Linear - Amplifiers - Instrumentation, OP Amps, Buffer Amps

Image Part Number Description / PDF Quantity Rfq
BD12732F-GE2

BD12732F-GE2

ROHM Semiconductor

IC OPAMP GP 2 CIRCUIT 8SOP

2485

BD7562SFVM-TR

BD7562SFVM-TR

ROHM Semiconductor

IC OPAMP GP 2 CIRCUIT 8MSOP

1034

BU7487SF-E2

BU7487SF-E2

ROHM Semiconductor

IC CMOS 4 CIRCUIT 14SOP

2395

LMR321G-GTR

LMR321G-GTR

ROHM Semiconductor

IC OPAMP GP 1 CIRCUIT 5SSOP

365

BD5291G-GTL

BD5291G-GTL

ROHM Semiconductor

IC OPAMP GP 1 CIRCUIT 5SSOP

7020

BU7244SFV-E2

BU7244SFV-E2

ROHM Semiconductor

IC CMOS 4 CIRCUIT 14SSOPB

2404

BU7481G-TR

BU7481G-TR

ROHM Semiconductor

IC OPAMP GP 1 CIRCUIT 5SSOP

0

LMR821G-GTR

LMR821G-GTR

ROHM Semiconductor

IC OPAMP GP 1 CIRCUIT 5SSOP

1801

BD12734FVJ-E2

BD12734FVJ-E2

ROHM Semiconductor

IC OPAMP GP 4 CIRCUIT 14TSSOP

2241

BA2904YF-CE2

BA2904YF-CE2

ROHM Semiconductor

IC OPAMP GP 2 CIRCUIT 8SOP

2392

BA2904WF-E2

BA2904WF-E2

ROHM Semiconductor

IC OPAMP GP 2 CIRCUIT 8SOP

1646

BU7486FV-E2

BU7486FV-E2

ROHM Semiconductor

IC CMOS 2 CIRCUIT 8SSOPB

2041

LM2904F-E2

LM2904F-E2

ROHM Semiconductor

IC OPAMP GP 2 CIRCUIT 8SOP

2105

BA3131FS-E2

BA3131FS-E2

ROHM Semiconductor

IC AUDIO 2 CIRCUIT 20SSOPA

1263

BU7271G-TR

BU7271G-TR

ROHM Semiconductor

IC OPAMP GP 1 CIRCUIT 5SSOP

0

BA4558RFVM-TR

BA4558RFVM-TR

ROHM Semiconductor

IC OPAMP GP 2 CIRCUIT 8MSOP

3187

BA10358FV-E2

BA10358FV-E2

ROHM Semiconductor

IC OPAMP GP 2 CIRCUIT 8SSOPB

7

LM4559FVT-GE2

LM4559FVT-GE2

ROHM Semiconductor

IC OPAMP GP 2 CIRCUIT 8TSSOP

2942

LM358FV-GE2

LM358FV-GE2

ROHM Semiconductor

IC OPAMP GP 2 CIRCUIT 8SSOPB

2420

BD7541SG-TR

BD7541SG-TR

ROHM Semiconductor

IC OPAMP GP 1 CIRCUIT 5SSOP

5565

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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