Linear - Amplifiers - Instrumentation, OP Amps, Buffer Amps

Image Part Number Description / PDF Quantity Rfq
BU7462F-E2

BU7462F-E2

ROHM Semiconductor

IC OPAMP GP 2 CIRCUIT 8SOP

4214

BU7205SHFV-TR

BU7205SHFV-TR

ROHM Semiconductor

IC OPAMP GP 1 CIRCUIT HVSOF5

971

BA2115FVM-TR

BA2115FVM-TR

ROHM Semiconductor

IC OPAMP GP 2 CIRCUIT 8MSOP

2969

BU7411G-TR

BU7411G-TR

ROHM Semiconductor

IC OPAMP GP 1 CIRCUIT 5SSOP

871

LM4559F-GE2

LM4559F-GE2

ROHM Semiconductor

IC OPAMP GP 2 CIRCUIT 8SOP

2024

BA2904YFV-MGE2

BA2904YFV-MGE2

ROHM Semiconductor

IC OPAMP GP 2 CIRCUIT 8SSOPB

2392

BA4558FV-GE2

BA4558FV-GE2

ROHM Semiconductor

IC OPAMP GP 2 CIRCUIT 8SSOPB

2494

BU7461SG-TR

BU7461SG-TR

ROHM Semiconductor

IC OPAMP GP 1 CIRCUIT 5SSOP

5695

LMR358FJ-GE2

LMR358FJ-GE2

ROHM Semiconductor

IC OPAMP GP 2 CIRCUIT SOP8J

73

BA4558FVT-GE2

BA4558FVT-GE2

ROHM Semiconductor

IC OPAMP GP 2 CIRCUIT 8TSSOP

1920

BA3474FV-E2

BA3474FV-E2

ROHM Semiconductor

IC OPAMP GP 4 CIRCUIT 14SSOPB

3034

BU7487F-E2

BU7487F-E2

ROHM Semiconductor

IC CMOS 4 CIRCUIT 14SOP

1818

BA15218F-E2

BA15218F-E2

ROHM Semiconductor

IC OPAMP GP 2 CIRCUIT 8SOP

2467

LM2904FJ-E2

LM2904FJ-E2

ROHM Semiconductor

IC OPAMP GP 2 CIRCUIT SOP8J

2410

BA2904F-E2

BA2904F-E2

ROHM Semiconductor

IC OPAMP GP 2 CIRCUIT 8SOP

1244

BD7542FVM-TR

BD7542FVM-TR

ROHM Semiconductor

IC OPAMP GP 2 CIRCUIT 8MSOP

2869

BU7242FVM-TR

BU7242FVM-TR

ROHM Semiconductor

IC OPAMP GP 2 CIRCUIT 8MSOP

3017

BD7542F-E2

BD7542F-E2

ROHM Semiconductor

IC OPAMP GP 2 CIRCUIT 8SOP

4948

BD12732FVM-GTR

BD12732FVM-GTR

ROHM Semiconductor

IC OPAMP GP 2 CIRCUIT 8MSOP

2017

BA10358

BA10358

ROHM Semiconductor

IC OPAMP GP 2 CIRCUIT 8DIP

677

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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