Linear - Amplifiers - Instrumentation, OP Amps, Buffer Amps

Image Part Number Description / PDF Quantity Rfq
TSX711ILT

TSX711ILT

STMicroelectronics

IC OPAMP GP 1 CIRCUIT SOT23-5

27485

TSV625IPT

TSV625IPT

STMicroelectronics

IC OPAMP GP 4 CIRCUIT 16TSSOP

0

TSX922IYST

TSX922IYST

STMicroelectronics

IC OPAMP GP 2 CIRCUIT 8MINISO

480

LM2904WYPT

LM2904WYPT

STMicroelectronics

IC OPAMP GP 2 CIRCUIT 8TSSOP

7987

LM224DT

LM224DT

STMicroelectronics

IC OPAMP GP 4 CIRCUIT 14SO

795

TSX922IYDT

TSX922IYDT

STMicroelectronics

IC OPAMP GP 2 CIRCUIT 8SO

0

TSB712AIYDT

TSB712AIYDT

STMicroelectronics

IC OPAMP GP 2 CIRCUIT 8SOIC

2383

TSC2012IST

TSC2012IST

STMicroelectronics

IC CURR SENSE 1 CIRCUIT 8MINISO

844

MC4558IDT

MC4558IDT

STMicroelectronics

IC OPAMP GP 2 CIRCUIT 8SO

272

CS30AL

CS30AL

STMicroelectronics

IC CURR SENSE 1 CIRCUIT SOT23-5

1094

LMV823IST

LMV823IST

STMicroelectronics

IC OPAMP GP 2 CIRCUIT 10MINISO

0

TSX922IDT

TSX922IDT

STMicroelectronics

IC OPAMP GP 2 CIRCUIT 8SO

2924

TS1852IST

TS1852IST

STMicroelectronics

IC OPAMP GP 2 CIRCUIT 8MINISO

0

TSC2011IST

TSC2011IST

STMicroelectronics

IC CURR SENSE 1 CIRCUIT 8MINISO

3831

TSV854IPT

TSV854IPT

STMicroelectronics

IC OPAMP GP 4 CIRCUIT 14TSSOP

0

TS27M2AIDT

TS27M2AIDT

STMicroelectronics

IC OPAMP GP 2 CIRCUIT 8SO

2465

TSX562AIST

TSX562AIST

STMicroelectronics

IC OPAMP GP 2 CIRCUIT 8MINISO

4000

TSX634IPT

TSX634IPT

STMicroelectronics

IC OPAMP GP 4 CIRCUIT 14TSSOP

0

TSX634IYPT

TSX634IYPT

STMicroelectronics

IC OPAMP GP 4 CIRCUIT 14TSSOP

0

LMV821ILT

LMV821ILT

STMicroelectronics

IC OPAMP GP 1 CIRCUIT SOT23-5

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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