Linear - Amplifiers - Instrumentation, OP Amps, Buffer Amps

Image Part Number Description / PDF Quantity Rfq
NJMOP177GE-TE2

NJMOP177GE-TE2

New Japan Radio (NJR)

IC OPAMP GP 1 CIRCUIT 8SOP

0

NJU7047RB1-TE2

NJU7047RB1-TE2

New Japan Radio (NJR)

IC CMOS 2 CIRCUIT 8TVSP

0

NJU7062D

NJU7062D

New Japan Radio (NJR)

IC OPAMP GP 2 CIRCUIT 8DIP

0

NJM3403AD

NJM3403AD

New Japan Radio (NJR)

IC OPAMP GP 4 CIRCUIT 14DIP

0

NJM3474V-TE1

NJM3474V-TE1

New Japan Radio (NJR)

IC OPAMP GP 4 CIRCUIT 14SSOP

0

NJU7046F-TE2

NJU7046F-TE2

New Japan Radio (NJR)

IC CMOS 1 CIRCUIT SOT23-5

0

NJM2902M

NJM2902M

New Japan Radio (NJR)

IC OPAMP GP 4 CIRCUIT 14DMP

0

NJU7031D#

NJU7031D#

New Japan Radio (NJR)

IC OPAMP GP 1 CIRCUIT 8DIP

0

NJU7048V-TE2

NJU7048V-TE2

New Japan Radio (NJR)

IC CMOS 4 CIRCUIT 14SSOP

1932

NJU7027RB1-TE2

NJU7027RB1-TE2

New Japan Radio (NJR)

IC CMOS 2 CIRCUIT 8TVSP

0

NJM12902M#

NJM12902M#

New Japan Radio (NJR)

IC OPAMP GP 4 CIRCUIT 14DMP

0

NJU7056F-TE1

NJU7056F-TE1

New Japan Radio (NJR)

IC CMOS 1 CIRCUIT SOT23-5

0

NJM844G-TE2

NJM844G-TE2

New Japan Radio (NJR)

IC OPAMP GP 4 CIRCUIT 14SOP

2203

NJM2794RB2-TE1

NJM2794RB2-TE1

New Japan Radio (NJR)

IC OPAMP ISOLATION 2 CIRC 10TVSP

0

MUSES03

MUSES03

New Japan Radio (NJR)

IC OPAMP JFET 1 CIRCUIT 8DIP

0

NJU7061D#

NJU7061D#

New Japan Radio (NJR)

IC OPAMP GP 1 CIRCUIT 8DIP

0

NJM8801E

NJM8801E

New Japan Radio (NJR)

IC OPAMP GP 2 CIRCUIT 8SOP

0

NJU7004M

NJU7004M

New Japan Radio (NJR)

IC OPAMP GP 4 CIRCUIT 14DMP

234

NJM4580D

NJM4580D

New Japan Radio (NJR)

IC AUDIO 2 CIRCUIT 8DIP

2328

NJM8532RB1-TE1

NJM8532RB1-TE1

New Japan Radio (NJR)

IC OPAMP GP 2 CIRCUIT 8TVSP

1923

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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