Linear - Amplifiers - Instrumentation, OP Amps, Buffer Amps

Image Part Number Description / PDF Quantity Rfq
PA05

PA05

Apex Microtechnology

IC OPAMP POWER 1 CIRCUIT 12DIP

0

PA92

PA92

Apex Microtechnology

IC OPAMP POWER 1 CIRCUIT 12SIP

0

PA98A

PA98A

Apex Microtechnology

IC OPAMP POWER 1 CIRCUIT 12SIP

0

PA10M/883

PA10M/883

Apex Microtechnology

IC OPAMP POWER 1 CIRCUIT TO3-8

0

PA73M

PA73M

Apex Microtechnology

IC OPAMP POWER 1 CIRCUIT TO3-8

0

MP39CLA

MP39CLA

Apex Microtechnology

IC OPAMP POWER 1 CIRCUIT 30DIP

0

PA194GN

PA194GN

Apex Microtechnology

IC OPAMP POWER 1 CIRCUIT 8PWRSIP

0

MP103FC

MP103FC

Apex Microtechnology

IC OPAMP POWER 2 CIRCUIT 42DIP

0

PA12

PA12

Apex Microtechnology

IC OPAMP POWER 1 CIRCUIT TO3-8

0

PA13EEA

PA13EEA

Apex Microtechnology

IC OPAMP POWER 1 CIRCUIT 12SIP

0

PA164PQ

PA164PQ

Apex Microtechnology

IC OPAMP POWER 1 CIRCUIT 52QFP

0

PA51M

PA51M

Apex Microtechnology

IC OPAMP POWER 1 CIRCUIT TO3-8

0

PA98EE

PA98EE

Apex Microtechnology

IC OPAMP POWER 1 CIRCUIT 12SIP

0

PA07A

PA07A

Apex Microtechnology

IC OPAMP POWER 1 CIRCUIT TO3-8

0

PA50A

PA50A

Apex Microtechnology

IC OPAMP POWER 1 CIRCUIT 12DIP

0

PA90

PA90

Apex Microtechnology

IC OPAMP POWER 1 CIRCUIT 12SIP

0

PA75CX

PA75CX

Apex Microtechnology

IC OPAMP POWER 2 CIRCUIT TO220-7

0

PA15FU

PA15FU

Apex Microtechnology

IC OPAMP POWER 1 CIRCUIT 10SIP

0

PA341DW

PA341DW

Apex Microtechnology

IC OPAMP POWER 1 CIRCUIT 10SIP

0

PA81J

PA81J

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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