Linear - Amplifiers - Instrumentation, OP Amps, Buffer Amps

Image Part Number Description / PDF Quantity Rfq
MAX4105EUK-T

MAX4105EUK-T

Analog Devices, Inc.

IC VOLT FEEDBACK 1CIRC SOT23-5

4510

AD8045ARDZ-REEL7

AD8045ARDZ-REEL7

Analog Devices, Inc.

IC OPAMP VFB 1 CIRCUIT 8SOIC

1349

LT6376IMS#PBF

LT6376IMS#PBF

Analog Devices, Inc.

IC OPAMP GP 1 CIRCUIT 16MSOP

0

AD8607ARMZ

AD8607ARMZ

Analog Devices, Inc.

IC OPAMP GP 2 CIRCUIT 8MSOP

0

LT1001CN8#PBF

LT1001CN8#PBF

Analog Devices, Inc.

IC OPAMP GP 1 CIRCUIT 8DIP

702

MAX4163EBL-T

MAX4163EBL-T

Analog Devices, Inc.

IC OPAMP RAIL-RAIL 8UCSP

38871

LT1815CS6#TRPBF

LT1815CS6#TRPBF

Analog Devices, Inc.

IC OPAMP VFB 1 CIRCUIT TSOT23-6

0

LT6221IDD#PBF

LT6221IDD#PBF

Analog Devices, Inc.

IC OPAMP GP 2 CIRCUIT 8DFN

0

AD8397ARDZ

AD8397ARDZ

Analog Devices, Inc.

IC OPAMP VFB 2 CIRCUIT 8SOIC

1564

LT6204CGN#PBF

LT6204CGN#PBF

Analog Devices, Inc.

IC OPAMP GP 4 CIRCUIT 16SSOP

0

LT6274IS5#TRMPBF

LT6274IS5#TRMPBF

Analog Devices, Inc.

IC OPAMP GP 1 CIRCUIT TSOT23-5

784

LTC6102CDD#TRPBF

LTC6102CDD#TRPBF

Analog Devices, Inc.

IC CURR SENSE 1 CIRCUIT 8DFN

0

LTC2057HVHMS#TRPBF

LTC2057HVHMS#TRPBF

Analog Devices, Inc.

IC OPAMP ZERO-DRIFT 1CIRC 10MSOP

0

AD8222HACPZ-RL

AD8222HACPZ-RL

Analog Devices, Inc.

IC INST AMP 2 CIRCUIT 16LFCSP

0

LT1210CR#PBF

LT1210CR#PBF

Analog Devices, Inc.

IC OPAMP CFA 1 CIRCUIT DDPAK-7

0

AD8672ARMZ

AD8672ARMZ

Analog Devices, Inc.

IC OPAMP GP 2 CIRCUIT 8MSOP

426

LT1995CDD#TRPBF

LT1995CDD#TRPBF

Analog Devices, Inc.

IC OPAMP PGA 1 CIRCUIT 10DFN

0

LTC6101HVAHS5#TRPBF

LTC6101HVAHS5#TRPBF

Analog Devices, Inc.

IC CURR SENSE 1 CIRCUIT TSOT23-5

0

AD8510BRZ

AD8510BRZ

Analog Devices, Inc.

IC OPAMP JFET 1 CIRCUIT 8SOIC

0

ADA4841-2YRMZ

ADA4841-2YRMZ

Analog Devices, Inc.

IC OPAMP VFB 2 CIRCUIT 8MSOP

3721

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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