Linear - Amplifiers - Instrumentation, OP Amps, Buffer Amps

Image Part Number Description / PDF Quantity Rfq
NJM084D#

NJM084D#

New Japan Radio (NJR)

IC OPAMP JFET 4 CIRCUIT 14DIP

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NJM2122D

NJM2122D

New Japan Radio (NJR)

IC OPAMP GP 2 CIRCUIT 8DIP

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NJU7044V

NJU7044V

New Japan Radio (NJR)

IC OP AMP RRIO QUAD 14SSOP

0

NJM082D

NJM082D

New Japan Radio (NJR)

IC OPAMP JFET 2 CIRCUIT 8DIP

0

NJM2082M-TE2

NJM2082M-TE2

New Japan Radio (NJR)

IC OPAMP JFET 2 CIRCUIT 8DMP

0

NJM2082D

NJM2082D

New Japan Radio (NJR)

IC OPAMP JFET 2 CIRCUIT 8DIP

0

NJM2114DD

NJM2114DD

New Japan Radio (NJR)

IC OPAMP GP 2 CIRCUIT 8DIP

0

NJM2082M-TE3

NJM2082M-TE3

New Japan Radio (NJR)

IC OPAMP JFET 2 CIRCUIT 8DMP

0

NJM4560M-TE1

NJM4560M-TE1

New Japan Radio (NJR)

IC OPAMP GP 2 CIRCUIT 8DMP

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NJU7031D

NJU7031D

New Japan Radio (NJR)

IC OPAMP GP 1 CIRCUIT 8DIP

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NJM2120D

NJM2120D

New Japan Radio (NJR)

IC OPAMP GP 2 CIRCUIT 8DIP

0

NJM318M-TE3

NJM318M-TE3

New Japan Radio (NJR)

IC OPAMP GP 1 CIRCUIT 8DMP

0

NJM4562M

NJM4562M

New Japan Radio (NJR)

IC OPAMP GP 2 CIRCUIT 8DMP

0

NJM4559M-TE3

NJM4559M-TE3

New Japan Radio (NJR)

IC OPAMP GP 2 CIRCUIT 8DMP

0

NJM072MT-TE3

NJM072MT-TE3

New Japan Radio (NJR)

IC OPAMP JFET 2 CIRCUIT 8DMP

0

NJM022BM

NJM022BM

New Japan Radio (NJR)

IC OPAMP GP 2 CIRCUIT 8DMP

0

NJM074M#

NJM074M#

New Japan Radio (NJR)

IC OPAMP JFET 4 CIRCUIT 14DMP

0

NJU7096M

NJU7096M

New Japan Radio (NJR)

IC OPAMP GP 2 CIRCUIT 8DMP

0

NJU7022M

NJU7022M

New Japan Radio (NJR)

IC OPAMP GP 2 CIRCUIT 8DMP

0

NJU7072M

NJU7072M

New Japan Radio (NJR)

IC OPAMP GP 2 CIRCUIT 8DMP

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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