Linear - Amplifiers - Instrumentation, OP Amps, Buffer Amps

Image Part Number Description / PDF Quantity Rfq
NJM8080G-TE2

NJM8080G-TE2

New Japan Radio (NJR)

IC AUDIO 2 CIRCUIT 8SOP

0

NJM4580E

NJM4580E

New Japan Radio (NJR)

IC AUDIO 2 CIRCUIT 8EMP

0

NJM842R-TE1

NJM842R-TE1

New Japan Radio (NJR)

IC OPAMP GP 2 CIRCUIT 8VSP

0

NJM2717M-TE1

NJM2717M-TE1

New Japan Radio (NJR)

IC OPAMP GP 2 CIRCUIT 8DMP

0

NJM2172V-TE1

NJM2172V-TE1

New Japan Radio (NJR)

IC OPAMP GP 2 CIRCUIT 14SSOP

0

NJU7014D

NJU7014D

New Japan Radio (NJR)

IC OPAMP GP 2 CIRCUIT 8DIP

64

NJU7095R-TE1#

NJU7095R-TE1#

New Japan Radio (NJR)

IC OPAMP GP 2 CIRCUIT 8VSP

0

MUSES8820E

MUSES8820E

New Japan Radio (NJR)

IC AUDIO 2 CIRCUIT 8EMP

0

NJM2723E-TE1

NJM2723E-TE1

New Japan Radio (NJR)

IC OPAMP CFA 1 CIRCUIT 8EMP

0

NJU7094M

NJU7094M

New Japan Radio (NJR)

IC OPAMP GP 2 CIRCUIT 8DMP

0

MUSES8832E

MUSES8832E

New Japan Radio (NJR)

IC AUDIO 2 CIRCUIT 8SOP

0

NJM2740RB1-TE1

NJM2740RB1-TE1

New Japan Radio (NJR)

IC OPAMP GP 2 CIRCUIT 8TVSP

1625

NJM2712RB1-TE1

NJM2712RB1-TE1

New Japan Radio (NJR)

IC OPAMP GP 2 CIRCUIT 8TVSP

0

NJM2746E-TE1

NJM2746E-TE1

New Japan Radio (NJR)

IC OPAMP GP 2 CIRCUIT 8SOP

0

NJM072CAG-TE2

NJM072CAG-TE2

New Japan Radio (NJR)

IC OPAMP JFET 2 CIRCUIT 8SOP

0

NJU77550F3-TE1

NJU77550F3-TE1

New Japan Radio (NJR)

IC OPAMP GP 1 CIRCUIT SC88A

0

NJU7091AF-TE1

NJU7091AF-TE1

New Japan Radio (NJR)

IC OPAMP GP 1 CIRCUIT SOT23-5

92

NJU7077R-TE2

NJU7077R-TE2

New Japan Radio (NJR)

IC CMOS 2 CIRCUIT 8VSP

0

NJM2137M#

NJM2137M#

New Japan Radio (NJR)

IC OPAMP GP 2 CIRCUIT 8DMP

0

MUSES8920E

MUSES8920E

New Japan Radio (NJR)

IC OPAMP JFET 2 CIRCUIT 8SOP

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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