Linear - Amplifiers - Instrumentation, OP Amps, Buffer Amps

Image Part Number Description / PDF Quantity Rfq
SI8540-B-FS

SI8540-B-FS

Silicon Labs

IC CURR SENSE 1 CIRCUIT 8SOIC

0

TSM9634TEUK+

TSM9634TEUK+

Silicon Labs

IC CURR SENSE 1 CIRCUIT SOT23-5

0

TS1103-25EG6T

TS1103-25EG6T

Silicon Labs

IC CURR SENSE 1 CIRCUIT SOT23-6

0

TS1101-100EG6

TS1101-100EG6

Silicon Labs

IC CURR SENSE 1 CIRCUIT SOT23-6

0

TS1105-200ITD833T

TS1105-200ITD833T

Silicon Labs

IC CURR SENSE 1 CIRCUIT 8TDFN

0

TSM9634FEUK+

TSM9634FEUK+

Silicon Labs

IC CURR SENSE 1 CIRCUIT SOT23-5

0

TS1100-200EG5

TS1100-200EG5

Silicon Labs

IC CURR SENSE 1 CIRCUIT SOT23-5

0

TS1101-200EG6T

TS1101-200EG6T

Silicon Labs

IC CURR SENSE 1 CIRCUIT SOT23-6

0

TS1102-200EG5T

TS1102-200EG5T

Silicon Labs

IC CURR SENSE 1 CIRCUIT SOT23-5

0

TS1105-20ITD833T

TS1105-20ITD833T

Silicon Labs

IC CURR SENSE 1 CIRCUIT 8TDFN

0

TSM9938TEUK+T

TSM9938TEUK+T

Silicon Labs

IC CURR SENSE 1 CIRCUIT SOT23-5

0

TS1100-100EG5

TS1100-100EG5

Silicon Labs

IC CURR SENSE 1 CIRCUIT SOT23-5

0

TS1100-50EG5T

TS1100-50EG5T

Silicon Labs

IC CURR SENSE 1 CIRCUIT SOT23-5

0

TS1102-100EG5

TS1102-100EG5

Silicon Labs

IC CURR SENSE 1 CIRCUIT SOT23-5

0

TSM9938HEUK+

TSM9938HEUK+

Silicon Labs

IC CURR SENSE 1 CIRCUIT SOT23-5

0

TSM9938FEUK+

TSM9938FEUK+

Silicon Labs

IC CURR SENSE 1 CIRCUIT SOT23-5

0

TSM9938TEUK+

TSM9938TEUK+

Silicon Labs

IC CURR SENSE 1 CIRCUIT SOT23-5

0

TSM9938FEUK+T

TSM9938FEUK+T

Silicon Labs

IC CURR SENSE 1 CIRCUIT SOT23-5

0

TS12011ITD1022

TS12011ITD1022

Silicon Labs

IC OPAMP GP 1 CIRCUIT 10TDFN

0

TS1108-20ITQ1633T

TS1108-20ITQ1633T

Silicon Labs

IC CURR SENSE 1 CIRCUIT 16QFN

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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