Linear - Amplifiers - Instrumentation, OP Amps, Buffer Amps

Image Part Number Description / PDF Quantity Rfq
AD8039AR

AD8039AR

Analog Devices, Inc.

IC VOLTAGE FEEDBACK 2 CIRC 8SOIC

1397

LT1801IMS8#PBF

LT1801IMS8#PBF

Analog Devices, Inc.

IC OPAMP GP 2 CIRCUIT 8MSOP

1086

OP491GP

OP491GP

Analog Devices, Inc.

IC GP OPAMP 4 CIRCUIT 14DIP

0

LT6200CS6#TRPBF

LT6200CS6#TRPBF

Analog Devices, Inc.

IC BUFFER 1 CIRCUIT TSOT23-6

0

LT6014CS8#TRPBF

LT6014CS8#TRPBF

Analog Devices, Inc.

IC OPAMP GP 2 CIRCUIT 8SO

0

LT1999CMS8-20#PBF

LT1999CMS8-20#PBF

Analog Devices, Inc.

IC CURR SENSE 1 CIRCUIT 8MSOP

0

AD8052ARM

AD8052ARM

Analog Devices, Inc.

IC VOLTAGE FEEDBACK 2 CIRC 8MSOP

72376

AD8515ARTZ-REEL

AD8515ARTZ-REEL

Analog Devices, Inc.

IC OPAMP GP 1 CIRCUIT SOT23-5

2937

LT1006S8#TRPBF

LT1006S8#TRPBF

Analog Devices, Inc.

IC OPAMP GP 1 CIRCUIT 8SO

5715

AD8221TRMZ-EP

AD8221TRMZ-EP

Analog Devices, Inc.

IC INST AMP 1 CIRCUIT 8MSOP

0

LT1037IS8#TRPBF

LT1037IS8#TRPBF

Analog Devices, Inc.

IC OPAMP GP 1 CIRCUIT 8SO

0

AD8628ARZ

AD8628ARZ

Analog Devices, Inc.

IC OPAMP ZERO-DRIFT 1 CIRC 8SOIC

391

MAX448ACPD-2

MAX448ACPD-2

Analog Devices, Inc.

QUAD OPERATIONAL AMPLIFIER

518

OP37GJ

OP37GJ

Analog Devices, Inc.

HIGH SPEED OP AMP

785

LT1498MPS8#PBF

LT1498MPS8#PBF

Analog Devices, Inc.

IC OPAMP GP 2 CIRCUIT 8SO

420

ADA4610-1ARZ-RL

ADA4610-1ARZ-RL

Analog Devices, Inc.

IC OPAMP JFET 1 CIRCUIT 8SOIC

0

ADA4897-2ARMZ

ADA4897-2ARMZ

Analog Devices, Inc.

IC OPAMP VFB 2 CIRCUIT 10MSOP

2779

ADA4500-2ARMZ-RL

ADA4500-2ARMZ-RL

Analog Devices, Inc.

IC OPAMP GP 2 CIRCUIT 8MSOP

0

AD8539ARZ-REEL7

AD8539ARZ-REEL7

Analog Devices, Inc.

IC OPAMP ZERO-DRIFT 2 CIRC 8SOIC

838

LT1991AIDD#PBF

LT1991AIDD#PBF

Analog Devices, Inc.

IC OPAMP PGA 1 CIRCUIT 10DFN

271

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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