Linear - Amplifiers - Instrumentation, OP Amps, Buffer Amps

Image Part Number Description / PDF Quantity Rfq
MAX4483AUD+T

MAX4483AUD+T

Maxim Integrated

IC OPAMP GP 4 CIRCUIT 14TSSOP

0

MAX4294ESD+

MAX4294ESD+

Maxim Integrated

IC OPAMP GP 4 CIRCUIT 14SOIC

19513600

MAX9914EXK+T

MAX9914EXK+T

Maxim Integrated

IC OPAMP GP 1 CIRCUIT SC70-5

14134

MAX9920ASA+T

MAX9920ASA+T

Maxim Integrated

IC CURR SENSE 1 CIRCUIT 8SOIC

1538

MAX44267AUD+T

MAX44267AUD+T

Maxim Integrated

IC OPAMP GP 2 CIRCUIT 14TSSOP

0

MAX4163EBL+T

MAX4163EBL+T

Maxim Integrated

IC OPAMP GP 2 CIRCUIT 9UCSP

0

MAX4091ASA+

MAX4091ASA+

Maxim Integrated

IC OPAMP GP 1 CIRCUIT 8SOIC

36625700

MAX4232AUA+

MAX4232AUA+

Maxim Integrated

IC OPAMP GP 2 CIRCUIT 8UMAX

327

MAX4123ESA+T

MAX4123ESA+T

Maxim Integrated

IC OPAMP GP 1 CIRCUIT 8SOIC

0

MAX4077EUA+T

MAX4077EUA+T

Maxim Integrated

IC OPAMP GP 2 CIRCUIT 8UMAX

2500

MAX4453EKA+T

MAX4453EKA+T

Maxim Integrated

IC OPAMP VFB 2 CIRCUIT SOT23-8

1563

MAX4166EUA+

MAX4166EUA+

Maxim Integrated

IC OPAMP GP 1 CIRCUIT 8UMAX

381750

MAX44243AUD+

MAX44243AUD+

Maxim Integrated

IC OPAMP GP 4 CIRCUIT 14TSSOP

3232

MAX4462TETT+T

MAX4462TETT+T

Maxim Integrated

IC INST AMP 1 CIRCUIT 6TDFN

2522

MAX412BESA+

MAX412BESA+

Maxim Integrated

IC OPAMP GP 2 CIRCUIT 8SOIC

40

MAX4382ESD+T

MAX4382ESD+T

Maxim Integrated

IC OPAMP VFB 3 CIRCUIT 14SOIC

2500

MAX4281EUK+T

MAX4281EUK+T

Maxim Integrated

IC OPAMP GP 1 CIRCUIT SOT23-5

6357500

MAX4400AXK+T

MAX4400AXK+T

Maxim Integrated

IC OPAMP GP 1 CIRCUIT SC70-5

1472

MAX4016EUA+

MAX4016EUA+

Maxim Integrated

IC OPAMP VFB 2 CIRCUIT 8UMAX

2792350

MAX4222ESD+T

MAX4222ESD+T

Maxim Integrated

IC BUFFER 4 CIRCUIT 14SOIC

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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