Linear - Amplifiers - Instrumentation, OP Amps, Buffer Amps

Image Part Number Description / PDF Quantity Rfq
BA2904HFVM-CTR

BA2904HFVM-CTR

ROHM Semiconductor

IC OPAMP GP 2 CIRCUIT 8MSOP

2209

BA4560FJ-GE2

BA4560FJ-GE2

ROHM Semiconductor

IC OPAMP GP 2 CIRCUIT SOP8J

124

BA3472RFVM-TR

BA3472RFVM-TR

ROHM Semiconductor

IC OPAMP GP 2 CIRCUIT 8MSOP

2905

LMR358FVJ-GE2

LMR358FVJ-GE2

ROHM Semiconductor

IC OPAMP GP 2 CIRCUIT 8TSSOP

1278

BU7266FV-E2

BU7266FV-E2

ROHM Semiconductor

IC CMOS 2 CIRCUIT 8SSOPB

318

BU7262SNUX-TR

BU7262SNUX-TR

ROHM Semiconductor

IC OPAMP GP 2 CIRC VSON008X2030

9937

BA4560RFVT-E2

BA4560RFVT-E2

ROHM Semiconductor

IC OPAMP GP 2 CIRCUIT 8TSSOP

0

BA2902YFV-MGE2

BA2902YFV-MGE2

ROHM Semiconductor

IC OPAMP GP 4 CIRCUIT 14SSOPB

2480

LM4565FVM-GTR

LM4565FVM-GTR

ROHM Semiconductor

IC OPAMP GP 2 CIRCUIT 8MSOP

861

BA4510F-E2

BA4510F-E2

ROHM Semiconductor

IC OPAMP GP 2 CIRCUIT 8SOP

3310

BU7421SG-TR

BU7421SG-TR

ROHM Semiconductor

IC CMOS 1 CIRCUIT 5SSOP

5359

LM4565FVJ-GE2

LM4565FVJ-GE2

ROHM Semiconductor

IC OPAMP GP 2 CIRCUIT 8TSSOP

2491

LMR324F-GE2

LMR324F-GE2

ROHM Semiconductor

IC OPAMP GP 4 CIRCUIT 14SOP

2490

LMR342FVT-GE2

LMR342FVT-GE2

ROHM Semiconductor

IC OPAMP GP 2 CIRCUIT 8TSSOP

2980

BA10324AFV-E2

BA10324AFV-E2

ROHM Semiconductor

IC OPAMP GP 4 CIRCUIT 14SSOPB

222

BA8522RFV-E2

BA8522RFV-E2

ROHM Semiconductor

IC OPAMP GP 2 CIRCUIT 8SSOPB

0

BU7265SG-TR

BU7265SG-TR

ROHM Semiconductor

IC OPAMP GP 1 CIRCUIT 5SSOP

7922

BA4558RFV-E2

BA4558RFV-E2

ROHM Semiconductor

IC OPAMP GP 2 CIRCUIT 8SSOPB

2500

BA82902YF-CE2

BA82902YF-CE2

ROHM Semiconductor

IC OPAMP GP 2 CIRCUIT 14SOP

2416

LMR931G-GTR

LMR931G-GTR

ROHM Semiconductor

IC OPAMP GP 1 CIRCUIT 5SSOP

0

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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