Linear - Amplifiers - Instrumentation, OP Amps, Buffer Amps

Image Part Number Description / PDF Quantity Rfq
LMR934F-GE2

LMR934F-GE2

ROHM Semiconductor

IC OPAMP GP 4 CIRCUIT 14SOP

2454

BA3472FVM-TR

BA3472FVM-TR

ROHM Semiconductor

IC OPAMP GP 2 CIRCUIT 8MSOP

3000

BU7291SG-TR

BU7291SG-TR

ROHM Semiconductor

IC OPAMP GP 1 CIRCUIT 5SSOP

3000

BA3474FVJ-E2

BA3474FVJ-E2

ROHM Semiconductor

IC OPAMP GP 4 CIRCUIT 14TSSOP

2020

LM358WPT

LM358WPT

ROHM Semiconductor

IC OPAMP GP 2 CIRCUIT 8TSSOP

0

BA4560RF-E2

BA4560RF-E2

ROHM Semiconductor

IC OPAMP GP 2 CIRCUIT 8SOP

8389

BU7442NUX-TR

BU7442NUX-TR

ROHM Semiconductor

IC OPAMP GP 2 CIRC VSON008X2030

7990

LMR324FVJ-E2

LMR324FVJ-E2

ROHM Semiconductor

IC OPAMP GP 4 CIRCUIT 14TSSOP

43

BU7444SF-E2

BU7444SF-E2

ROHM Semiconductor

IC CMOS 4 CIRCUIT 14SOP

2494

BU7442FVM-TR

BU7442FVM-TR

ROHM Semiconductor

IC OPAMP GP 2 CIRCUIT 8MSOP

896

LM2904DT

LM2904DT

ROHM Semiconductor

IC OPAMP GP 2 CIRCUIT 8SO

3698

BU7242YFVM-CGTR

BU7242YFVM-CGTR

ROHM Semiconductor

IC CMOS 2 CIRCUIT 8MSOP

1913

BU7244F-E2

BU7244F-E2

ROHM Semiconductor

IC CMOS 4 CIRCUIT 14SOP

2586

LM2904DGKR

LM2904DGKR

ROHM Semiconductor

IC OPAMP GP 2 CIRCUIT 8MSOP

1970

LM2904WPT

LM2904WPT

ROHM Semiconductor

IC OPAMP GP 2 CIRCUIT 8TSSOP

0

BU7262SF-E2

BU7262SF-E2

ROHM Semiconductor

IC OPAMP GP 2 CIRCUIT 8SOP

4292

BA2902F-E2

BA2902F-E2

ROHM Semiconductor

IC OPAMP GP 4 CIRCUIT 14SOP

2485

BU7242SFVM-TR

BU7242SFVM-TR

ROHM Semiconductor

IC OPAMP GP 2 CIRCUIT 8MSOP

2003

BU7244FV-E2

BU7244FV-E2

ROHM Semiconductor

IC CMOS 4 CIRCUIT 14SSOPB

1882

BU7242NUX-TR

BU7242NUX-TR

ROHM Semiconductor

IC OPAMP GP 2 CIRC VSON008X2030

2374

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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