Linear - Amplifiers - Instrumentation, OP Amps, Buffer Amps

Image Part Number Description / PDF Quantity Rfq
ALD2732PAL

ALD2732PAL

Advanced Linear Devices, Inc.

IC OPAMP GP 1 CIRCUIT 8DIP

0

ALD2702BPAL

ALD2702BPAL

Advanced Linear Devices, Inc.

IC OPAMP GP 2 CIRCUIT 8DIP

0

ALD2701BSAL

ALD2701BSAL

Advanced Linear Devices, Inc.

IC OPAMP GP 2 CIRCUIT 8SOIC

0

ALD2722SBL

ALD2722SBL

Advanced Linear Devices, Inc.

IC OPAMP GP 2 CIRCUIT 14SOIC

0

ALD1712PAL

ALD1712PAL

Advanced Linear Devices, Inc.

IC OPAMP GP 1 CIRCUIT 8DIP

0

ALD1704GPAL

ALD1704GPAL

Advanced Linear Devices, Inc.

IC OPAMP GP 1 CIRCUIT 8DIP

0

ALD1722GPAL

ALD1722GPAL

Advanced Linear Devices, Inc.

IC OPAMP GP 1 CIRCUIT 8DIP

0

ALD2722EPBL

ALD2722EPBL

Advanced Linear Devices, Inc.

IC OPAMP GP 2 CIRCUIT 14DIP

0

ALD2731ASAL

ALD2731ASAL

Advanced Linear Devices, Inc.

IC OPAMP GP 2 CIRCUIT 8SOIC

0

ALD1731APAL

ALD1731APAL

Advanced Linear Devices, Inc.

IC OPAMP GP 1 CIRCUIT 8DIP

0

ALD2702SAL

ALD2702SAL

Advanced Linear Devices, Inc.

IC OPAMP GP 2 CIRCUIT 8SOIC

0

ALD2731SAL

ALD2731SAL

Advanced Linear Devices, Inc.

IC OPAMP GP 2 CIRCUIT 8SOIC

0

ALD2701SAL

ALD2701SAL

Advanced Linear Devices, Inc.

IC OPAMP GP 2 CIRCUIT 8SOIC

0

ALD2724EPBL

ALD2724EPBL

Advanced Linear Devices, Inc.

IC OPAMP GP 2 CIRCUIT 14DIP

0

ALD4701BPBL

ALD4701BPBL

Advanced Linear Devices, Inc.

IC OPAMP GP 4 CIRCUIT 14DIP

0

ALD4702PBL

ALD4702PBL

Advanced Linear Devices, Inc.

IC OPAMP GP 4 CIRCUIT 14DIP

0

ALD1736ASAL

ALD1736ASAL

Advanced Linear Devices, Inc.

IC OPAMP GP 1 CIRCUIT 8SOIC

0

ALD1704BPAL

ALD1704BPAL

Advanced Linear Devices, Inc.

IC OPAMP GP 1 CIRCUIT 8DIP

0

ALD2736ASAL

ALD2736ASAL

Advanced Linear Devices, Inc.

IC OPAMP GP 1 CIRCUIT 8SOIC

0

ALD4702SBL

ALD4702SBL

Advanced Linear Devices, Inc.

IC OPAMP GP 4 CIRCUIT 14SOIC

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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