Linear - Amplifiers - Instrumentation, OP Amps, Buffer Amps

Image Part Number Description / PDF Quantity Rfq
LT1101CN8#PBF

LT1101CN8#PBF

Analog Devices, Inc.

IC INST AMP 1 CIRCUIT 8DIP

683

LT6370IDD#PBF

LT6370IDD#PBF

Analog Devices, Inc.

IC INST AMP 1 CIRCUIT 10DFN

39

LT1358CS8#TRPBF

LT1358CS8#TRPBF

Analog Devices, Inc.

IC OPAMP VFB 2 CIRCUIT 8SO

4176

LT1999HMS8-50F#WTRPBF

LT1999HMS8-50F#WTRPBF

Analog Devices, Inc.

IC CURR SENSE 1 CIRCUIT 8MSOP

0

AD8091ART-REEL

AD8091ART-REEL

Analog Devices, Inc.

IC VOLT FEEDBACK 1CIRC SOT23-5

29840

AD8031ARTZ-R2

AD8031ARTZ-R2

Analog Devices, Inc.

IC OPAMP VFB 1 CIRCUIT SOT23-5

3808

MAX4490AUK-T

MAX4490AUK-T

Analog Devices, Inc.

IC GP OPAMP 1 CIRCUIT SOT23-5

29500

AD8476BRMZ-RL

AD8476BRMZ-RL

Analog Devices, Inc.

IC OPAMP DIFF 1 CIRCUIT 8MSOP

0

OP237EN#PBF

OP237EN#PBF

Analog Devices, Inc.

IC OPAMP GP 2 CIRCUIT 14DIP

0

MAX427CPA+

MAX427CPA+

Analog Devices, Inc.

PRECISION OPERATIONAL AMPLIFIER

11886

MAX4402ASA+T

MAX4402ASA+T

Analog Devices, Inc.

MAX4402 DUAL, LOW-COST, SINGLE-S

7500

LT1793AIS8#PBF

LT1793AIS8#PBF

Analog Devices, Inc.

IC OPAMP JFET 1 CIRCUIT 8SO

304

AD8602AR-REEL

AD8602AR-REEL

Analog Devices, Inc.

IC GP OPAMP 2 CIRCUIT 8SOIC

9000

AD8555ARZ

AD8555ARZ

Analog Devices, Inc.

IC OPAMP ZERO-DRIFT 1 CIRC 8SOIC

79

LTC6259IMS#TRPBF

LTC6259IMS#TRPBF

Analog Devices, Inc.

IC OPAMP GP 2 CIRCUIT 10MSOP

0

LT1633IS#TRPBF

LT1633IS#TRPBF

Analog Devices, Inc.

IC OPAMP GP 4 CIRCUIT 14SO

0

MXL1001ACN8

MXL1001ACN8

Analog Devices, Inc.

OPERATIONAL AMPLIFIER

774

LT1802IS#TRPBF

LT1802IS#TRPBF

Analog Devices, Inc.

IC OPAMP GP 4 CIRCUIT 14SO

0

MAX4350EXK+

MAX4350EXK+

Analog Devices, Inc.

MAX4350 ULTRA-SMALL, LOW-COST, 2

1786

LTC2052HS#PBF

LTC2052HS#PBF

Analog Devices, Inc.

IC OPAMP ZERO-DRIFT 4 CIRC 14SO

165

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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