Linear - Amplifiers - Instrumentation, OP Amps, Buffer Amps

Image Part Number Description / PDF Quantity Rfq
MAX4080SASA+

MAX4080SASA+

Maxim Integrated

IC CURR SENSE 1 CIRCUIT 8SOIC

2889

MAX4224ESA+

MAX4224ESA+

Maxim Integrated

IC OPAMP CFA 1 CIRCUIT 8SOIC

26300

MAX9928FAUA+T

MAX9928FAUA+T

Maxim Integrated

IC CURR SENSE 1 CIRCUIT 8UMAX

2073

MAX9919FASA/V+T

MAX9919FASA/V+T

Maxim Integrated

IC CURR SENSE 1 CIRCUIT 8SOIC

0

MAX40075AUT/V+T

MAX40075AUT/V+T

Maxim Integrated

SINGLE WIDEBAND LOW-NOISE LOW-BI

2500

MAX4436EUA+T

MAX4436EUA+T

Maxim Integrated

IC OPAMP VFB 2 CIRCUIT 8UMAX

0

MAX4081SASA+T

MAX4081SASA+T

Maxim Integrated

IC CURR SENSE 1 CIRCUIT 8SOIC

2500

MAX4081FAUA+T

MAX4081FAUA+T

Maxim Integrated

IC CURR SENSE 1 CIRCUIT 8UMAX

1253

MAX4494AUA+

MAX4494AUA+

Maxim Integrated

IC OPAMP GP 2 CIRCUIT 8UMAX

991300

MAX4252EUA+T

MAX4252EUA+T

Maxim Integrated

IC OPAMP GP 2 CIRCUIT 8UMAX

1728

MAX4418EUD+

MAX4418EUD+

Maxim Integrated

IC OPAMP VFB 4 CIRCUIT 14TSSOP

716432

MAX4094ASD+T

MAX4094ASD+T

Maxim Integrated

IC OPAMP GP 4 CIRCUIT 14SOIC

0

MAX4092ASA+

MAX4092ASA+

Maxim Integrated

IC OPAMP GP 2 CIRCUIT 8SOIC

1851600

MAX4378HASD+T

MAX4378HASD+T

Maxim Integrated

IC CURR SENSE 4 CIRCUIT 14SOIC

0

MAX4126ESA+

MAX4126ESA+

Maxim Integrated

IC OPAMP GP 2 CIRCUIT 8SOIC

1552

MAX40016ANL+T

MAX40016ANL+T

Maxim Integrated

IC CURR SENSE 1 CIRCUIT 15WLP

47500

MAX4378FAUD+

MAX4378FAUD+

Maxim Integrated

IC CURR SENSE 4 CIRCUIT 14TSSOP

390

MAX4377FAUA+T

MAX4377FAUA+T

Maxim Integrated

IC CURR SENSE 2 CIRCUIT 8UMAX

2500

MAX44285HAUA+

MAX44285HAUA+

Maxim Integrated

IC CURR SENSE 2 CIRCUIT 8UMAX

12100

MAX4165EUK+T

MAX4165EUK+T

Maxim Integrated

IC OPAMP GP 1 CIRCUIT SOT23-5

1965

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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