Linear - Amplifiers - Instrumentation, OP Amps, Buffer Amps

Image Part Number Description / PDF Quantity Rfq
TSB712IYDT

TSB712IYDT

STMicroelectronics

IC OPAMP GP 2 CIRCUIT 8SOIC

0

TL084BCPT

TL084BCPT

STMicroelectronics

IC OPAMP JFET 4 CIRCUIT 14TSSOP

0

TSB611ILT

TSB611ILT

STMicroelectronics

IC OPAMP GP 1 CIRCUIT SOT23-5

0

UA741ID

UA741ID

STMicroelectronics

IC OPAMP GP 1 CIRCUIT 8SO

1794

TL084IPT

TL084IPT

STMicroelectronics

IC OPAMP JFET 4 CIRCUIT 14TSSOP

4689

LMV821IYLT

LMV821IYLT

STMicroelectronics

IC OPAMP GP 1 CIRCUIT SOT23-5

0

LMV321LICT

LMV321LICT

STMicroelectronics

IC OPAMP GP 1 CIRCUIT SC70-5

38721

TS922IDT

TS922IDT

STMicroelectronics

IC OPAMP GP 2 CIRCUIT 8SO

5913

TS462CDT

TS462CDT

STMicroelectronics

IC OPAMP GP 2 CIRCUIT 8SO

0

TS922AIPT

TS922AIPT

STMicroelectronics

IC OPAMP GP 2 CIRCUIT 8TSSOP

1338

TSH22IDT

TSH22IDT

STMicroelectronics

IC OPAMP GP 2 CIRCUIT 8SO

11494

LM358AST

LM358AST

STMicroelectronics

IC OPAMP GP 2 CIRCUIT 8MINISO

0

LMV824AIYPT

LMV824AIYPT

STMicroelectronics

IC OPAMP GP 4 CIRCUIT 14TSSOP

0

LMV822IYDT

LMV822IYDT

STMicroelectronics

IC OPAMP GP 2 CIRCUIT 8SO

0

TS1872IYPT

TS1872IYPT

STMicroelectronics

IC OPAMP GP 2 CIRCUIT 8TSSOP

4000

TS321AILT

TS321AILT

STMicroelectronics

IC OPAMP GP 1 CIRCUIT SOT23-5

122

TL081IDT

TL081IDT

STMicroelectronics

IC OPAMP JFET 1 CIRCUIT 8SO

4238

TS27L4AIPT

TS27L4AIPT

STMicroelectronics

IC OPAMP GP 4 CIRCUIT 14TSSOP

0

TSV994IPT

TSV994IPT

STMicroelectronics

IC OPAMP GP 4 CIRCUIT 14TSSOP

0

TS931BILT

TS931BILT

STMicroelectronics

IC OPAMP GP 1 CIRCUIT SOT23-5

4720

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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