Linear - Amplifiers - Instrumentation, OP Amps, Buffer Amps

Image Part Number Description / PDF Quantity Rfq
PA94

PA94

Apex Microtechnology

IC OPAMP POWER 1 CIRCUIT 8SIP

0

MP104KF

MP104KF

Apex Microtechnology

IC OPAMP GP 2 CIRCUIT MODULE

0

PA96CE

PA96CE

Apex Microtechnology

IC OPAMP POWER 1 CIRCUIT TO3-8

0

PA91EE

PA91EE

Apex Microtechnology

IC OPAMP POWER 1 CIRCUIT 12SIP

0

PA51

PA51

Apex Microtechnology

IC OPAMP POWER 1 CIRCUIT TO3-8

0

PA75CC

PA75CC

Apex Microtechnology

IC OPAMP POWER 2 CIRCUIT 7DDPAK

0

PA15FL

PA15FL

Apex Microtechnology

IC OPAMP POWER 1 CIRCUIT 10SIP

0

PA75CD

PA75CD

Apex Microtechnology

IC OPAMP POWER 2 CIRCUIT TO220-7

0

MP108FD

MP108FD

Apex Microtechnology

IC OPAMP POWER 1 CIRCUIT 34DIP

0

PA16EE

PA16EE

Apex Microtechnology

IC OPAMP POWER 1 CIRCUIT 12SIP

0

PB50

PB50

Apex Microtechnology

IC OPAMP POWER 1 CIRCUIT TO3-8

0

PA84M/883

PA84M/883

Apex Microtechnology

IC OPAMP POWER 1 CIRCUIT TO3-8

0

PA83

PA83

Apex Microtechnology

IC OPAMP POWER 1 CIRCUIT TO3-8

0

PA01

PA01

Apex Microtechnology

IC OPAMP POWER 1 CIRCUIT TO3-8

0

PA08M

PA08M

Apex Microtechnology

IC OPAMP POWER 1 CIRCUIT TO3-8

0

PA51A

PA51A

Apex Microtechnology

IC OPAMP POWER 1 CIRCUIT TO3-8

0

MP38CL

MP38CL

Apex Microtechnology

IC OPAMP POWER 1 CIRCUIT 30DIP

0

PA99

PA99

Apex Microtechnology

IC OPAMP GP 1 CIRCUIT 12DIP

0

PA02M/883

PA02M/883

Apex Microtechnology

IC OPAMP POWER 1 CIRCUIT TO3-8

0

PA12M/883

PA12M/883

Apex Microtechnology

IC OPAMP POWER 1 CIRCUIT TO3-8

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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