Linear - Amplifiers - Instrumentation, OP Amps, Buffer Amps

Image Part Number Description / PDF Quantity Rfq
LMR824FJ-GE2

LMR824FJ-GE2

ROHM Semiconductor

IC OPAMP GP 4 CIRCUIT 14SOPJ

2450

LMR982FVM-TR

LMR982FVM-TR

ROHM Semiconductor

IC OPAMP GP 2 CIRCUIT 10MSOP

2729

BA3404FVM-TR

BA3404FVM-TR

ROHM Semiconductor

IC OPAMP GP 2 CIRCUIT 8MSOP

2686

BU7294FV-E2

BU7294FV-E2

ROHM Semiconductor

IC CMOS 4 CIRCUIT 14SSOPB

1240

BU7242SNUX-TR

BU7242SNUX-TR

ROHM Semiconductor

IC OPAMP GP 2 CIRC VSON008X2030

3940

BU7294SF-E2

BU7294SF-E2

ROHM Semiconductor

IC CMOS 4 CIRCUIT 14SOP

2490

BU5281G-TR

BU5281G-TR

ROHM Semiconductor

IC OPAMP GP 1 CIRCUIT 5SSOP

1

BA2902SFV-E2

BA2902SFV-E2

ROHM Semiconductor

IC OPAMP GP 4 CIRCUIT 14SSOPB

135

BU7266FVM-TR

BU7266FVM-TR

ROHM Semiconductor

IC CMOS 2 CIRCUIT 8MSOP

1566

BU7262FVM-TR

BU7262FVM-TR

ROHM Semiconductor

IC OPAMP GP 2 CIRCUIT 8MSOP

8695

BA10358FJ-GE2

BA10358FJ-GE2

ROHM Semiconductor

IC OPAMP GP 2 CIRCUIT SOP8J

2317

LMR342FV-GE2

LMR342FV-GE2

ROHM Semiconductor

IC CMOS 2 CIRCUIT 8SSOPB

2669

BU7411SG-TR

BU7411SG-TR

ROHM Semiconductor

IC OPAMP GP 1 CIRCUIT 5SSOP

3643

BD7542SFVM-TR

BD7542SFVM-TR

ROHM Semiconductor

IC OPAMP GP 2 CIRCUIT 8MSOP

2966

BD8878FV-E2

BD8878FV-E2

ROHM Semiconductor

IC OPAMP GP 1 CIRCUIT 14SSOPB

2160

BU7261G-TR

BU7261G-TR

ROHM Semiconductor

IC OPAMP GP 1 CIRCUIT 5SSOP

2685

BA4560YFVM-MGTR

BA4560YFVM-MGTR

ROHM Semiconductor

IC OPAMP GP 2 CIRCUIT 8MSOP

2995

LMR358FV-GE2

LMR358FV-GE2

ROHM Semiconductor

IC OPAMP GP 2 CIRCUIT 8SSOPB

2492

BA3472YFVM-CTR

BA3472YFVM-CTR

ROHM Semiconductor

IC OPAMP GP 2 CIRCUIT 8MSOP

2384

BA4580YF-MGE2

BA4580YF-MGE2

ROHM Semiconductor

IC OPAMP GP 2 CIRCUIT 8SOP

225

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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