Linear - Amplifiers - Instrumentation, OP Amps, Buffer Amps

Image Part Number Description / PDF Quantity Rfq
MC33172D

MC33172D

STMicroelectronics

IC GP OPAMP 2 CIRCUIT 8SO

4777

TSZ121ICT

TSZ121ICT

STMicroelectronics

IC OPAMP ZERO-DRIFT 1CIRC SC70-5

29715

TSU111ICT

TSU111ICT

STMicroelectronics

IC CMOS 1 CIRCUIT SC70-5

2566

LM258AWDT

LM258AWDT

STMicroelectronics

IC OPAMP GP 2 CIRCUIT 8SO

2246

TSX562AIYST

TSX562AIYST

STMicroelectronics

IC OPAMP GP 2 CIRCUIT 8MINISO

2500

TS1871ILT

TS1871ILT

STMicroelectronics

IC OPAMP GP 1 CIRCUIT SOT23-5

0

TS27L2CPT

TS27L2CPT

STMicroelectronics

IC OPAMP GP 2 CIRCUIT 8TSSOP

0

TS922AID

TS922AID

STMicroelectronics

IC OPAMP GP 2 CIRCUIT 8SO

1314

TS941AILT

TS941AILT

STMicroelectronics

IC OPAMP GP 1 CIRCUIT SOT23-5

3000

LMX358IST

LMX358IST

STMicroelectronics

IC OPAMP GP 2 CIRCUIT 8MINISO

6344

TL082IYDT

TL082IYDT

STMicroelectronics

IC OPAMP JFET 2 CIRCUIT 8SO

0

LMV358LIPT

LMV358LIPT

STMicroelectronics

IC OPAMP GP 2 CIRCUIT

20259

TS922AIYPT

TS922AIYPT

STMicroelectronics

IC OPAMP GP 2 CIRCUIT 8TSSOP

8201

TSV324IYDT

TSV324IYDT

STMicroelectronics

IC OPAMP GP 4 CIRCUIT 14SO

480

LM2902WDT

LM2902WDT

STMicroelectronics

IC OPAMP GP 4 CIRCUIT 14SO

0

OA4ZHA33Q

OA4ZHA33Q

STMicroelectronics

IC OPAMP ZERO-DRIFT 4 CIRC 16QFN

9686

TS1872IYDT

TS1872IYDT

STMicroelectronics

IC OPAMP GP 2 CIRCUIT 8SO

0

TSX632IQ2T

TSX632IQ2T

STMicroelectronics

IC OPAMP GP 2 CIRCUIT 8DFN

32

TL082ACDT

TL082ACDT

STMicroelectronics

IC OPAMP JFET 2 CIRCUIT 8SO

9378

TS9222IPT

TS9222IPT

STMicroelectronics

IC OPAMP GP 2 CIRCUIT 8TSSOP

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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