Linear - Amplifiers - Instrumentation, OP Amps, Buffer Amps

Image Part Number Description / PDF Quantity Rfq
MAX9911EXT+T

MAX9911EXT+T

Maxim Integrated

IC OPAMP GP 1 CIRCUIT SC70-6

2042

MAX4012EUK+T

MAX4012EUK+T

Maxim Integrated

IC OPAMP VFB 1 CIRCUIT SOT23-5

1990

MAX4123ESA+

MAX4123ESA+

Maxim Integrated

IC OPAMP GP 1 CIRCUIT 8SOIC

85513400

MAX4237AEUA+

MAX4237AEUA+

Maxim Integrated

IC OPAMP GP 1 CIRCUIT 8UMAX

6020850

MAX40088AUT+T

MAX40088AUT+T

Maxim Integrated

IC OPAMP GP 1 CIRCUIT SOT23-6

42500

MAX4377HAUA+

MAX4377HAUA+

Maxim Integrated

IC CURR SENSE 2 CIRCUIT 8UMAX

841650

MAX4216ESA+T

MAX4216ESA+T

Maxim Integrated

IC OPAMP VFB 2 CIRCUIT 8SOIC

0

MAX4239AUT+T

MAX4239AUT+T

Maxim Integrated

IC OPAMP GP 1 CIRCUIT SOT23-6

0

MAX9634FEUK+T

MAX9634FEUK+T

Maxim Integrated

IC CURR SENSE 1 CIRCUIT SOT23-5

0

MAX44251AUA+

MAX44251AUA+

Maxim Integrated

IC OPAMP ZERO-DRIFT 2 CIRC 8UMAX

1051

MAX4332ESA+

MAX4332ESA+

Maxim Integrated

IC OPAMP GP 2 CIRCUIT 8SOIC

1053

MAX40010TAUT+T

MAX40010TAUT+T

Maxim Integrated

IC CURR SENSE 1 CIRCUIT SOT23-6L

2500

MAX4484AUK+T

MAX4484AUK+T

Maxim Integrated

IC OPAMP GP 1 CIRCUIT SOT23-5

37500

MAX40056UAUA/V+

MAX40056UAUA/V+

Maxim Integrated

IC CURR SENSE 1 CIRCUIT 8UMAX

6491100

MAX4241EUA+T

MAX4241EUA+T

Maxim Integrated

IC OPAMP GP 1 CIRCUIT 8UMAX

0

MAX9944ATA+T

MAX9944ATA+T

Maxim Integrated

IC OPAMP GP 2 CIRCUIT 8TDFN

1833

MAX4476AUT+T

MAX4476AUT+T

Maxim Integrated

IC OPAMP GP 1 CIRCUIT SOT23-6

2609

MAX4207ETE+T

MAX4207ETE+T

Maxim Integrated

IC OPAMP LOGARITHMIC 1CIRC 16QFN

5000

MAX4402AKA+T

MAX4402AKA+T

Maxim Integrated

IC OPAMP GP 2 CIRCUIT SOT23-8

1804

MAX44242AUA+

MAX44242AUA+

Maxim Integrated

IC OPAMP GP 2 CIRCUIT 8UMAX

267

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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