Linear - Amplifiers - Instrumentation, OP Amps, Buffer Amps

Image Part Number Description / PDF Quantity Rfq
MC33072PG

MC33072PG

Sanyo Semiconductor/ON Semiconductor

IC OPAMP GP 2 CIRCUIT 8DIP

0

KA324DTF

KA324DTF

Sanyo Semiconductor/ON Semiconductor

IC OPAMP GP 4 CIRCUIT 14SOP

0

MC33074APG

MC33074APG

Sanyo Semiconductor/ON Semiconductor

IC OPAMP GP 4 CIRCUIT 14DIP

0

LM358DMR2

LM358DMR2

Sanyo Semiconductor/ON Semiconductor

IC OPAMP GP 2 CIRCUIT MICRO8

0

KA2902D

KA2902D

Sanyo Semiconductor/ON Semiconductor

IC OPAMP GP 4 CIRCUIT 14SOP

0

KA258D

KA258D

Sanyo Semiconductor/ON Semiconductor

IC OPAMP GP 2 CIRCUIT 8SOIC

0

SC258NG

SC258NG

Sanyo Semiconductor/ON Semiconductor

IC OPAMP 8DIP

0

LM741CN

LM741CN

Sanyo Semiconductor/ON Semiconductor

IC OPAMP GP 1 CIRCUIT 8DIP

0

SE5230D

SE5230D

Sanyo Semiconductor/ON Semiconductor

IC OPAMP GP 1 CIRCUIT 8SOIC

0

SE5534ANG

SE5534ANG

Sanyo Semiconductor/ON Semiconductor

IC OPAMP GP 1 CIRCUIT 8DIP

0

KA741

KA741

Sanyo Semiconductor/ON Semiconductor

IC OPAMP GP 1 CIRCUIT 8DIP

0

LM258DMR2

LM258DMR2

Sanyo Semiconductor/ON Semiconductor

IC OPAMP GP 2 CIRCUIT MICRO8

0

LM741CM

LM741CM

Sanyo Semiconductor/ON Semiconductor

IC OPAMP GP 1 CIRCUIT 8SOIC

0

MC33074ADTBG

MC33074ADTBG

Sanyo Semiconductor/ON Semiconductor

IC OPAMP GP 4 CIRCUIT 14TSSOP

0

L272D2

L272D2

Sanyo Semiconductor/ON Semiconductor

IC OPAMP GP 2 CIRCUIT 16SOP

0

MC33502DG

MC33502DG

Sanyo Semiconductor/ON Semiconductor

IC OPAMP GP 2 CIRCUIT 8SOIC

0

MC33171PG

MC33171PG

Sanyo Semiconductor/ON Semiconductor

IC OPAMP GP 1 CIRCUIT 8DIP

0

NCV33172DR2

NCV33172DR2

Sanyo Semiconductor/ON Semiconductor

IC OPAMP GP 2 CIRCUIT 8SOIC

0

MC33274APG

MC33274APG

Sanyo Semiconductor/ON Semiconductor

IC OPAMP GP 4 CIRCUIT 14DIP

0

KA1458D

KA1458D

Sanyo Semiconductor/ON Semiconductor

IC OPAMP GP 2 CIRCUIT 8SOIC

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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