Linear - Amplifiers - Instrumentation, OP Amps, Buffer Amps

Image Part Number Description / PDF Quantity Rfq
NJM072BL

NJM072BL

New Japan Radio (NJR)

IC OPAMP JFET 2 CIRCUIT 8SSOP

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NJM072BV-TE2

NJM072BV-TE2

New Japan Radio (NJR)

IC OPAMP JFET 2 CIRCUIT 8SSOP

0

NJU7044M-TE1

NJU7044M-TE1

New Japan Radio (NJR)

IC OP AMP RRIO QUAD 14DMP

0

NJM064M-TE2

NJM064M-TE2

New Japan Radio (NJR)

IC OPAMP JFET 4 CIRCUIT 14DMP

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NJM2082L

NJM2082L

New Japan Radio (NJR)

IC OPAMP JFET 2 CIRCUIT 8SSOP

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NJM4741M-TE1

NJM4741M-TE1

New Japan Radio (NJR)

IC OPAMP GP 4 CIRCUIT 14DMP

0

NJM2123M-TE1

NJM2123M-TE1

New Japan Radio (NJR)

IC OPAMP GP 2 CIRCUIT 16DMP

0

NJM13600M-TE2

NJM13600M-TE2

New Japan Radio (NJR)

IC OPAMP TRANSCOND 2 CIRC 16DMP

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NJM084M-TE2

NJM084M-TE2

New Japan Radio (NJR)

IC OPAMP JFET 4 CIRCUIT 14DMP

0

NJM084M-TE1

NJM084M-TE1

New Japan Radio (NJR)

IC OPAMP JFET 4 CIRCUIT 14DMP

0

NJM082L

NJM082L

New Japan Radio (NJR)

IC OPAMP JFET 2 CIRCUIT 8SSOP

0

NJM4560L

NJM4560L

New Japan Radio (NJR)

IC OPAMP GP 2 CIRCUIT 8SIP

0

NJM064M

NJM064M

New Japan Radio (NJR)

IC OPAMP JFET 4 CIRCUIT 14DMP

0

NJM2082V-TE2

NJM2082V-TE2

New Japan Radio (NJR)

IC OPAMP JFET 2 CIRCUIT 8SSOP

0

NJM2082V-TE1

NJM2082V-TE1

New Japan Radio (NJR)

IC OPAMP JFET 2 CIRCUIT 8SSOP

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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