Linear - Amplifiers - Instrumentation, OP Amps, Buffer Amps

Image Part Number Description / PDF Quantity Rfq
MAX4402AKA/V+T

MAX4402AKA/V+T

Maxim Integrated

IC OPAMP GP 2 CIRCUIT SOT23-8

0

MAX4132ESA+

MAX4132ESA+

Maxim Integrated

IC OPAMP GP 2 CIRCUIT 8SOIC

8313700

MAX4128ESA+

MAX4128ESA+

Maxim Integrated

IC OPAMP GP 2 CIRCUIT 8SOIC

70

MAX4124EUK+T

MAX4124EUK+T

Maxim Integrated

IC OPAMP GP 1 CIRCUIT SOT23-5

1641

MAX4038EUA+T

MAX4038EUA+T

Maxim Integrated

IC OPAMP GP 1 CIRCUIT 8UMAX

0

MAX4232AUA+T

MAX4232AUA+T

Maxim Integrated

IC OPAMP GP 2 CIRCUIT 8UMAX

160

MAX4092AUA+

MAX4092AUA+

Maxim Integrated

IC OPAMP GP 2 CIRCUIT 8UMAX

337

MAX412CSA+T

MAX412CSA+T

Maxim Integrated

IC OPAMP GP 2 CIRCUIT 8SOIC

2895

MAX4489AUA+T

MAX4489AUA+T

Maxim Integrated

IC OPAMP GP 2 CIRCUIT 8UMAX

5435

MAX4163EUA+T

MAX4163EUA+T

Maxim Integrated

IC OPAMP GP 2 CIRCUIT 8UMAX

3802

MAX4022EEE+

MAX4022EEE+

Maxim Integrated

IC BUFFER 4 CIRCUIT 16QSOP

101900

MAX4213EUA+

MAX4213EUA+

Maxim Integrated

IC OPAMP VFB 1 CIRCUIT 8UMAX

862

ICL7621BCPA+

ICL7621BCPA+

Maxim Integrated

IC OPAMP GP 2 CIRCUIT 8DIP

34150

MAX9637AXA+T

MAX9637AXA+T

Maxim Integrated

IC OPAMP GP 2 CIRCUIT SC70-8

3454

MAX4372TESA+

MAX4372TESA+

Maxim Integrated

IC CURR SENSE 1 CIRCUIT 8SOIC

107450400

MAX4218ESD+T

MAX4218ESD+T

Maxim Integrated

IC OPAMP VFB 3 CIRCUIT 14SOIC

0

MAX4291EUK+T

MAX4291EUK+T

Maxim Integrated

IC OPAMP GP 1 CIRCUIT SOT23-5

703

MAX4204ESA+

MAX4204ESA+

Maxim Integrated

IC BUFFER 2 CIRCUIT 8SOIC

218

MAX4475AUT/V+T

MAX4475AUT/V+T

Maxim Integrated

IC OPAMP GP 1 CIRCUIT SOT23-6

0

MAX9915EXT+T

MAX9915EXT+T

Maxim Integrated

IC OPAMP GP 1 CIRCUIT SC70-6

8175

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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