Linear - Amplifiers - Instrumentation, OP Amps, Buffer Amps

Image Part Number Description / PDF Quantity Rfq
BU7485G-TR

BU7485G-TR

ROHM Semiconductor

IC OPAMP GP 1 CIRCUIT 5SSOP

1253

BD3181FVM-TR

BD3181FVM-TR

ROHM Semiconductor

IC CURR SENSE 1 CIRCUIT 8MSOP

0

BA10324AFJ-GE2

BA10324AFJ-GE2

ROHM Semiconductor

IC OPAMP GP 4 CIRCUIT 14SOPJ

1429

BA2902YF-LBH2

BA2902YF-LBH2

ROHM Semiconductor

IC OPAMP GP 4 CIRCUIT 14SOP

250

LMR344FVJ-E2

LMR344FVJ-E2

ROHM Semiconductor

IC CMOS 4 CIRCUIT 14TSSOP

2416

BA3474RFV-E2

BA3474RFV-E2

ROHM Semiconductor

IC OPAMP GP 4 CIRCUIT 14SSOPB

2320

TLR342F-GE2

TLR342F-GE2

ROHM Semiconductor

IC CMOS 2 CIRCUIT 8SOP

7500

BU7266SF-E2

BU7266SF-E2

ROHM Semiconductor

IC CMOS 2 CIRCUIT 8SOP

1782

BA4560

BA4560

ROHM Semiconductor

IC OPAMP GP 2 CIRCUIT 8DIP

0

BA3472WFV-CE2

BA3472WFV-CE2

ROHM Semiconductor

IC OPAMP GP 2 CIRCUIT 8SSOPB

2410

BA3472FJ-GE2

BA3472FJ-GE2

ROHM Semiconductor

IC OPAMP GP 2 CIRCUIT SOP8J

1958

BD3180FV-E2

BD3180FV-E2

ROHM Semiconductor

IC CURR SENSE 1 CIRCUIT 8SSOP

0

LMR342F-GE2

LMR342F-GE2

ROHM Semiconductor

IC OPAMP GP 2 CIRCUIT 8SOP

2443

BU7481SG-TR

BU7481SG-TR

ROHM Semiconductor

IC OPAMP GP 1 CIRCUIT 5SSOP

0

BU7262SFVM-TR

BU7262SFVM-TR

ROHM Semiconductor

IC OPAMP GP 2 CIRCUIT 8MSOP

4710

BU7462NUX-TR

BU7462NUX-TR

ROHM Semiconductor

IC OPAMP GP 2 CIRC VSON008X2030

7925

LMR324FV-GE2

LMR324FV-GE2

ROHM Semiconductor

IC OPAMP GP 4 CIRCUIT 14SSOPB

2360

BA2115F-E2

BA2115F-E2

ROHM Semiconductor

IC OPAMP GP 2 CIRCUIT 8SOP

3309

BA4584FV-E2

BA4584FV-E2

ROHM Semiconductor

IC OPAMP GP 4 CIRCUIT 14SSOPB

839

BD7542SF-E2

BD7542SF-E2

ROHM Semiconductor

IC OPAMP GP 2 CIRCUIT 8SOP

4720

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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