Linear - Amplifiers - Instrumentation, OP Amps, Buffer Amps

Image Part Number Description / PDF Quantity Rfq
LTC6240HVCS8#PBF

LTC6240HVCS8#PBF

Analog Devices, Inc.

IC OPAMP GP 1 CIRCUIT 8SO

4675

LT1991AIDD#TRPBF

LT1991AIDD#TRPBF

Analog Devices, Inc.

IC OPAMP PGA 1 CIRCUIT 10DFN

0

AD8129AR

AD8129AR

Analog Devices, Inc.

IC DIFF 1 CIRCUIT 8SOIC

2610

LT1814CS#PBF

LT1814CS#PBF

Analog Devices, Inc.

IC OPAMP VFB 4 CIRCUIT 14SO

74

AD8655ARZ-REEL7

AD8655ARZ-REEL7

Analog Devices, Inc.

IC OPAMP GP 1 CIRCUIT 8SOIC

1955

LT6230CS6#TRPBF

LT6230CS6#TRPBF

Analog Devices, Inc.

IC OPAMP GP 1 CIRCUIT TSOT23-6

0

AD8603AUJ-R2

AD8603AUJ-R2

Analog Devices, Inc.

IC GP OPAMP 1 CIRCUIT TSOT23-5

0

LT1800CS8#PBF

LT1800CS8#PBF

Analog Devices, Inc.

IC OPAMP GP 1 CIRCUIT 8SO

360

OP90GSZ-REEL

OP90GSZ-REEL

Analog Devices, Inc.

IC GP OPAMP 1 CIRCUIT 8SOIC

7608

LT1259IS#PBF

LT1259IS#PBF

Analog Devices, Inc.

IC OPAMP CFA 2 CIRCUIT 14SO

0

AD8054ARU

AD8054ARU

Analog Devices, Inc.

IC VOLT FEEDBACK 4CIRC 14TSSOP

5325

ICL7616ACSA

ICL7616ACSA

Analog Devices, Inc.

IC GP OPAMP 1 CIRCUIT 8SOIC

1423

MAX4200ESA

MAX4200ESA

Analog Devices, Inc.

IC BUFFER 1 CIRCUIT 8SOIC

4501

AD8037ARZ-REEL7

AD8037ARZ-REEL7

Analog Devices, Inc.

LOW DISTORTION, WIDE BANDWIDTH V

273

ADA4860-1YRJZ-RL7

ADA4860-1YRJZ-RL7

Analog Devices, Inc.

IC OPAMP CFA 1 CIRCUIT SOT23-6

5531

AD8244BRMZ

AD8244BRMZ

Analog Devices, Inc.

IC OPAMP JFET 4 CIRCUIT 10MSOP

188

LTC6102HVCMS8#TRPBF

LTC6102HVCMS8#TRPBF

Analog Devices, Inc.

IC CURR SENSE 1 CIRCUIT 8MSOP

0

OP97FSZ-REEL7

OP97FSZ-REEL7

Analog Devices, Inc.

IC OPAMP GP 1 CIRCUIT 8SOIC

7831

LT6204CGN#TRPBF

LT6204CGN#TRPBF

Analog Devices, Inc.

IC OPAMP GP 4 CIRCUIT 16SSOP

0

MAX4431ESA

MAX4431ESA

Analog Devices, Inc.

IC VOLTAGE FEEDBACK 1 CIRC 8SOIC

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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