Linear - Amplifiers - Instrumentation, OP Amps, Buffer Amps

Image Part Number Description / PDF Quantity Rfq
MAX9923HEUB+

MAX9923HEUB+

Maxim Integrated

IC CURR SENSE 1 CIRCUIT 10UMAX

21592250

MAX4104ESA+

MAX4104ESA+

Maxim Integrated

IC OPAMP VFB 1 CIRCUIT 8SOIC

6754000

MAX4350EUK+T

MAX4350EUK+T

Maxim Integrated

IC OPAMP VFB 1 CIRCUIT SOT23-5

248815000

MAX4377FAUA+

MAX4377FAUA+

Maxim Integrated

IC CURR SENSE 2 CIRCUIT 8UMAX

2121050

MAX44267AUD+

MAX44267AUD+

Maxim Integrated

IC OPAMP GP 2 CIRCUIT 14TSSOP

615376

MAX4239ASA+

MAX4239ASA+

Maxim Integrated

IC OPAMP GP 1 CIRCUIT 8SOIC

6267600

MAX4417EUA+T

MAX4417EUA+T

Maxim Integrated

IC OPAMP VFB 2 CIRCUIT 8UMAX

7500

MAX4400AUK+T

MAX4400AUK+T

Maxim Integrated

IC OPAMP GP 1 CIRCUIT SOT23-5

79110000

MAX4081SAUA+T

MAX4081SAUA+T

Maxim Integrated

IC CURR SENSE 1 CIRCUIT 8UMAX

0

MAX9937AXK+T

MAX9937AXK+T

Maxim Integrated

IC CURR SENSE 1 CIRCUIT SC70-5

836

MAX4382EUD+T

MAX4382EUD+T

Maxim Integrated

IC OPAMP VFB 3 CIRCUIT 14TSSOP

5000

MAX44265EWT+T

MAX44265EWT+T

Maxim Integrated

IC OPAMP GP 1 CIRCUIT 6WLP

446647500

MAX4072AUA+T

MAX4072AUA+T

Maxim Integrated

IC CURR SENSE 1 CIRCUIT 8UMAX

0

MAX410ESA+

MAX410ESA+

Maxim Integrated

IC OPAMP GP 1 CIRCUIT 8SOIC

5801000

MAX4194ESA+

MAX4194ESA+

Maxim Integrated

IC INST AMP 1 CIRCUIT 8SOIC

3014

MAX4252EUA+

MAX4252EUA+

Maxim Integrated

IC OPAMP GP 2 CIRCUIT 8UMAX

3800650

MAX4380EUT+T

MAX4380EUT+T

Maxim Integrated

IC OPAMP VFB 1 CIRCUIT SOT23-6

7136

MAX4217EUA+

MAX4217EUA+

Maxim Integrated

IC BUFFER 2 CIRCUIT 8UMAX

251

MAX4412EUK+T

MAX4412EUK+T

Maxim Integrated

IC OPAMP VFB 1 CIRCUIT SOT23-5

44839

MAX4018EEE+

MAX4018EEE+

Maxim Integrated

IC OPAMP VFB 3 CIRCUIT 16QSOP

244

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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