Linear - Amplifiers - Instrumentation, OP Amps, Buffer Amps

Image Part Number Description / PDF Quantity Rfq
MAX4199ESA+

MAX4199ESA+

Maxim Integrated

IC OPAMP DIFF 1 CIRCUIT 8SOIC

300

MAX4215ESA+

MAX4215ESA+

Maxim Integrated

IC BUFFER 1 CIRCUIT 8SOIC

3096000

MAX4172EUA+

MAX4172EUA+

Maxim Integrated

IC CURR SENSE 1 CIRCUIT 8UMAX

874300

MAX9912EKA+T

MAX9912EKA+T

Maxim Integrated

IC OPAMP GP 2 CIRCUIT SOT23-8

1192

ICL7612BCSA+

ICL7612BCSA+

Maxim Integrated

IC OPAMP GP 1 CIRCUIT 8SOIC

241600

MAX4236BESA+

MAX4236BESA+

Maxim Integrated

IC OPAMP GP 1 CIRCUIT 8SOIC

4651300

MAX9920ASA+

MAX9920ASA+

Maxim Integrated

IC CURR SENSE 1 CIRCUIT 8SOIC

725300

MAX4460EUT+T

MAX4460EUT+T

Maxim Integrated

IC INST AMP 1 CIRCUIT SOT23-6

2256

MAX9944ASA+

MAX9944ASA+

Maxim Integrated

IC OPAMP GP 2 CIRCUIT 8SOIC

522

MAX9938FELT+T

MAX9938FELT+T

Maxim Integrated

IC CURR SENSE 1 CIRCUIT 6UDFN

2005

MAX4022ESD+

MAX4022ESD+

Maxim Integrated

IC BUFFER 4 CIRCUIT 14SOIC

1781300

MAX4208AUA+T

MAX4208AUA+T

Maxim Integrated

IC INST AMP 1 CIRCUIT 8UMAX

3577

MAX417ESA+T

MAX417ESA+T

Maxim Integrated

IC OPAMP GP 2 CIRCUIT 8SOIC

2500

MAX4304ESA+

MAX4304ESA+

Maxim Integrated

IC OPAMP VFB 1 CIRCUIT 8SOIC

2008600

ICL7612DCSA+

ICL7612DCSA+

Maxim Integrated

IC OPAMP GP 1 CIRCUIT 8SOIC

1005800

MAX44298UWE+T

MAX44298UWE+T

Maxim Integrated

IC CURR SENSE 1 CIRCUIT 16WLP

0

MAX44251AUA+T

MAX44251AUA+T

Maxim Integrated

IC OPAMP ZERO-DRIFT 2 CIRC 8UMAX

822

MAX4352EUK+T

MAX4352EUK+T

Maxim Integrated

IC OPAMP VFB 1 CIRCUIT SOT23-5

15000

MAX4036EXK+T

MAX4036EXK+T

Maxim Integrated

IC OPAMP GP 1 CIRCUIT SC70-5

313745000

MAX4231AUT+T

MAX4231AUT+T

Maxim Integrated

IC OPAMP GP 1 CIRCUIT SOT23-6

20517500

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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