Linear - Amplifiers - Instrumentation, OP Amps, Buffer Amps

Image Part Number Description / PDF Quantity Rfq
TSX712IST

TSX712IST

STMicroelectronics

IC OPAMP GP 2 CIRCUIT 8MINISO

431

TSV524IPT

TSV524IPT

STMicroelectronics

IC CMOS 4 CIRCUIT 14TSSOP

1777

TSV6394AIPT

TSV6394AIPT

STMicroelectronics

IC OPAMP GP 4 CIRCUIT 14TSSOP

2348

LM258AYDT

LM258AYDT

STMicroelectronics

IC OPAMP GP 2 CIRCUIT 8SO

72

TS972IPT

TS972IPT

STMicroelectronics

IC OPAMP GP 2 CIRCUIT 8TSSOP

3764

TSX632AIST

TSX632AIST

STMicroelectronics

IC OPAMP GP 2 CIRCUIT 8MINISO

0

TSV912IQ2T

TSV912IQ2T

STMicroelectronics

IC OPAMP GP 2 CIRCUIT 8DFN

237

TSB7191IYLT

TSB7191IYLT

STMicroelectronics

CONDITIONING & INTERFACES

0

TSZ182IYST

TSZ182IYST

STMicroelectronics

IC OPAMP ZER-DRIFT 2CIRC 8MINISO

4000

TS272CPT

TS272CPT

STMicroelectronics

IC OPAMP GP 2 CIRCUIT 8TSSOP

0

TSC213ICT

TSC213ICT

STMicroelectronics

IC CURR SENSE 1 CIRCUIT SC70-6

958

TS507IYLT

TS507IYLT

STMicroelectronics

IC OPAMP GP 1 CIRCUIT SOT23-5

1435

TS272AIDT

TS272AIDT

STMicroelectronics

IC OPAMP GP 2 CIRCUIT 8SO

30

TSV6293AIST

TSV6293AIST

STMicroelectronics

IC OPAMP GP 2 CIRCUIT 10MINISO

0

TS1872AIST

TS1872AIST

STMicroelectronics

IC OPAMP GP 2 CIRCUIT 8MINISO

1089

TSC1021AIYPT

TSC1021AIYPT

STMicroelectronics

IC CURR SENSE 1 CIRCUIT 8TSSOP

0

TSX561AIYLT

TSX561AIYLT

STMicroelectronics

IC OPAMP GP 1 CIRCUIT SOT23-5

0

TSV992IDT

TSV992IDT

STMicroelectronics

IC OPAMP GP 2 CIRCUIT 8SO

0

LMV324IPT

LMV324IPT

STMicroelectronics

IC OPAMP GP 4 CIRCUIT 14TSSOP

18171

MC33172DT

MC33172DT

STMicroelectronics

IC OPAMP GP 2 CIRCUIT 8SO

6919

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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