Linear - Amplifiers - Instrumentation, OP Amps, Buffer Amps

Image Part Number Description / PDF Quantity Rfq
BU7464F-E2

BU7464F-E2

ROHM Semiconductor

IC OPAMP GP 4 CIRCUIT 14SOP

0

BU7245HFV-TR

BU7245HFV-TR

ROHM Semiconductor

IC OPAMP GP 1 CIRCUIT HVSOF5

7935

BU7271SG-TR

BU7271SG-TR

ROHM Semiconductor

IC OPAMP GP 1 CIRCUIT 5SSOP

2912

BU7241SG-TR

BU7241SG-TR

ROHM Semiconductor

IC OPAMP GP 1 CIRCUIT 5SSOP

1043

BU7486F-E2

BU7486F-E2

ROHM Semiconductor

IC CMOS 2 CIRCUIT 8SOP

1619

BU7485SG-TR

BU7485SG-TR

ROHM Semiconductor

IC OPAMP GP 1 CIRCUIT 5SSOP

0

LM324FVJ-E2

LM324FVJ-E2

ROHM Semiconductor

IC OPAMP GP 4 CIRCUIT 14TSSOP

1308

BU7464SF-E2

BU7464SF-E2

ROHM Semiconductor

IC CMOS 4 CIRCUIT 14SOP

2381

BA82902YFJ-CE2

BA82902YFJ-CE2

ROHM Semiconductor

IC OPAMP GP 4 CIRCUIT 14SOPJ

2420

BA4560FVT-GE2

BA4560FVT-GE2

ROHM Semiconductor

IC OPAMP GP 2 CIRCUIT 8TSSOP

2799

BU7495HFV-TR

BU7495HFV-TR

ROHM Semiconductor

IC OPAMP GP 1 CIRCUIT HVSOF5

3000

BD8876FV-E2

BD8876FV-E2

ROHM Semiconductor

IC OPAMP GP 1 CIRCUIT 14SSOPB

2500

BD12734FV-GE2

BD12734FV-GE2

ROHM Semiconductor

IC OPAMP GP 4 CIRCUIT 14SSOPB

2500

LM4565F-GE2

LM4565F-GE2

ROHM Semiconductor

IC OPAMP GP 2 CIRCUIT 8SOP

0

BA4580RFJ-GE2

BA4580RFJ-GE2

ROHM Semiconductor

IC OPAMP GP 2 CIRCUIT SOP8J

2274

LMR934FJ-GE2

LMR934FJ-GE2

ROHM Semiconductor

IC OPAMP GP 4 CIRCUIT 14SOPJ

2485

BA4560FV-GE2

BA4560FV-GE2

ROHM Semiconductor

IC OPAMP GP 2 CIRCUIT 8SSOPB

2479

BU7462FVM-TR

BU7462FVM-TR

ROHM Semiconductor

IC OPAMP GP 2 CIRCUIT 8MSOP

2729

BA2902YFV-CE2

BA2902YFV-CE2

ROHM Semiconductor

IC OPAMP GP 4 CIRCUIT 14SSOPB

2500

BA4560FVM-GTR

BA4560FVM-GTR

ROHM Semiconductor

IC OPAMP GP 2 CIRCUIT 8MSOP

3664

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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