Linear - Amplifiers - Instrumentation, OP Amps, Buffer Amps

Image Part Number Description / PDF Quantity Rfq
ICL7621BESA

ICL7621BESA

Maxim Integrated

IC OPAMP GP 2 CIRCUIT 8SOIC

0

MAX9912EUA+T

MAX9912EUA+T

Maxim Integrated

IC OPAMP GP 2 CIRCUIT 8UMAX

0

MAX4185EUB+T

MAX4185EUB+T

Maxim Integrated

IC OPAMP CFA 2 CIRCUIT 10UMAX

0

MAX4326EUA+TGA5

MAX4326EUA+TGA5

Maxim Integrated

INTEGRATED CIRCUIT

0

MAX4162ESA+TG002

MAX4162ESA+TG002

Maxim Integrated

INTEGRATED CIRCUIT

0

MAX471ESA

MAX471ESA

Maxim Integrated

IC CURR SENSE 1 CIRCUIT 8SOIC

0

MAX4040EUA-T

MAX4040EUA-T

Maxim Integrated

IC OPAMP GP 1 CIRCUIT 8UMAX

0

MAX4472ESD-T

MAX4472ESD-T

Maxim Integrated

IC OPAMP GP 4 CIRCUIT 14SOIC

0

MAX4075CAEUA

MAX4075CAEUA

Maxim Integrated

IC OPAMP GP 2 CIRCUIT 8UMAX

0

MAX437CSA

MAX437CSA

Maxim Integrated

IC OPAMP GP 1 CIRCUIT 8SOIC

0

MAX4493AXK-T

MAX4493AXK-T

Maxim Integrated

IC OPAMP GP 1 CIRCUIT SC70-5

0

MAX9934TALT+T

MAX9934TALT+T

Maxim Integrated

IC CURR SENSE 1 CIRCUIT 6UCSP

0

MAX4322EUK+G05

MAX4322EUK+G05

Maxim Integrated

IC POWER MANAGEMENT

0

MAX4450EUK-T

MAX4450EUK-T

Maxim Integrated

IC OPAMP VFB 1 CIRCUIT SOT23-5

0

MAX4430EUK+TG077

MAX4430EUK+TG077

Maxim Integrated

IC POWER MANAGEMENT

0

MAX4322EUK-T

MAX4322EUK-T

Maxim Integrated

IC OPAMP GP 1 CIRCUIT SOT23-5

0

MAX4491AUA-T

MAX4491AUA-T

Maxim Integrated

IC OPAMP GP 2 CIRCUIT 8UMAX

0

MAX4275AGESA

MAX4275AGESA

Maxim Integrated

IC OPAMP GP 2 CIRCUIT 8SOIC

0

MAX4470EUK-T

MAX4470EUK-T

Maxim Integrated

IC OPAMP GP 1 CIRCUIT SOT23-5

0

MAX4274BAEUA

MAX4274BAEUA

Maxim Integrated

IC OPAMP GP 2 CIRCUIT 8UMAX

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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