Linear - Amplifiers - Instrumentation, OP Amps, Buffer Amps

Image Part Number Description / PDF Quantity Rfq
MAX4331ESA+T

MAX4331ESA+T

Maxim Integrated

IC OPAMP GP 1 CIRCUIT 8SOIC

0

MAX4043EUB+

MAX4043EUB+

Maxim Integrated

IC OPAMP GP 2 CIRCUIT 10UMAX

185

MAX4376FAUK/V+T

MAX4376FAUK/V+T

Maxim Integrated

IC CURR SENSE 1 CIRCUIT SOT23-5

87500

MAX4333EUB+T

MAX4333EUB+T

Maxim Integrated

IC OPAMP GP 2 CIRCUIT 10UMAX

0

MAX4080FAUA+

MAX4080FAUA+

Maxim Integrated

IC CURR SENSE 1 CIRCUIT 8UMAX

261750

MAX40088AUT+

MAX40088AUT+

Maxim Integrated

IC OPAMP GP 1 CIRCUIT SOT23-6

2590

MAX44285HAUA+T

MAX44285HAUA+T

Maxim Integrated

IC CURR SENSE 2 CIRCUIT 8UMAX

7500

MAX4237AESA+

MAX4237AESA+

Maxim Integrated

IC OPAMP GP 1 CIRCUIT 8SOIC

238

MAX34406HETG+T

MAX34406HETG+T

Maxim Integrated

IC CURR SENSE 4 CIRCUIT 24QFN

0

MAX4474ESA+

MAX4474ESA+

Maxim Integrated

IC OPAMP GP 2 CIRCUIT 8SOIC

512600

MAX4384EUP+

MAX4384EUP+

Maxim Integrated

IC OPAMP VFB 4 CIRCUIT 20TSSOP

1484588

MAX9938FEUK+T

MAX9938FEUK+T

Maxim Integrated

IC CURR SENSE 1 CIRCUIT SOT23-5

17823

MAX44286FAZS+T

MAX44286FAZS+T

Maxim Integrated

IC CURR SENSE 1 CIRCUIT 4WLP

97500

MAX4238ATT+T

MAX4238ATT+T

Maxim Integrated

IC OPAMP GP 1 CIRCUIT 6TDFN

2088

MAX4233AUB+

MAX4233AUB+

Maxim Integrated

IC OPAMP GP 2 CIRCUIT 10UMAX

810

MAX4491AKA+T

MAX4491AKA+T

Maxim Integrated

IC OPAMP GP 2 CIRCUIT SOT23-8

1222

MAX40056TAUA+

MAX40056TAUA+

Maxim Integrated

IC CURR SENSE 1 CIRCUIT W/PWM

529

MAX4474EKA+T

MAX4474EKA+T

Maxim Integrated

IC OPAMP GP 2 CIRCUIT SOT23-8

20000

MAX4218EEE+T

MAX4218EEE+T

Maxim Integrated

IC OPAMP VFB 3 CIRCUIT 16QSOP

0

MAX4234ASD+T

MAX4234ASD+T

Maxim Integrated

IC OPAMP GP 4 CIRCUIT 14SOIC

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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