Linear - Amplifiers - Instrumentation, OP Amps, Buffer Amps

Image Part Number Description / PDF Quantity Rfq
BU7465HFV-TR

BU7465HFV-TR

ROHM Semiconductor

IC OPAMP GP 1 CIRCUIT HVSOF5

4755

BU7275SHFV-TR

BU7275SHFV-TR

ROHM Semiconductor

IC OPAMP GP 1 CIRCUIT HVSOF5

0

BA3404F-E2

BA3404F-E2

ROHM Semiconductor

IC OPAMP GP 2 CIRCUIT 8SOP

0

BD7562FVM-TR

BD7562FVM-TR

ROHM Semiconductor

IC OPAMP GP 2 CIRCUIT 8MSOP

2338

BA82902YFV-CE2

BA82902YFV-CE2

ROHM Semiconductor

IC OPAMP GP 2 CIRCUIT 14SSOPB

2381

BA4564WFV-E2

BA4564WFV-E2

ROHM Semiconductor

IC OPAMP GP 4 CIRCUIT 14SSOPB

2380

BA4558FVM-GTR

BA4558FVM-GTR

ROHM Semiconductor

IC OPAMP GP 2 CIRCUIT 8MSOP

569

BA4560RFJ-GE2

BA4560RFJ-GE2

ROHM Semiconductor

IC OPAMP GP 2 CIRCUIT SOP8J

2420

BU7205HFV-TR

BU7205HFV-TR

ROHM Semiconductor

IC OPAMP GP 1 CIRCUIT HVSOF5

3000

LM2904FV-E2

LM2904FV-E2

ROHM Semiconductor

IC OPAMP GP 2 CIRCUIT 8SSOPB

2260

BU7465SHFV-TR

BU7465SHFV-TR

ROHM Semiconductor

IC OPAMP GP 1 CIRCUIT HVSOF5

5973

LMR358FVT-GE2

LMR358FVT-GE2

ROHM Semiconductor

IC OPAMP GP 2 CIRCUIT 8TSSOP

11

LMR822FV-GE2

LMR822FV-GE2

ROHM Semiconductor

IC OPAMP GP 2 CIRCUIT 8SSOPB

2440

BU7266SFV-E2

BU7266SFV-E2

ROHM Semiconductor

IC CMOS 2 CIRCUIT 8SSOPB

0

BU7445HFV-TR

BU7445HFV-TR

ROHM Semiconductor

IC OPAMP GP 1 CIRCUIT HVSOF5

305

BA4558F-E2

BA4558F-E2

ROHM Semiconductor

IC OPAMP GP 2 CIRCUIT 8SOP

1085

BU7442SF-E2

BU7442SF-E2

ROHM Semiconductor

IC OPAMP GP 2 CIRCUIT 8SOP

4965

BA4510FVM-GTR

BA4510FVM-GTR

ROHM Semiconductor

IC OPAMP GP 2 CIRCUIT 8MSOP

2753

BA10324AF-E2

BA10324AF-E2

ROHM Semiconductor

IC OPAMP GP 4 CIRCUIT 14SOP

2498

BD7541G-TR

BD7541G-TR

ROHM Semiconductor

IC OPAMP GP 1 CIRCUIT 5SSOP

4917

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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