Amplifiers - Instrumentation, OP Amps, Buffer Amps

1. Overview

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.

2. Main Types and Functional Classification

TypeFunctional CharacteristicsApplication Examples
Instrumentation AmplifiersHigh CMRR, low offset voltage, fixed/gain-programmableSensor bridges, medical instrumentation, precision data acquisition
Operational AmplifiersVoltage feedback, high gain, configurable circuitsActive filters, integrators, comparators, audio amplifiers
Buffer AmplifiersHigh input impedance, unity gain, drive capabilityADC drivers, signal isolation, impedance matching

3. Structure and Composition

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).

4. Key Technical Specifications

ParameterImportance
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

5. Application Fields

  • Medical: ECG machines, blood analyzers
  • Industrial: PLCs, strain gauge interfaces
  • Consumer: Audio preamplifiers, sensor hubs
  • Telecom: Fiber optic transimpedance amplifiers
  • Automotive: Battery management system sensors

6. Leading Manufacturers and Products

ManufacturerProduct Highlights
Analog DevicesAD8221 (Instrumentation Amp), OP1177 (Precision OP Amp)
TILM741 (Classic OP Amp), INA128 (Low-power In-Amp)
STMicroelectronicsTSV912 (Rail-to-Rail OP Amp), LMV358 (Low-voltage Buffer)
MaximMAX4463 (Audio Buffer), MAX41460 (High-speed OP Amp)

7. Selection Guidelines

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

8. Industry Trends

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

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