Linear - Amplifiers - Instrumentation, OP Amps, Buffer Amps

Image Part Number Description / PDF Quantity Rfq
MAX4072AUA+

MAX4072AUA+

Maxim Integrated

IC CURR SENSE 1 CIRCUIT 8UMAX

1491200

MAX4251ESA+

MAX4251ESA+

Maxim Integrated

IC OPAMP GP 1 CIRCUIT 8SOIC

32916000

MAX44280AYT+T

MAX44280AYT+T

Maxim Integrated

IC OPAMP GP 1 CIRCUIT 6UTLGA

2147483647

MAX4212EUK+T

MAX4212EUK+T

Maxim Integrated

IC OPAMP VFB 1 CIRCUIT SOT23-5

2832

MAX4402AUA+T

MAX4402AUA+T

Maxim Integrated

IC OPAMP GP 2 CIRCUIT 8UMAX

0

MAX4132EUA+

MAX4132EUA+

Maxim Integrated

IC OPAMP GP 2 CIRCUIT 8UMAX

58650

MAX9617AXT+T

MAX9617AXT+T

Maxim Integrated

IC OPAMP ZERO-DRIFT 1CIRC SC70-6

338430000

MAX4125ESA+T

MAX4125ESA+T

Maxim Integrated

IC OPAMP GP 1 CIRCUIT 8SOIC

0

MAX4452EXK+T

MAX4452EXK+T

Maxim Integrated

IC OPAMP VFB 1 CIRCUIT SC70-5

1779

MAX4080FAUA+T

MAX4080FAUA+T

Maxim Integrated

IC CURR SENSE 1 CIRCUIT 8UMAX

0

MAX4376TASA+

MAX4376TASA+

Maxim Integrated

IC CURR SENSE 1 CIRCUIT 8SOIC

2349200

MAX4236BESA+T

MAX4236BESA+T

Maxim Integrated

IC OPAMP GP 1 CIRCUIT 8SOIC

0

MAX4094ASD+

MAX4094ASD+

Maxim Integrated

IC OPAMP GP 4 CIRCUIT 14SOIC

600550

MAX4081TASA+T

MAX4081TASA+T

Maxim Integrated

IC CURR SENSE 1 CIRCUIT 8SOIC

2307

MAX9938HEBS+TG45

MAX9938HEBS+TG45

Maxim Integrated

IC CURR SENSE 1 CIRCUIT 4UCSP

7500

MAX4080TAUA+

MAX4080TAUA+

Maxim Integrated

IC CURR SENSE 1 CIRCUIT 8UMAX

663

MAX4040EUA+

MAX4040EUA+

Maxim Integrated

IC OPAMP GP 1 CIRCUIT 8UMAX

941850

MAX4377FASA+

MAX4377FASA+

Maxim Integrated

IC CURR SENSE 2 CIRCUIT 8SOIC

4531400

MAX40242ANA+T

MAX40242ANA+T

Maxim Integrated

LOW-NOISE, LOW BIAS-CURRENT DUAL

117500

MAX494CSD+

MAX494CSD+

Maxim Integrated

IC OPAMP GP 4 CIRCUIT 14SOIC

15019100

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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