Linear - Amplifiers - Instrumentation, OP Amps, Buffer Amps

Image Part Number Description / PDF Quantity Rfq
MAX4249EUB+T

MAX4249EUB+T

Maxim Integrated

IC OPAMP GP 2 CIRCUIT 10UMAX

10000

MAX4493AXK+T

MAX4493AXK+T

Maxim Integrated

IC OPAMP GP 1 CIRCUIT SC70-5

2213

MAX4416ESA+T

MAX4416ESA+T

Maxim Integrated

IC OPAMP VFB 2 CIRCUIT 8SOIC

0

MAX4243EUB+

MAX4243EUB+

Maxim Integrated

IC OPAMP GP 2 CIRCUIT 10UMAX

1501550

MAX417ESA+

MAX417ESA+

Maxim Integrated

IC OPAMP GP 2 CIRCUIT 8SOIC

1056100

MAX4471EKA+T

MAX4471EKA+T

Maxim Integrated

IC OPAMP GP 2 CIRCUIT SOT23-8

1172

MAX40201FAUA+T

MAX40201FAUA+T

Maxim Integrated

IC CURR SENSE 2 CIRCUIT 8UMAX

0

MAX9634HEUK+T

MAX9634HEUK+T

Maxim Integrated

IC CURR SENSE 1 CIRCUIT SOT23-5

2276

MAX40007ANT+T

MAX40007ANT+T

Maxim Integrated

IC CMOS 1 CIRCUIT 6WLP

24117500

MAX4209HAUA+

MAX4209HAUA+

Maxim Integrated

IC INST AMP 1 CIRCUIT 8UMAX

1116

MAX4196ESA+

MAX4196ESA+

Maxim Integrated

IC INST AMP 1 CIRCUIT 8SOIC

60900

MAX4489ASA+T

MAX4489ASA+T

Maxim Integrated

IC OPAMP GP 2 CIRCUIT 8SOIC

0

MAX44243ASD+

MAX44243ASD+

Maxim Integrated

IC OPAMP GP 4 CIRCUIT 14SOIC

17601600

MAX4167EPA+

MAX4167EPA+

Maxim Integrated

IC OPAMP GP 2 CIRCUIT 8DIP

364250

MAX4305ESA+

MAX4305ESA+

Maxim Integrated

IC OPAMP VFB 1 CIRCUIT 8SOIC

21110300

MAX4289ESA+

MAX4289ESA+

Maxim Integrated

IC OPAMP GP 1 CIRCUIT 8SOIC

28110800

MAX4265ESA+

MAX4265ESA+

Maxim Integrated

IC OPAMP VFB 1 CIRCUIT 8SOIC

0

MAX4168ESD+

MAX4168ESD+

Maxim Integrated

IC OPAMP GP 2 CIRCUIT 14SOIC

27

MAX4020ESD+T

MAX4020ESD+T

Maxim Integrated

IC OPAMP VFB 4 CIRCUIT 14SOIC

0

MAX4123EUA+

MAX4123EUA+

Maxim Integrated

IC OPAMP GP 1 CIRCUIT 8UMAX

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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