Linear - Amplifiers - Instrumentation, OP Amps, Buffer Amps

Image Part Number Description / PDF Quantity Rfq
NJU7021D

NJU7021D

New Japan Radio (NJR)

IC OPAMP GP 1 CIRCUIT 8DIP

25

NJM2122D#

NJM2122D#

New Japan Radio (NJR)

IC OPAMP GP 2 CIRCUIT 8DIP

0

NJU7082BV-TE1#

NJU7082BV-TE1#

New Japan Radio (NJR)

IC AUDIO 2 CIRCUIT 8SSOP

0

NJM3403AM#

NJM3403AM#

New Japan Radio (NJR)

IC OPAMP GP 4 CIRCUIT 14DMP

0

NJU7002D

NJU7002D

New Japan Radio (NJR)

IC OPAMP GP 2 CIRCUIT 8DIP

0

NJU7031M#

NJU7031M#

New Japan Radio (NJR)

IC OPAMP GP 1 CIRCUIT 8DMP

0

NJM4565E-TE2

NJM4565E-TE2

New Japan Radio (NJR)

IC OPAMP GP 2 CIRCUIT 8SOP

0

NJU7016M

NJU7016M

New Japan Radio (NJR)

IC OPAMP GP 2 CIRCUIT 8DMP

0

NJM2904D

NJM2904D

New Japan Radio (NJR)

IC OPAMP GP 2 CIRCUIT 8DIP

0

NJM2749M-TE1

NJM2749M-TE1

New Japan Radio (NJR)

IC OPAMP JFET 2 CIRCUIT 8DMP

0

NJM2059D

NJM2059D

New Japan Radio (NJR)

IC OPAMP GP 4 CIRCUIT 14DIP

0

NJU7093AF-TE1

NJU7093AF-TE1

New Japan Radio (NJR)

IC OPAMP GP 1 CIRCUIT SOT23-5

0

NJU7094RB1-TE1

NJU7094RB1-TE1

New Japan Radio (NJR)

IC OPAMP GP 2 CIRCUIT 8TVSP

216

NJM2904M

NJM2904M

New Japan Radio (NJR)

IC OPAMP GP 2 CIRCUIT 8DMP

2133

NJM2120M

NJM2120M

New Japan Radio (NJR)

IC OPAMP GP 2 CIRCUIT 8DMP

1180

NJM2748D

NJM2748D

New Japan Radio (NJR)

IC OPAMP JFET 1 CIRCUIT 8DIP

0

NJM3404AM

NJM3404AM

New Japan Radio (NJR)

IC OPAMP GP 2 CIRCUIT 8DMP

0

NJM2746RB1-TE1

NJM2746RB1-TE1

New Japan Radio (NJR)

IC OPAMP GP 2 CIRCUIT 8TVSP

0

NJU7094D#

NJU7094D#

New Japan Radio (NJR)

IC OPAMP GP 2 CIRCUIT 8DIP

0

NJM12902M

NJM12902M

New Japan Radio (NJR)

IC OPAMP GP 4 CIRCUIT 14DMP

1065

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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