Linear - Amplifiers - Instrumentation, OP Amps, Buffer Amps

Image Part Number Description / PDF Quantity Rfq
MAX4204EUA-T

MAX4204EUA-T

Maxim Integrated

IC BUFFER 2 CIRCUIT 8UMAX

0

MAX4462UETT+T

MAX4462UETT+T

Maxim Integrated

IC INST AMP 1 CIRCUIT 6TDFN

0

MAX4239ASA-T

MAX4239ASA-T

Maxim Integrated

IC OPAMP GP 1 CIRCUIT 8SOIC

0

MAX4041ESA

MAX4041ESA

Maxim Integrated

IC OPAMP GP 1 CIRCUIT 8SOIC

0

MAX4434EUK/V+T

MAX4434EUK/V+T

Maxim Integrated

IC OPAMP VFB 1 CIRCUIT SOT23-5

0

MAX4294EUD-T

MAX4294EUD-T

Maxim Integrated

IC OPAMP GP 4 CIRCUIT 14TSSOP

0

MAX471ESA+

MAX471ESA+

Maxim Integrated

IC CURR SENSE 1 CIRCUIT 8SOIC

0

MAX4432EUA+G077

MAX4432EUA+G077

Maxim Integrated

INTEGRATED CIRCUIT

0

MAX4242ESA-T

MAX4242ESA-T

Maxim Integrated

IC OPAMP GP 2 CIRCUIT 8SOIC

0

MAX4282EUA

MAX4282EUA

Maxim Integrated

IC OPAMP GP 2 CIRCUIT 8UMAX

0

MAX4403ASD-T

MAX4403ASD-T

Maxim Integrated

IC OPAMP GP 4 CIRCUIT 14SOIC

0

DS1843D+

DS1843D+

Maxim Integrated

IC OPAMP SAMPL/HOLD 1 CIRC 8UDFN

0

MAX4230AUK+TG103

MAX4230AUK+TG103

Maxim Integrated

HIGH-OUTPUT-DRIVE, 10MHZ, 10V/US

0

MAX4489AUA-T

MAX4489AUA-T

Maxim Integrated

IC OPAMP GP 2 CIRCUIT 8UMAX

0

MAX4275AKESA

MAX4275AKESA

Maxim Integrated

IC OPAMP GP 2 CIRCUIT 8SOIC

0

MAX4437EUA+T

MAX4437EUA+T

Maxim Integrated

IC OPAMP VFB 2 CIRCUIT 8UMAX

0

MAX4376FAUK+TC42

MAX4376FAUK+TC42

Maxim Integrated

SINGLE/DUAL/QUAD HIGH-SIDE CURRE

0

MAX4222EEE

MAX4222EEE

Maxim Integrated

IC BUFFER 4 CIRCUIT 16QSOP

0

MAX4091ASA-T

MAX4091ASA-T

Maxim Integrated

IC OPAMP GP 1 CIRCUIT 8SOIC

0

MAX4043ESD+

MAX4043ESD+

Maxim Integrated

IC OPAMP GP 2 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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