Linear - Amplifiers - Instrumentation, OP Amps, Buffer Amps

Image Part Number Description / PDF Quantity Rfq
MAX406BCSA+

MAX406BCSA+

Maxim Integrated

IC OPAMP GP 1 CIRCUIT 8SOIC

20815500

MAX4039EUB+T

MAX4039EUB+T

Maxim Integrated

IC OPAMP GP 1 CIRCUIT 10UMAX

7500

MAX4257ESA+

MAX4257ESA+

Maxim Integrated

IC OPAMP GP 2 CIRCUIT 8SOIC

1304900

MAX2471EUT+T

MAX2471EUT+T

Maxim Integrated

IC BUFFER 1 CIRCUIT SOT23-6

244915000

MAX44248AUA+T

MAX44248AUA+T

Maxim Integrated

IC OPAMP GP 2 CIRCUIT 8UMAX

2372

MAX40010FAUT+T

MAX40010FAUT+T

Maxim Integrated

IC CURR SENSE 1 CIRCUIT SOT23-6

29885000

MAX4354ESD+

MAX4354ESD+

Maxim Integrated

IC OPAMP VFB 4 CIRCUIT 14SOIC

0

MAX4234ASD+

MAX4234ASD+

Maxim Integrated

IC OPAMP GP 4 CIRCUIT 14SOIC

1754200

MAX4414ESA+

MAX4414ESA+

Maxim Integrated

IC OPAMP VFB 1 CIRCUIT 8SOIC

26600

MAX4131EUA+

MAX4131EUA+

Maxim Integrated

IC OPAMP GP 1 CIRCUIT 8UMAX

124450

MAX4494ASA+T

MAX4494ASA+T

Maxim Integrated

IC OPAMP GP 2 CIRCUIT 8SOIC

0

MAX4073HAXK+T

MAX4073HAXK+T

Maxim Integrated

IC CURR SENSE 1 CIRCUIT SC70-5

255312500

MAX4450EUK+T

MAX4450EUK+T

Maxim Integrated

IC OPAMP VFB 1 CIRCUIT SOT23-5

291017500

MAX9917EUB+

MAX9917EUB+

Maxim Integrated

IC OPAMP GP 2 CIRCUIT 10UMAX

189

MAX9943AUA+T

MAX9943AUA+T

Maxim Integrated

IC OPAMP GP 1 CIRCUIT 8UMAX

212

MAX412CPA+

MAX412CPA+

Maxim Integrated

IC OPAMP GP 2 CIRCUIT 8DIP

1931050

MAX4126ESA+T

MAX4126ESA+T

Maxim Integrated

IC OPAMP GP 2 CIRCUIT 8SOIC

0

MAX4020EEE+

MAX4020EEE+

Maxim Integrated

IC OPAMP GP 4 CIRCUIT 16QSOP

1081800

MAX4372HESA+

MAX4372HESA+

Maxim Integrated

IC CURR SENSE 1 CIRCUIT 8SOIC

39517300

MAX9922EUB+

MAX9922EUB+

Maxim Integrated

IC CURR SENSE 1 CIRCUIT 10UMAX

406200

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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