Linear - Amplifiers - Instrumentation, OP Amps, Buffer Amps

Image Part Number Description / PDF Quantity Rfq
NJM2121M

NJM2121M

New Japan Radio (NJR)

IC OPAMP GP 2 CIRCUIT 8DMP

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NJM2121D

NJM2121D

New Japan Radio (NJR)

IC OPAMP GP 2 CIRCUIT 8DIP

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NJU7008F2

NJU7008F2

New Japan Radio (NJR)

IC OPAMP GP 1 CIRCUIT SC88A

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NJM072BE

NJM072BE

New Japan Radio (NJR)

IC OPAMP JFET 2 CIRCUIT 8SOP

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NJM072M-TE1

NJM072M-TE1

New Japan Radio (NJR)

IC OPAMP JFET 2 CIRCUIT 8DMP

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NJM082D#

NJM082D#

New Japan Radio (NJR)

IC OPAMP JFET 2 CIRCUIT 8DIP

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NJM2082MD

NJM2082MD

New Japan Radio (NJR)

IC OPAMP JFET 2 CIRCUIT 8DMP

0

NJU7095RB1-TE1

NJU7095RB1-TE1

New Japan Radio (NJR)

IC OPAMP GP 2 CIRCUIT 8TVSP

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NJM5534M

NJM5534M

New Japan Radio (NJR)

IC OPAMP GP 1 CIRCUIT 8DMP

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NJM13600D

NJM13600D

New Japan Radio (NJR)

IC OPAMP TRANSCOND 2 CIRC 16DIP

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NJM2114D

NJM2114D

New Japan Radio (NJR)

IC OPAMP GP 2 CIRCUIT 8DIP

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NJM4559M-TE1

NJM4559M-TE1

New Japan Radio (NJR)

IC OPAMP GP 2 CIRCUIT 8DMP

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NJM082BM-TE2

NJM082BM-TE2

New Japan Radio (NJR)

IC OPAMP JFET 2 CIRCUIT 8DMP

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NJM4562M#

NJM4562M#

New Japan Radio (NJR)

IC OPAMP GP 2 CIRCUIT 8DMP

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NJM074M

NJM074M

New Japan Radio (NJR)

IC OPAMP JFET 4 CIRCUIT 14DMP

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NJM4560MD-TE2

NJM4560MD-TE2

New Japan Radio (NJR)

IC OPAMP GP 2 CIRCUIT 8DMP

0

NJM2737RB1-TE1

NJM2737RB1-TE1

New Japan Radio (NJR)

IC OPAMP GP 2 CIRCUIT 8TVSP

0

NJM084V-TE1

NJM084V-TE1

New Japan Radio (NJR)

IC OPAMP JFET 4 CIRCUIT 14SSOP

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NJM2082DD

NJM2082DD

New Japan Radio (NJR)

IC OPAMP JFET 2 CIRCUIT 8DIP

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NJM072D

NJM072D

New Japan Radio (NJR)

IC OPAMP JFET 2 CIRCUIT 8DIP

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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