Linear - Amplifiers - Instrumentation, OP Amps, Buffer Amps

Image Part Number Description / PDF Quantity Rfq
PA162DK

PA162DK

Apex Microtechnology

IC OPAMP GP 4 CIRCUIT 20PSOP

0

PA441DW

PA441DW

Apex Microtechnology

IC OPAMP GP 1 CIRCUIT 10SIP

5

PA10A

PA10A

Apex Microtechnology

IC OPAMP POWER 1 CIRCUIT TO3-8

0

PA51M/883

PA51M/883

Apex Microtechnology

IC OPAMP POWER 1 CIRCUIT TO3-8

0

PA04

PA04

Apex Microtechnology

IC OPAMP POWER 1 CIRCUIT 12DIP

0

PA10

PA10

Apex Microtechnology

IC OPAMP POWER 1 CIRCUIT TO3-8

0

PA341CE

PA341CE

Apex Microtechnology

IC OPAMP POWER 1 CIRCUIT TO3-8

0

PA52

PA52

Apex Microtechnology

IC OPAMP POWER 1 CIRCUIT 12DIP

0

PA79DK

PA79DK

Apex Microtechnology

IC OPAMP POWER 2 CIRCUIT 20PSOP

0

PA84S

PA84S

Apex Microtechnology

IC OPAMP POWER 1 CIRCUIT TO3-8

0

PA83M/883

PA83M/883

Apex Microtechnology

IC OPAMP POWER 1 CIRCUIT TO3-8

0

PB63DP

PB63DP

Apex Microtechnology

IC OPAMP POWER 2 CIRC 12PWRSIP

0

PA93

PA93

Apex Microtechnology

IC OPAMP POWER 1 CIRCUIT 12SIP

0

PA02

PA02

Apex Microtechnology

IC OPAMP POWER 1 CIRCUIT TO3-8

0

PA13

PA13

Apex Microtechnology

IC OPAMP POWER 1 CIRCUIT 12SIP

0

PA04A

PA04A

Apex Microtechnology

IC OPAMP POWER 1 CIRCUIT 12DIP

0

MP38CLA

MP38CLA

Apex Microtechnology

IC OPAMP POWER 1 CIRCUIT 30DIP

0

PA74A

PA74A

Apex Microtechnology

IC OPAMP POWER 2 CIRCUIT TO3-8

0

PA340CC

PA340CC

Apex Microtechnology

IC OPAMP POWER 1 CIRCUIT DDPAK-7

0

PA88

PA88

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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