Linear - Amplifiers - Instrumentation, OP Amps, Buffer Amps

Image Part Number Description / PDF Quantity Rfq
MUSES8820D

MUSES8820D

New Japan Radio (NJR)

IC AUDIO 2 CIRCUIT 8DIP

0

NJM2737RB1-TE1#

NJM2737RB1-TE1#

New Japan Radio (NJR)

IC OPAMP GP 2 CIRCUIT 8TVSP

0

NJU77004V-TE1

NJU77004V-TE1

New Japan Radio (NJR)

IC CMOS 4 CIRCUIT 14SSOP

0

NJM2058V-TE1

NJM2058V-TE1

New Japan Radio (NJR)

IC OPAMP GP 4 CIRCUIT 14SSOP

0

NJM2737D

NJM2737D

New Japan Radio (NJR)

IC OPAMP GP 2 CIRCUIT 8DIP

0

NJU7074D#

NJU7074D#

New Japan Radio (NJR)

IC OPAMP GP 4 CIRCUIT 14DIP

0

NJU7043D

NJU7043D

New Japan Radio (NJR)

IC CMOS 2 CIRCUIT 8DIP

0

MUSES02

MUSES02

New Japan Radio (NJR)

IC AUDIO 2 CIRCUIT 8DIP

33

NJU7001D

NJU7001D

New Japan Radio (NJR)

IC OPAMP GP 1 CIRCUIT 8DIP

0

NJU7022D

NJU7022D

New Japan Radio (NJR)

IC OPAMP GP 2 CIRCUIT 8DIP

0

NJM2749AM

NJM2749AM

New Japan Radio (NJR)

IC OPAMP GP 2 CIRCUIT 8DMP

0

NJU7014M

NJU7014M

New Japan Radio (NJR)

IC OPAMP GP 2 CIRCUIT 8DMP

0

NJM4558M

NJM4558M

New Japan Radio (NJR)

IC OPAMP GP 2 CIRCUIT 8DMP

0

NJM8513BV-TE1

NJM8513BV-TE1

New Japan Radio (NJR)

IC OPAMP JFET 4 CIRCUIT 14SSOP

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NJU77001F-TE2

NJU77001F-TE2

New Japan Radio (NJR)

IC CMOS 1 CIRCUIT SOT23-5

0

NJU7006F-TE1#

NJU7006F-TE1#

New Japan Radio (NJR)

IC OPAMP GP 1 CIRCUIT SOT23-5

0

NJU7054D

NJU7054D

New Japan Radio (NJR)

IC OPAMP GP 4 CIRCUIT 14DIP

0

NJMOP1772E-TE2

NJMOP1772E-TE2

New Japan Radio (NJR)

IC OPAMP GP 1 CIRCUIT 8SOP

0

NJM12902D1

NJM12902D1

New Japan Radio (NJR)

IC OPAMP GP 4 CIRCUIT 14DIP

0

NJM8202M-TE1

NJM8202M-TE1

New Japan Radio (NJR)

IC OPAMP GP 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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