Linear - Amplifiers - Instrumentation, OP Amps, Buffer Amps

Image Part Number Description / PDF Quantity Rfq
AD8066AR-REEL

AD8066AR-REEL

Analog Devices, Inc.

IC VOLTAGE FEEDBACK 2 CIRC 8SOIC

4774

OP491GS

OP491GS

Analog Devices, Inc.

IC GP OPAMP 4 CIRCUIT 14SOIC

1835

AD8137YRZ-REEL

AD8137YRZ-REEL

Analog Devices, Inc.

IC OPAMP DIFF 1 CIRCUIT 8SOIC

2288

LT1362CN#PBF

LT1362CN#PBF

Analog Devices, Inc.

IC OPAMP VFB 4 CIRCUIT 14DIP

45

AD706ARZ-REEL

AD706ARZ-REEL

Analog Devices, Inc.

IC OPAMP GP 2 CIRCUIT 8SOIC

4324

AD8015AR-REEL

AD8015AR-REEL

Analog Devices, Inc.

IC TRANSIMPEDANCE 1 CIRC 8SOIC

10000

LT1115CSW#TRPBF

LT1115CSW#TRPBF

Analog Devices, Inc.

IC AUDIO 1 CIRCUIT 16SO

0

LT1999CS8-50#TRPBF

LT1999CS8-50#TRPBF

Analog Devices, Inc.

IC CURR SENSE 1 CIRCUIT 8SO

0

AD8002ARMZ-REEL

AD8002ARMZ-REEL

Analog Devices, Inc.

IC OPAMP CFA 2 CIRCUIT 8MSOP

0

ADA4895-1ARZ-R7

ADA4895-1ARZ-R7

Analog Devices, Inc.

IC OPAMP GP 1 CIRCUIT 8SOIC

0

AD8676BRZ

AD8676BRZ

Analog Devices, Inc.

IC OPAMP GP 2 CIRCUIT 8SOIC

3682

AD827JR-16-REEL7

AD827JR-16-REEL7

Analog Devices, Inc.

IC GP OPAMP 2 CIRCUIT 16SOIC

975

AD603ARZ-REEL7

AD603ARZ-REEL7

Analog Devices, Inc.

IC OPAMP VGA 1 CIRCUIT 8SOIC

4462

LT1077IS8#TRPBF

LT1077IS8#TRPBF

Analog Devices, Inc.

IC OPAMP GP 1 CIRCUIT 8SO

961

ADA4622-2ARZ-RL

ADA4622-2ARZ-RL

Analog Devices, Inc.

IC OPAMP JFET 2 CIRCUIT 8SOIC

0

LT6203XS8#TRPBF

LT6203XS8#TRPBF

Analog Devices, Inc.

IC OPAMP GP 2 CIRCUIT 8SO

0

LTC6258HS6#TRMPBF

LTC6258HS6#TRMPBF

Analog Devices, Inc.

IC OPAMP GP 1 CIRCUIT TSOT23-6

0

LT6203IS8#TRPBF

LT6203IS8#TRPBF

Analog Devices, Inc.

IC OPAMP GP 2 CIRCUIT 8SO

0

AD8663ARZ-REEL7

AD8663ARZ-REEL7

Analog Devices, Inc.

IC OPAMP GP 1 CIRCUIT 8SOIC

0

OP462GS

OP462GS

Analog Devices, Inc.

IC GP OPAMP 4 CIRCUIT 14SOIC

223

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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