Linear - Amplifiers - Instrumentation, OP Amps, Buffer Amps

Image Part Number Description / PDF Quantity Rfq
NJM3472V-TE1

NJM3472V-TE1

New Japan Radio (NJR)

IC OPAMP GP 2 CIRCUIT 8SSOP

0

NJM2747D

NJM2747D

New Japan Radio (NJR)

IC OPAMP GP 4 CIRCUIT 14DIP

0

NJM4556AV-TE2

NJM4556AV-TE2

New Japan Radio (NJR)

IC OPAMP GP 2 CIRCUIT 8SSOP

0

NJMOP2277FE-TE1

NJMOP2277FE-TE1

New Japan Radio (NJR)

LOW NOISE PRECISION OPAMP

0

NJMOP2277GR-TE1

NJMOP2277GR-TE1

New Japan Radio (NJR)

LOW NOISE PRECISION OPAMP

1975

NJM2068M-TE1

NJM2068M-TE1

New Japan Radio (NJR)

LOW-NOISE DUAL OPAMP

1586

NJM4580V-TE2

NJM4580V-TE2

New Japan Radio (NJR)

IC AUDIO 2 CIRCUIT 8SSOP

0

NJMOP277GR-TE1

NJMOP277GR-TE1

New Japan Radio (NJR)

LOW NOISE PRECISION OPAMP

0

NJU7095RB1-TE1#

NJU7095RB1-TE1#

New Japan Radio (NJR)

IC OPAMP GP 2 CIRCUIT 8TVSP

0

NJM4556AL

NJM4556AL

New Japan Radio (NJR)

IC OPAMP GP 2 CIRCUIT 8SIP

0

NJU7056F3-TE2

NJU7056F3-TE2

New Japan Radio (NJR)

IC CMOS 1 CIRCUIT SC88A

0

NJM4558L

NJM4558L

New Japan Radio (NJR)

IC OPAMP GP 2 CIRCUIT 8SIP

0

NJU7043V-TE1

NJU7043V-TE1

New Japan Radio (NJR)

IC CMOS 2 CIRCUIT 8SSOP

0

NJU7081R-TE1

NJU7081R-TE1

New Japan Radio (NJR)

IC AUDIO 1 CIRCUIT 8VSP

0

NJU7082BV-TE1

NJU7082BV-TE1

New Japan Radio (NJR)

IC AUDIO 2 CIRCUIT 8SSOP

0

NJM4562D

NJM4562D

New Japan Radio (NJR)

IC OPAMP GP 2 CIRCUIT 8DIP

0

NJM3403AM

NJM3403AM

New Japan Radio (NJR)

IC OPAMP GP 4 CIRCUIT 14DMP

0

NJU7096V-TE2

NJU7096V-TE2

New Japan Radio (NJR)

IC OPAMP GP 2 CIRCUIT 8SSOP

0

NJM084D

NJM084D

New Japan Radio (NJR)

IC OPAMP JFET 4 CIRCUIT 14DIP

0

NJM082BM

NJM082BM

New Japan Radio (NJR)

IC OPAMP JFET 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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