Linear - Amplifiers - Instrumentation, OP Amps, Buffer Amps

Image Part Number Description / PDF Quantity Rfq
AD8051ARZ-REEL7

AD8051ARZ-REEL7

Analog Devices, Inc.

IC OPAMP VFB 1 CIRCUIT 8SOIC

1114

OP260FZ

OP260FZ

Analog Devices, Inc.

DUAL OP AMP

1094

LT1787HS8#TRPBF

LT1787HS8#TRPBF

Analog Devices, Inc.

IC CURR SENSE 1 CIRCUIT 8SO

0

ADA4622-4ARZ-R7

ADA4622-4ARZ-R7

Analog Devices, Inc.

IC OPAMP JFET 4 CIRCUIT 14SOIC

0

AD843JR-16-REEL

AD843JR-16-REEL

Analog Devices, Inc.

IC GP OPAMP 1 CIRCUIT 16SOIC

283

LTC6104IMS8#PBF

LTC6104IMS8#PBF

Analog Devices, Inc.

IC CURR SENSE 1 CIRCUIT 8MSOP

173

AD8651ARM-REEL

AD8651ARM-REEL

Analog Devices, Inc.

IC VOLTAGE FEEDBACK 1 CIRC 8MSOP

3229

LTC2050HVMPS6#TRMPBF

LTC2050HVMPS6#TRMPBF

Analog Devices, Inc.

IC OPAMP ZER-DRIFT 1CIR TSOT23-6

223

LT1816AIMS#TRPBF

LT1816AIMS#TRPBF

Analog Devices, Inc.

IC OPAMP VFB 2 CIRCUIT 10MSOP

0

AD8519AKS-REEL7

AD8519AKS-REEL7

Analog Devices, Inc.

IC GP OPAMP 1 CIRCUIT SC70-5

7821

OP413FS

OP413FS

Analog Devices, Inc.

IC GP OPAMP 4 CIRCUIT 16SOIC

1693

MXL1007MH

MXL1007MH

Analog Devices, Inc.

OPERATIONAL AMPLIFIER

1445

LTC2052CGN#PBF

LTC2052CGN#PBF

Analog Devices, Inc.

IC OPAMP ZERO-DRIFT 4CIRC 16SSOP

131

MAX4238AUT#TG16

MAX4238AUT#TG16

Analog Devices, Inc.

IC GP OPAMP 1 CIRCUIT SOT23-6

0

AD627BRZ-R7

AD627BRZ-R7

Analog Devices, Inc.

IC INST AMP 1 CIRCUIT 8SOIC

4268

LTC2054HVIS5#TRMPBF

LTC2054HVIS5#TRMPBF

Analog Devices, Inc.

IC OPAMP ZER-DRIFT 1CIR TSOT23-5

1349

AD8538ARZ-REEL7

AD8538ARZ-REEL7

Analog Devices, Inc.

IC OPAMP ZERO-DRIFT 1 CIRC 8SOIC

0

ADA4891-2ARMZ-RL

ADA4891-2ARMZ-RL

Analog Devices, Inc.

IC OPAMP GP 2 CIRCUIT 8MSOP

0

AD8620AR-REEL7

AD8620AR-REEL7

Analog Devices, Inc.

IC OPAMP JFET 2 CIRCUIT 8SOIC

806

LTC6247CMS#TRPBF

LTC6247CMS#TRPBF

Analog Devices, Inc.

IC OPAMP GP 2 CIRCUIT 10MSOP

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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