Linear - Amplifiers - Instrumentation, OP Amps, Buffer Amps

Image Part Number Description / PDF Quantity Rfq
LM258AST

LM258AST

STMicroelectronics

IC OPAMP GP 2 CIRCUIT 8MINISO

29964

TS924IYDT

TS924IYDT

STMicroelectronics

IC OPAMP GP 4 CIRCUIT 14SO

2197

TSV994IYPT

TSV994IYPT

STMicroelectronics

IC OPAMP GP 4 CIRCUIT 14TSSOP

1484

TS27L2ACDT

TS27L2ACDT

STMicroelectronics

IC OPAMP GP 2 CIRCUIT 8SO

14

TSV630ILT

TSV630ILT

STMicroelectronics

IC OPAMP GP 1 CIRCUIT SOT23-6

2625

TSB572IYST

TSB572IYST

STMicroelectronics

IC OPAMP GP 2 CIRCUIT 8MINISO

0

LM258DT

LM258DT

STMicroelectronics

IC OPAMP GP 2 CIRCUIT 8SO

2541

TSM104AIDT

TSM104AIDT

STMicroelectronics

IC OPAMP GP 4 CIRCUIT 16SO

0

LM2904PT

LM2904PT

STMicroelectronics

IC OPAMP GP 2 CIRCUIT 8TSSOP

3462

TS974IPT

TS974IPT

STMicroelectronics

IC OPAMP GP 4 CIRCUIT 14TSSOP

76

LM258WDT

LM258WDT

STMicroelectronics

IC OPAMP GP 2 CIRCUIT 8SO

0

TSC103IDT

TSC103IDT

STMicroelectronics

IC CURR SENSE 1 CIRCUIT 8SO

3222

TSV6392AIDT

TSV6392AIDT

STMicroelectronics

IC OPAMP GP 2 CIRCUIT 8SO

2497

TSV624IPT

TSV624IPT

STMicroelectronics

IC OPAMP GP 4 CIRCUIT 14TSSOP

64

LMV824IDT

LMV824IDT

STMicroelectronics

IC OPAMP GP 4 CIRCUIT 14SO

1763

LM258APT

LM258APT

STMicroelectronics

IC OPAMP GP 2 CIRCUIT 8TSSOP

1329

TSV6394IPT

TSV6394IPT

STMicroelectronics

IC OPAMP GP 4 CIRCUIT 14TSSOP

0

TSV621ICT

TSV621ICT

STMicroelectronics

IC OPAMP GP 1 CIRCUIT SC70-5

1847

TSV712IQ2T

TSV712IQ2T

STMicroelectronics

IC OPAMP GP 2 CIRCUIT 8DFN

0

TSV6294IPT

TSV6294IPT

STMicroelectronics

IC OPAMP GP 4 CIRCUIT 14TSSOP

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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