Linear - Amplifiers - Instrumentation, OP Amps, Buffer Amps

Image Part Number Description / PDF Quantity Rfq
LF253DT

LF253DT

STMicroelectronics

IC OPAMP JFET 2 CIRCUIT 8SO

244

TSZ124IYPT

TSZ124IYPT

STMicroelectronics

IC OPAMP GP 4 CIRCUIT 14TSSOP

0

TSV852AIDT

TSV852AIDT

STMicroelectronics

IC OPAMP GP 2 CIRCUIT 8SO

0

TSB7191ILT

TSB7191ILT

STMicroelectronics

PRECISION, 22 MHZ, RR IO, 36 V B

2625

TSB712IDT

TSB712IDT

STMicroelectronics

IC OPAMP GP 2 CIRCUIT 8SOIC

1840

TSV851AICT

TSV851AICT

STMicroelectronics

IC OPAMP GP 1 CIRCUIT SC70-5

0

TSH113ID

TSH113ID

STMicroelectronics

IC OPAMP CFA 3 CIRCUIT 14SO

0

TS9224IYDT

TS9224IYDT

STMicroelectronics

IC OPAMP GP 4 CIRCUIT 14SO

8

TSV6292IDT

TSV6292IDT

STMicroelectronics

IC OPAMP GP 2 CIRCUIT 8SO

0

TL071ACDT

TL071ACDT

STMicroelectronics

IC OPAMP JFET 1 CIRCUIT 8SO

4006

TSV358IYDT

TSV358IYDT

STMicroelectronics

IC OPAMP GP 2 CIRCUIT 8SO

4210

TS507IDT

TS507IDT

STMicroelectronics

IC OPAMP GP 1 CIRCUIT 8SO

0

TS924AIYDT

TS924AIYDT

STMicroelectronics

IC OPAMP GP 4 CIRCUIT 14SO

2500

TSV623IST

TSV623IST

STMicroelectronics

IC OPAMP GP 2 CIRCUIT 10MINISO

0

TSV633AIST

TSV633AIST

STMicroelectronics

IC OPAMP GP 2 CIRCUIT 10MINISO

0

TS954IPT

TS954IPT

STMicroelectronics

IC OPAMP GP 4 CIRCUIT 14TSSOP

0

LM324QT

LM324QT

STMicroelectronics

IC OPAMP GP 4 CIRCUIT 16QFN

17119

TS274AIPT

TS274AIPT

STMicroelectronics

IC OPAMP GP 4 CIRCUIT 14TSSOP

1563

TL082ID

TL082ID

STMicroelectronics

IC OPAMP JFET 4MHZ 8SO

1785

TSV631ICT

TSV631ICT

STMicroelectronics

IC OPAMP GP 1 CIRCUIT SC70-5

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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