Linear - Amplifiers - Instrumentation, OP Amps, Buffer Amps

Image Part Number Description / PDF Quantity Rfq
NJM2114M

NJM2114M

New Japan Radio (NJR)

IC OPAMP GP 2 CIRCUIT 8DMP

0

NJM072BM-TE3

NJM072BM-TE3

New Japan Radio (NJR)

IC OPAMP JFET 2 CIRCUIT 8DMP

0

NJM4560MD

NJM4560MD

New Japan Radio (NJR)

IC OPAMP GP 2 CIRCUIT 8DMP

0

NJU7051D

NJU7051D

New Japan Radio (NJR)

IC OPAMP GP 1 CIRCUIT 8DIP

0

NJM2114M-TE3

NJM2114M-TE3

New Japan Radio (NJR)

IC OPAMP GP 2 CIRCUIT 8DMP

0

NJM318M

NJM318M

New Japan Radio (NJR)

IC OPAMP GP 1 CIRCUIT 8DMP

0

NJM082M

NJM082M

New Japan Radio (NJR)

IC OPAMP JFET 2 CIRCUIT 8DMP

0

NJU7092AF-TE1

NJU7092AF-TE1

New Japan Radio (NJR)

IC OPAMP GP 1 CIRCUIT SOT23-5

0

NJM2137M

NJM2137M

New Japan Radio (NJR)

IC OPAMP GP 2 CIRCUIT 8DMP

0

NJM4560E

NJM4560E

New Japan Radio (NJR)

IC OPAMP GP 2 CIRCUIT 8SOP

0

NJM2121M-TE1

NJM2121M-TE1

New Japan Radio (NJR)

IC OPAMP GP 2 CIRCUIT 8DMP

0

NJU7051V-TE1

NJU7051V-TE1

New Japan Radio (NJR)

IC OPAMP GP 1 CIRCUIT 8SSOP

0

NJM022BM-TE3

NJM022BM-TE3

New Japan Radio (NJR)

IC OPAMP GP 2 CIRCUIT 8DMP

0

NJM13404M

NJM13404M

New Japan Radio (NJR)

IC OPAMP GP 2 CIRCUIT 8DMP

0

NJM5534M-TE2

NJM5534M-TE2

New Japan Radio (NJR)

IC OPAMP GP 1 CIRCUIT 8DMP

0

NJM318E-TE2

NJM318E-TE2

New Japan Radio (NJR)

IC OPAMP GP 1 CIRCUIT 8SOP

0

NJM741M-TE1

NJM741M-TE1

New Japan Radio (NJR)

IC OPAMP GP 1 CIRCUIT 8DMP

0

NJM4560D

NJM4560D

New Japan Radio (NJR)

IC OPAMP GP 2 CIRCUIT 8DIP

0

NJM2138M

NJM2138M

New Japan Radio (NJR)

IC OPAMP GP 4 CIRCUIT 14DMP

0

NJM4560M-TE2

NJM4560M-TE2

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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