Linear - Amplifiers - Instrumentation, OP Amps, Buffer Amps

Image Part Number Description / PDF Quantity Rfq
MAX4073TAXK+T

MAX4073TAXK+T

Maxim Integrated

IC CURR SENSE 1 CIRCUIT SC70-5

58817500

MAX44250AUK+T

MAX44250AUK+T

Maxim Integrated

IC OPAMP ZER-DRIFT 1CIRC SOT23-5

3167

MAX4230AUK+T

MAX4230AUK+T

Maxim Integrated

IC OPAMP GP 1 CIRCUIT SOT23-5

132422500

MAX4196ESA+T

MAX4196ESA+T

Maxim Integrated

IC INST AMP 1 CIRCUIT 8SOIC

0

MAX4131EUA+T

MAX4131EUA+T

Maxim Integrated

IC OPAMP GP 1 CIRCUIT 8UMAX

10000

MAX407CSA+T

MAX407CSA+T

Maxim Integrated

IC OPAMP GP 2 CIRCUIT 8SOIC

0

MAX492ESA+T

MAX492ESA+T

Maxim Integrated

IC OPAMP GP 2 CIRCUIT 8SOIC

10000

MAX4214EUK+T

MAX4214EUK+T

Maxim Integrated

IC BUFFER 1 CIRCUIT SOT23-5

2817

MAX4326ESA+

MAX4326ESA+

Maxim Integrated

IC OPAMP GP 2 CIRCUIT 8SOIC

15834000

MAX4200EUK+T

MAX4200EUK+T

Maxim Integrated

IC BUFFER 1 CIRCUIT SOT23-5

0

MAX9910EXK+T

MAX9910EXK+T

Maxim Integrated

IC OPAMP GP 1 CIRCUIT SC70-5

2310

MAX4040EUA+T

MAX4040EUA+T

Maxim Integrated

IC OPAMP GP 1 CIRCUIT 8UMAX

5000

MAX4376TAUK+T

MAX4376TAUK+T

Maxim Integrated

IC CURR SENSE 1 CIRCUIT SOT23-5

923

MAX4382ESD+

MAX4382ESD+

Maxim Integrated

IC OPAMP VFB 3 CIRCUIT 14SOIC

1509700

MAX40204ANA+

MAX40204ANA+

Maxim Integrated

HIGH PRECISION CURRENT-SENSE AMP

1000

MAX44284FAUT+T

MAX44284FAUT+T

Maxim Integrated

IC CURR SENSE 1 CIRCUIT SOT23-6

343015000

MAX4488ASA+

MAX4488ASA+

Maxim Integrated

IC OPAMP GP 1 CIRCUIT 8SOIC

11055500

MAX4253EBC+T

MAX4253EBC+T

Maxim Integrated

IC OPAMP GP 2 CIRCUIT 12UCSP

32500

MAX4245AUT+T

MAX4245AUT+T

Maxim Integrated

IC OPAMP GP 1 CIRCUIT SOT23-6

275045000

MAX4489AUA/V+

MAX4489AUA/V+

Maxim Integrated

SOT23, LOW-NOISE, LOW-DISTORTION

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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