Linear - Amplifiers - Instrumentation, OP Amps, Buffer Amps

Image Part Number Description / PDF Quantity Rfq
MAX4252EBL+T

MAX4252EBL+T

Maxim Integrated

IC OPAMP GP 2 CIRCUIT 8UCSP

1369222500

MAX4239ASA+T

MAX4239ASA+T

Maxim Integrated

IC OPAMP GP 1 CIRCUIT 8SOIC

0

MAX4130EUK+T

MAX4130EUK+T

Maxim Integrated

IC OPAMP GP 1 CIRCUIT SOT23-5

535

MAX494ESD+T

MAX494ESD+T

Maxim Integrated

IC OPAMP GP 4 CIRCUIT 14SOIC

0

MAX4282ESA+

MAX4282ESA+

Maxim Integrated

IC OPAMP GP 2 CIRCUIT 8SOIC

2033600

MAX4125ESA+

MAX4125ESA+

Maxim Integrated

IC OPAMP GP 1 CIRCUIT 8SOIC

2002300

MAX4416EUA+

MAX4416EUA+

Maxim Integrated

IC OPAMP VFB 2 CIRCUIT 8UMAX

132450

ICL7622DCPD+

ICL7622DCPD+

Maxim Integrated

IC OPAMP GP 2 CIRCUIT 14DIP

161625

MAX4376FAUK+TG103

MAX4376FAUK+TG103

Maxim Integrated

IC OPAMP CUR SENS 1.7MHZ SOT23-5

0

MAX4488AUA+

MAX4488AUA+

Maxim Integrated

IC OPAMP GP 1 CIRCUIT 8UMAX

156

MAX4488ASA+T

MAX4488ASA+T

Maxim Integrated

IC OPAMP GP 1 CIRCUIT 8SOIC

0

MAX4236EUT+T

MAX4236EUT+T

Maxim Integrated

IC OPAMP GP 1 CIRCUIT SOT23-6

5178

MAX44284FAWT+T

MAX44284FAWT+T

Maxim Integrated

IC CURR SENSE 1 CIRCUIT 6WLP

7282

MAX44285TAUA+T

MAX44285TAUA+T

Maxim Integrated

IC CURR SENSE 2 CIRCUIT 8UMAX

0

MAX4489ASA+

MAX4489ASA+

Maxim Integrated

IC OPAMP GP 2 CIRCUIT 8SOIC

78

MAX4352EXK+T

MAX4352EXK+T

Maxim Integrated

IC OPAMP VFB 1 CIRCUIT SC70-5

191412500

MAX40016ATE+

MAX40016ATE+

Maxim Integrated

IC CURR SENSE 1 CIRCUIT 16QFN

980

MAX4292ESA+T

MAX4292ESA+T

Maxim Integrated

IC OPAMP GP 2 CIRCUIT 8SOIC

0

MAX9923HEUB+T

MAX9923HEUB+T

Maxim Integrated

IC CURR SENSE 1 CIRCUIT 10UMAX

2500

MAX44260AXT+T

MAX44260AXT+T

Maxim Integrated

IC OPAMP GP 1 CIRCUIT SC70-6

13826

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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