Linear - Amplifiers - Instrumentation, OP Amps, Buffer Amps

Image Part Number Description / PDF Quantity Rfq
5962-89896012A

5962-89896012A

Analog Devices, Inc.

PRECISION OP AMP (OP90ARC)

0

LT6232CGN#PBF

LT6232CGN#PBF

Analog Devices, Inc.

IC OPAMP GP 4 CIRCUIT 16SSOP

0

MAX44270AUK+T

MAX44270AUK+T

Analog Devices, Inc.

MOSFET DRIVER

55000

AD623AN

AD623AN

Analog Devices, Inc.

IC INST AMP 1 CIRCUIT 8DIP

0

MAX4255EUK-T

MAX4255EUK-T

Analog Devices, Inc.

IC GP OPAMP 1 CIRCUIT SOT23-5

1990

LT1078SW#TRPBF

LT1078SW#TRPBF

Analog Devices, Inc.

IC OPAMP GP 2 CIRCUIT 16SO

0

LTC6087CMS8#PBF

LTC6087CMS8#PBF

Analog Devices, Inc.

IC OPAMP GP 2 CIRCUIT 8MSOP

2003

AD623BRZ-RL

AD623BRZ-RL

Analog Devices, Inc.

IC INST AMP 1 CIRCUIT 8SOIC

0

MAX4353EKA-T

MAX4353EKA-T

Analog Devices, Inc.

IC VOLT FEEDBACK 2CIRC SOT23-8

5000

LTC6262HDC#TRMPBF

LTC6262HDC#TRMPBF

Analog Devices, Inc.

IC OPAMP GP 2 CIRCUIT 8DFN

1609

LT6018HS8E#TRPBF

LT6018HS8E#TRPBF

Analog Devices, Inc.

IC OPAMP GP 1 CIRCUIT 8SOIC

0

OP249GP

OP249GP

Analog Devices, Inc.

IC OPAMP JFET 2 CIRCUIT 8DIP

1611

AD8566ARMZ-R2

AD8566ARMZ-R2

Analog Devices, Inc.

IC GP OPAMP 2 CIRCUIT 8MSOP

0

ICL7641BCJD

ICL7641BCJD

Analog Devices, Inc.

IC GP OPAMP 4 CIRCUIT 14CDIP

264

AD8202YRZ-RL

AD8202YRZ-RL

Analog Devices, Inc.

IC OPAMP DIFF 1 CIRCUIT 8SOIC

0

MAX4323EUT-T

MAX4323EUT-T

Analog Devices, Inc.

IC GP OPAMP 1 CIRCUIT SOT23-6

7500

AD8021AR-REEL

AD8021AR-REEL

Analog Devices, Inc.

IC VOLTAGE FEEDBACK 1 CIRC 8SOIC

2500

ADA4665-2ARZ-RL

ADA4665-2ARZ-RL

Analog Devices, Inc.

IC OPAMP GP 2 CIRCUIT 8SOIC

0

ADA4084-1ARJZ-RL

ADA4084-1ARJZ-RL

Analog Devices, Inc.

IC OPAMP GP 1 CIRCUIT SOT23-5

0

OP291GSZ

OP291GSZ

Analog Devices, Inc.

IC OPAMP GP 2 CIRCUIT 8SOIC

1632

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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