Linear - Amplifiers - Instrumentation, OP Amps, Buffer Amps

Image Part Number Description / PDF Quantity Rfq
NJU7094R-TE1#

NJU7094R-TE1#

New Japan Radio (NJR)

IC OPAMP GP 2 CIRCUIT 8VSP

0

NJM3472G-TE2

NJM3472G-TE2

New Japan Radio (NJR)

IC OPAMP GP 2 CIRCUIT 8SOP

190

NJU77000F-TE2

NJU77000F-TE2

New Japan Radio (NJR)

IC CMOS 1 CIRCUIT SOT23-5

0

NJM2904CM-TE2

NJM2904CM-TE2

New Japan Radio (NJR)

IC OPAMP GP 2 CIRCUIT 8DMP

0

NJU77002E-TE2

NJU77002E-TE2

New Japan Radio (NJR)

IC CMOS 2 CIRCUIT 8SOP

0

NJU7094R-TE1

NJU7094R-TE1

New Japan Radio (NJR)

IC OPAMP GP 2 CIRCUIT 8VSP

1617

NJM2747V-TE1

NJM2747V-TE1

New Japan Radio (NJR)

IC OPAMP GP 4 CIRCUIT 14SSOP

0

NJM2068D

NJM2068D

New Japan Radio (NJR)

IC OPAMP GP 2 CIRCUIT 8DIP

1365

NJM8080RB1-TE1

NJM8080RB1-TE1

New Japan Radio (NJR)

IC AUDIO 2 CIRCUIT 8TVSP

0

NJU7002M

NJU7002M

New Japan Radio (NJR)

IC OPAMP GP 2 CIRCUIT 8DMP

0

NJM072CG-TE2

NJM072CG-TE2

New Japan Radio (NJR)

IC OPAMP JFET 2 CIRCUIT 8SOP

2448

NJM2711F-TE1

NJM2711F-TE1

New Japan Radio (NJR)

IC OPAMP GP 1 CIRCUIT SOT23-5

0

NJM2717D

NJM2717D

New Japan Radio (NJR)

IC OPAMP GP 2 CIRCUIT 8DIP

0

NJM8512BE-TE1

NJM8512BE-TE1

New Japan Radio (NJR)

IC OPAMP JFET 2 CIRCUIT 8EMP

1960

NJM2100D

NJM2100D

New Japan Radio (NJR)

IC OPAMP GP 2 CIRCUIT 8DIP

0

NJU7095D#

NJU7095D#

New Japan Radio (NJR)

IC OPAMP GP 2 CIRCUIT 8DIP

0

NJM2745V-TE1

NJM2745V-TE1

New Japan Radio (NJR)

IC OPAMP GP 4 CIRCUIT 14SSOP

2000

NJM4741M

NJM4741M

New Japan Radio (NJR)

IC OPAMP GP 4 CIRCUIT 14DMP

1374

NJM8068G-TE2

NJM8068G-TE2

New Japan Radio (NJR)

IC OPAMP GP 2 CIRCUIT 8SOP

9

NJM2143R-TE1

NJM2143R-TE1

New Japan Radio (NJR)

IC OPAMP GP 2 CIRCUIT 8VSP

3815

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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