Linear - Amplifiers - Instrumentation, OP Amps, Buffer Amps

Image Part Number Description / PDF Quantity Rfq
BU7421G-TR

BU7421G-TR

ROHM Semiconductor

IC OPAMP GP 1 CIRCUIT 5SSOP

2960

BU7462SF-E2

BU7462SF-E2

ROHM Semiconductor

IC OPAMP GP 2 CIRCUIT 8SOP

0

BU7264SF-E2

BU7264SF-E2

ROHM Semiconductor

IC CMOS 4 CIRCUIT 14SOP

2440

LMR822FJ-GE2

LMR822FJ-GE2

ROHM Semiconductor

IC OPAMP GP 2 CIRCUIT SOP8J

2390

BA4560RFV-E2

BA4560RFV-E2

ROHM Semiconductor

IC OPAMP GP 2 CIRCUIT 8SSOPB

393

BU7255HFV-TR

BU7255HFV-TR

ROHM Semiconductor

IC OPAMP GP 1 CIRCUIT HVSOF5

586

BA2904YFVM-CTR

BA2904YFVM-CTR

ROHM Semiconductor

IC OPAMP GP 2 CIRCUIT 8MSOP

0

BA14741F-E2

BA14741F-E2

ROHM Semiconductor

IC OPAMP GP 4 CIRCUIT 14SOP

6498

BA2902FV-E2

BA2902FV-E2

ROHM Semiconductor

IC OPAMP GP 4 CIRCUIT 14SSOPB

3481

BU7486SFVM-TR

BU7486SFVM-TR

ROHM Semiconductor

IC CMOS 2 CIRCUIT 8MSOP

2827

LM358F-GE2

LM358F-GE2

ROHM Semiconductor

IC OPAMP GP 2 CIRCUIT 8SOP

2485

BA3474F-E2

BA3474F-E2

ROHM Semiconductor

IC OPAMP GP 4 CIRCUIT 14SOP

2094

BU7294F-E2

BU7294F-E2

ROHM Semiconductor

IC CMOS 4 CIRCUIT 14SOP

2461

BA2904SF-E2

BA2904SF-E2

ROHM Semiconductor

IC OPAMP GP 2 CIRCUIT 8SOP

2500

BA4558RFJ-GE2

BA4558RFJ-GE2

ROHM Semiconductor

IC OPAMP GP 2 CIRCUIT SOP8J

2462

BU7441G-TR

BU7441G-TR

ROHM Semiconductor

IC OPAMP GP 1 CIRCUIT 5SSOP

4910

BD12732FVJ-GE2

BD12732FVJ-GE2

ROHM Semiconductor

IC OPAMP GP 2 CIRCUIT 8TSSOP

2463

LMR344F-GE2

LMR344F-GE2

ROHM Semiconductor

IC CMOS 4 CIRCUIT 14SOP

2500

BU7241YG-CGTR

BU7241YG-CGTR

ROHM Semiconductor

IC CMOS 1 CIRCUIT 5SSOP

0

BA4580RFVT-E2

BA4580RFVT-E2

ROHM Semiconductor

IC OPAMP GP 2 CIRCUIT 8SSOPB

2567

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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