Linear - Amplifiers - Instrumentation, OP Amps, Buffer Amps

Image Part Number Description / PDF Quantity Rfq
LT1999CMS8-20F#TRPBF

LT1999CMS8-20F#TRPBF

Analog Devices, Inc.

IC CURR SENSE 1 CIRCUIT 8MSOP

0

LT6221CDD#PBF

LT6221CDD#PBF

Analog Devices, Inc.

IC OPAMP GP 2 CIRCUIT 8DFN

1302

AD647SE

AD647SE

Analog Devices, Inc.

DUAL OP AMP

2712

MAX4294EUD

MAX4294EUD

Analog Devices, Inc.

IC GP OPAMP 4 CIRCUIT 14TSSOP

0

LT6201CS8#TRPBF

LT6201CS8#TRPBF

Analog Devices, Inc.

IC BUFFER 2 CIRCUIT 8SO

0

LT1498IS8#TRPBF

LT1498IS8#TRPBF

Analog Devices, Inc.

IC OPAMP GP 2 CIRCUIT 8SO

2901

AD8541ARZ-REEL

AD8541ARZ-REEL

Analog Devices, Inc.

IC OPAMP GP 1 CIRCUIT 8SOIC

678

LT1999IS8-50#TRPBF

LT1999IS8-50#TRPBF

Analog Devices, Inc.

IC CURR SENSE 1 CIRCUIT 8SO

0

SSM2118TS

SSM2118TS

Analog Devices, Inc.

VOLTAGE CONTROLLED AMPLIFIER

12602

AD8552ARU-REEL

AD8552ARU-REEL

Analog Devices, Inc.

IC ZERO-DRIFT 2 CIRCUIT 8TSSOP

1896

AD8022AR-REEL7

AD8022AR-REEL7

Analog Devices, Inc.

IC VOLTAGE FEEDBACK 2 CIRC 8SOIC

6000

AD8642ARZ-REEL

AD8642ARZ-REEL

Analog Devices, Inc.

IC OPAMP JFET 2 CIRCUIT 8SOIC

934

MAX4326ESA

MAX4326ESA

Analog Devices, Inc.

IC GP OPAMP 2 CIRCUIT 8SOIC

515

LT6002CGN#TRPBF

LT6002CGN#TRPBF

Analog Devices, Inc.

IC OPAMP GP 4 CIRCUIT 16SSOP

0

MAX4352EUK

MAX4352EUK

Analog Devices, Inc.

OP AMP WITH RAIL-TO-RAIL OUTPUT

600

MAX4274BKEUA+

MAX4274BKEUA+

Analog Devices, Inc.

IC GP OPAMP 2 CIRCUIT 8UMAX

5202

AD707SQ

AD707SQ

Analog Devices, Inc.

OP AMP, 25UV OFFSET-MAX

10756

MAX4494AUA

MAX4494AUA

Analog Devices, Inc.

IC GP OPAMP 2 CIRCUIT 8UMAX

29160

LT1999HMS8-10F#WTRPBF

LT1999HMS8-10F#WTRPBF

Analog Devices, Inc.

IC CURR SENSE 1 CIRCUIT 8MSOP

0

LTC6431BIUF-15#TRPBF

LTC6431BIUF-15#TRPBF

Analog Devices, Inc.

IC OPAMP GP 1 CIRCUIT 24QFN

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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