Linear - Amplifiers - Instrumentation, OP Amps, Buffer Amps

Image Part Number Description / PDF Quantity Rfq
MAX4376HAUK/V+T

MAX4376HAUK/V+T

Maxim Integrated

IC CURR SENSE 1 CIRCUIT SOT23-5

47500

MAX4232AKA+T

MAX4232AKA+T

Maxim Integrated

IC OPAMP GP 2 CIRCUIT SOT23-8

804

MAX4172GUA+T

MAX4172GUA+T

Maxim Integrated

IC CURR SENSE 1 CIRCUIT 8UMAX

0

MAX410CPA+

MAX410CPA+

Maxim Integrated

IC OPAMP GP 1 CIRCUIT 8DIP

1785700

MAX44286TAZS+T

MAX44286TAZS+T

Maxim Integrated

IC CURR SENSE 1 CIRCUIT 4WLP

42500

MAX4016ESA+

MAX4016ESA+

Maxim Integrated

IC OPAMP VFB 2 CIRCUIT 8SOIC

6700

MAX4242EUA+T

MAX4242EUA+T

Maxim Integrated

IC OPAMP GP 2 CIRCUIT 8UMAX

0

MAX4383ESE+T

MAX4383ESE+T

Maxim Integrated

IC OPAMP VFB 4 CIRCUIT 16SOIC

0

MAX4166ESA+T

MAX4166ESA+T

Maxim Integrated

IC OPAMP GP 1 CIRCUIT 8SOIC

0

MAX4403ASD+T

MAX4403ASD+T

Maxim Integrated

IC OPAMP GP 4 CIRCUIT 14SOIC

0

MAX40089AUA+

MAX40089AUA+

Maxim Integrated

IC OPAMP GP 2 CIRCUIT 8UMAX

2052800

MAX44248ASA+T

MAX44248ASA+T

Maxim Integrated

IC OPAMP GP 2 CIRCUIT 8SOIC

5880

MAX9929FAUA+

MAX9929FAUA+

Maxim Integrated

IC CURR SENSE 1 CIRCUIT 8UMAX

866450

MAX4242ESA+

MAX4242ESA+

Maxim Integrated

IC OPAMP GP 2 CIRCUIT 8SOIC

20014300

MAX9939AUB+T

MAX9939AUB+T

Maxim Integrated

IC OPAMP PGA 2 CIRCUIT 10UMAX

2932

MAX44241AUA+T

MAX44241AUA+T

Maxim Integrated

IC OPAMP GP 1 CIRCUIT 8UMAX

111

MAX4168EUB+T

MAX4168EUB+T

Maxim Integrated

IC OPAMP GP 2 CIRCUIT 10UMAX

0

MAX4494ASA+

MAX4494ASA+

Maxim Integrated

IC OPAMP GP 2 CIRCUIT 8SOIC

9132300

MAX4216ESA+

MAX4216ESA+

Maxim Integrated

IC OPAMP VFB 2 CIRCUIT 8SOIC

95

MAX4173FESA+T

MAX4173FESA+T

Maxim Integrated

IC CURR SENSE 1 CIRCUIT 8SOIC

1303

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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