Linear - Amplifiers - Instrumentation, OP Amps, Buffer Amps

Image Part Number Description / PDF Quantity Rfq
MAX4227ESA+

MAX4227ESA+

Maxim Integrated

IC OPAMP CFA 2 CIRCUIT 8SOIC

2391200

MAX4168ESD+T

MAX4168ESD+T

Maxim Integrated

IC OPAMP GP 2 CIRCUIT 14SOIC

2500

MAX4488AUT+T

MAX4488AUT+T

Maxim Integrated

IC OPAMP GP 1 CIRCUIT SOT23-6

3004

MAX34406TETG+

MAX34406TETG+

Maxim Integrated

IC CURR SENSE 4 CIRCUIT 24QFN

225

MAX406ACPA+

MAX406ACPA+

Maxim Integrated

IC OPAMP GP 1 CIRCUIT 8DIP

361200

MAX44245ASD+T

MAX44245ASD+T

Maxim Integrated

IC OPAMP GP 4 CIRCUIT 14SOIC

0

MAX9920ASA/V+

MAX9920ASA/V+

Maxim Integrated

IC CURR SENSE 1 CIRCUIT 8SOIC

0

MAX409BESA+

MAX409BESA+

Maxim Integrated

IC OPAMP GP 1 CIRCUIT 8SOIC

2715800

MAX9619AXT+T

MAX9619AXT+T

Maxim Integrated

IC OPAMP ZERO-DRIFT 1CIRC SC70-6

214342500

MAX44242AUA+T

MAX44242AUA+T

Maxim Integrated

IC OPAMP GP 2 CIRCUIT 8UMAX

20000

MAX494CPD+

MAX494CPD+

Maxim Integrated

IC OPAMP GP 4 CIRCUIT 14DIP

252500

MAX4378HAUD+

MAX4378HAUD+

Maxim Integrated

IC CURR SENSE 4 CIRCUIT 14TSSOP

135960

MAX4323EUT+T

MAX4323EUT+T

Maxim Integrated

IC OPAMP GP 1 CIRCUIT SOT23-6

1260

MAX4017ESA+T

MAX4017ESA+T

Maxim Integrated

IC BUFFER 2 CIRCUIT 8SOIC

0

MAX4080FASA+

MAX4080FASA+

Maxim Integrated

IC CURR SENSE 1 CIRCUIT 8SOIC

6093000

MAX4105EUK+T

MAX4105EUK+T

Maxim Integrated

IC OPAMP VFB 1 CIRCUIT SOT23-5

0

MAX4460ESA+T

MAX4460ESA+T

Maxim Integrated

IC INST AMP 1 CIRCUIT 8SOIC

0

MAX4490AXK+T

MAX4490AXK+T

Maxim Integrated

IC OPAMP GP 1 CIRCUIT SC70-5

3825

MAX4495AUD+

MAX4495AUD+

Maxim Integrated

IC OPAMP GP 4 CIRCUIT 14TSSOP

101536

MAX9913EUB+

MAX9913EUB+

Maxim Integrated

IC OPAMP GP 2 CIRCUIT 10UMAX

422100

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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