Linear - Amplifiers - Instrumentation, OP Amps, Buffer Amps

Image Part Number Description / PDF Quantity Rfq
TS27M4CPT

TS27M4CPT

STMicroelectronics

IC OPAMP GP 4 CIRCUIT 14TSSOP

0

MC3303DT

MC3303DT

STMicroelectronics

IC OPAMP GP 4 CIRCUIT 14SO

4853

LM2902YPT

LM2902YPT

STMicroelectronics

IC OPAMP GP 4 CIRCUIT 14TSSOP

456

TSV620ICT

TSV620ICT

STMicroelectronics

IC OPAMP GP 1 CIRCUIT SC70-6

0

TS27L4CDT

TS27L4CDT

STMicroelectronics

IC OPAMP GP 4 CIRCUIT 14SO

200

TS1872IPT

TS1872IPT

STMicroelectronics

IC OPAMP GP 2 CIRCUIT 8TSSOP

0

TJM4558CDT

TJM4558CDT

STMicroelectronics

IC OPAMP GP 2 CIRCUIT 8SO

2474

TSV612IST

TSV612IST

STMicroelectronics

IC OPAMP GP 2 CIRCUIT 8MINISO

0

TSX564IPT

TSX564IPT

STMicroelectronics

IC OPAMP GP 4 CIRCUIT 14TSSOP

0

TSX7192IYDT

TSX7192IYDT

STMicroelectronics

IC OPAMP GP 2 CIRCUIT 8SO

0

TSX7191AILT

TSX7191AILT

STMicroelectronics

IC OPAMP GP 1 CIRCUIT SOT23-5

7343

TSX631AIYLT

TSX631AIYLT

STMicroelectronics

IC OPAMP GP 1 CIRCUIT SOT23-5

0

TSC2010IYDT

TSC2010IYDT

STMicroelectronics

HIGH VOLTAGE, PRECISION, BIDIREC

0

LMV822AIYST

LMV822AIYST

STMicroelectronics

IC OPAMP GP 2 CIRCUIT 8MINISO

0

TS507ILT

TS507ILT

STMicroelectronics

IC OPAMP GP 1 CIRCUIT SOT23-5

272

TS274IDT

TS274IDT

STMicroelectronics

IC OPAMP GP 4 CIRCUIT 14SO

0

LF351DT

LF351DT

STMicroelectronics

IC OPAMP JFET 1 CIRCUIT 8SO

7528

TSX561AILT

TSX561AILT

STMicroelectronics

IC OPAMP GP 1 CIRCUIT SOT23-5

2331

LM258QT

LM258QT

STMicroelectronics

IC OPAMP GP 2 CIRCUIT 8DFN

3011

TL082IPT

TL082IPT

STMicroelectronics

IC OPAMP JFET 2 CIRCUIT 8TSSOP

9977

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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