Linear - Amplifiers - Instrumentation, OP Amps, Buffer Amps

Image Part Number Description / PDF Quantity Rfq
AD8032AR-REEL

AD8032AR-REEL

Analog Devices, Inc.

IC VOLTAGE FEEDBACK 2 CIRC 8SOIC

7318

BUF03EJ

BUF03EJ

Analog Devices, Inc.

HIGH SPEED VOLTAGE BUFFER

2544

AD8629ARZ

AD8629ARZ

Analog Devices, Inc.

IC OPAMP ZERO-DRIFT 2 CIRC 8SOIC

1305

AD8079AR-REEL7

AD8079AR-REEL7

Analog Devices, Inc.

IC BUFFER 2 CIRCUIT 8SOIC

3000

LTC6079HGN#TRPBF

LTC6079HGN#TRPBF

Analog Devices, Inc.

IC OPAMP GP 4 CIRCUIT 16SSOP

0

LTC6254CMS#TRPBF

LTC6254CMS#TRPBF

Analog Devices, Inc.

IC OPAMP GP 4 CIRCUIT 16MSOP

0

LT6376HMS#PBF

LT6376HMS#PBF

Analog Devices, Inc.

IC OPAMP GP 1 CIRCUIT 16MSOP

0

AD623BRZ-R7

AD623BRZ-R7

Analog Devices, Inc.

IC INST AMP 1 CIRCUIT 8SOIC

1520

LTC6101ACMS8#TRPBF

LTC6101ACMS8#TRPBF

Analog Devices, Inc.

IC CURR SENSE 1 CIRCUIT 8MSOP

0

OP297FPZ

OP297FPZ

Analog Devices, Inc.

IC OPAMP GP 2 CIRCUIT 8DIP

118

AD8532ARMZ-REEL

AD8532ARMZ-REEL

Analog Devices, Inc.

IC OPAMP GP 2 CIRCUIT 8MSOP

2385

AD8047ARZ-REEL7

AD8047ARZ-REEL7

Analog Devices, Inc.

IC OPAMP VFB 1 CIRCUIT 8SOIC

1845

LTC6240IS8#PBF

LTC6240IS8#PBF

Analog Devices, Inc.

IC OPAMP GP 1 CIRCUIT 8SO

313

AD8002ARZ

AD8002ARZ

Analog Devices, Inc.

IC OPAMP CFA 2 CIRCUIT 8SOIC

258

LTC6101HVAIS5#TRMPBF

LTC6101HVAIS5#TRMPBF

Analog Devices, Inc.

IC CURR SENSE 1 CIRCUIT TSOT23-5

4916

AD524BDZ

AD524BDZ

Analog Devices, Inc.

IC INST AMP 1 CIRCUIT 16CDIP

0

AD8418BRMZ

AD8418BRMZ

Analog Devices, Inc.

IC CURR SENSE 1 CIRCUIT 8MSOP

0

AD8532ARZ-REEL7

AD8532ARZ-REEL7

Analog Devices, Inc.

IC OPAMP GP 2 CIRCUIT 8SOIC

577

AD8546ARMZ-RL

AD8546ARMZ-RL

Analog Devices, Inc.

IC OPAMP GP 2 CIRCUIT 8MSOP

0

OP777ARZ-REEL7

OP777ARZ-REEL7

Analog Devices, Inc.

IC OPAMP GP 1 CIRCUIT 8SOIC

502

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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