Linear - Amplifiers - Instrumentation, OP Amps, Buffer Amps

Image Part Number Description / PDF Quantity Rfq
BA82902YFVJ-CE2

BA82902YFVJ-CE2

ROHM Semiconductor

IC OPAMP GP 4 CIRCUIT 14TSSOP

2486

BA4584YFV-MGE2

BA4584YFV-MGE2

ROHM Semiconductor

IC OPAMP GP 4 CIRCUIT 14SSOPB

2242

BA2107G-TR

BA2107G-TR

ROHM Semiconductor

IC OPAMP GP 1 CIRCUIT 5SSOP

1316

BA4558RF-E2

BA4558RF-E2

ROHM Semiconductor

IC OPAMP GP 2 CIRCUIT 8SOP

1843

BD1321G-TR

BD1321G-TR

ROHM Semiconductor

IC OPAMP GP 1 CIRCUIT 5SSOP

569

BA3474YFV-CE2

BA3474YFV-CE2

ROHM Semiconductor

IC OPAMP GP 4 CIRCUIT 14SSOPB

2203

BU7244YFV-CE2

BU7244YFV-CE2

ROHM Semiconductor

IC CMOS 4 CIRCUIT 14SSOPB

2168

LMR341G-GTR

LMR341G-GTR

ROHM Semiconductor

IC CMOS 1 CIRCUIT 6SSOP

1076

BA2904YF-LBH2

BA2904YF-LBH2

ROHM Semiconductor

IC OPAMP GP 2 CIRCUIT 8SOP

200

BA82904YFVM-CTR

BA82904YFVM-CTR

ROHM Semiconductor

IC OPAMP GP 2 CIRCUIT 8MSOP

1344

TLR344FVJ-E2

TLR344FVJ-E2

ROHM Semiconductor

IC CMOS 4 CIRCUIT 14TSSOP

2232

BU7442SFVM-TR

BU7442SFVM-TR

ROHM Semiconductor

IC OPAMP GP 2 CIRCUIT 8MSOP

0

LMR932FVM-GTR

LMR932FVM-GTR

ROHM Semiconductor

IC OPAMP GP 2 CIRCUIT 8MSOP

2647

LMR822F-GE2

LMR822F-GE2

ROHM Semiconductor

IC OPAMP GP 2 CIRCUIT 8SOP

2490

BU7264SFV-E2

BU7264SFV-E2

ROHM Semiconductor

IC CMOS 4 CIRCUIT 14SSOPB

2435

BA2904YF-MGE2

BA2904YF-MGE2

ROHM Semiconductor

IC OPAMP GP 2 CIRCUIT 8SOP

4449

LM4565FV-GE2

LM4565FV-GE2

ROHM Semiconductor

IC OPAMP GP 2 CIRCUIT 8SSOPB

2149

LMR824F-GE2

LMR824F-GE2

ROHM Semiconductor

IC OPAMP GP 4 CIRCUIT 14SOP

2500

BU7265G-TR

BU7265G-TR

ROHM Semiconductor

IC OPAMP GP 1 CIRCUIT 5SSOP

1684

BU7487SFV-E2

BU7487SFV-E2

ROHM Semiconductor

IC CMOS 4 CIRCUIT 14SSOPB

43

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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