Linear - Amplifiers - Instrumentation, OP Amps, Buffer Amps

Image Part Number Description / PDF Quantity Rfq
PA13A

PA13A

Apex Microtechnology

IC OPAMP POWER 1 CIRCUIT 12SIP

0

MP39CL

MP39CL

Apex Microtechnology

IC OPAMP POWER 1 CIRCUIT 30DIP

0

PA08M/883

PA08M/883

Apex Microtechnology

IC OPAMP POWER 1 CIRCUIT TO3-8

0

PA83A

PA83A

Apex Microtechnology

IC OPAMP POWER 1 CIRCUIT TO3-8

0

PA73M/883

PA73M/883

Apex Microtechnology

IC OPAMP POWER 1 CIRCUIT TO3-8

0

PB58

PB58

Apex Microtechnology

IC OPAMP POWER 1 CIRCUIT TO3-8

0

PA03A

PA03A

Apex Microtechnology

IC OPAMP POWER 1 CIRCUIT 12DIP

0

MP108FDA

MP108FDA

Apex Microtechnology

IC OPAMP POWER 1 CIRCUIT 34DIP

0

PA85

PA85

Apex Microtechnology

IC OPAMP POWER 1 CIRCUIT TO3-8

0

PA12M

PA12M

Apex Microtechnology

IC OPAMP POWER 1 CIRCUIT TO3-8

0

PA08V

PA08V

Apex Microtechnology

IC OPAMP POWER 1 CIRCUIT TO3-8

0

MP165KL

MP165KL

Apex Microtechnology

IC OPAMP POWER 1 CIRCUIT

0

PA51M-1/883

PA51M-1/883

Apex Microtechnology

IC OPAMP POWER 1 CIRCUIT TO3-8

0

PA98EEA

PA98EEA

Apex Microtechnology

IC OPAMP POWER 1 CIRCUIT 12SIP

0

PA99A

PA99A

Apex Microtechnology

IC OPAMP GP 1 CIRCUIT 12DIP

0

MP206KP

MP206KP

Apex Microtechnology

POWER AMPLIFIER 60V 21A

0

PA85M

PA85M

Apex Microtechnology

IC OPAMP POWER 1 CIRCUIT TO3-8

0

PA15AFU

PA15AFU

Apex Microtechnology

IC OPAMP POWER 1 CIRCUIT 10SIP

0

PA51B

PA51B

Apex Microtechnology

IC OPAMP GP 1 CIRCUIT TO3-8

0

PA95EC

PA95EC

Apex Microtechnology

IC OPAMP POWER 1 CIRCUIT

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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