Linear - Amplifiers - Instrumentation, OP Amps, Buffer Amps

Image Part Number Description / PDF Quantity Rfq
MAX4333ESD+

MAX4333ESD+

Maxim Integrated

IC OPAMP GP 2 CIRCUIT 14SOIC

2503550

MAX4238ASA+T

MAX4238ASA+T

Maxim Integrated

IC OPAMP GP 1 CIRCUIT 8SO

1107

MAX44259AUK+T

MAX44259AUK+T

Maxim Integrated

IC OPAMP GP 1 CIRCUIT SOT23-5

0

MAX9919NASA/V+

MAX9919NASA/V+

Maxim Integrated

IC CURR SENSE 1 CIRCUIT 8SOIC

1300

MAX4091ASA+T

MAX4091ASA+T

Maxim Integrated

IC OPAMP GP 1 CIRCUIT 8SOIC

0

MAX2470EUT+T

MAX2470EUT+T

Maxim Integrated

IC BUFFER 1 CIRCUIT SOT23-6

1482

MAX4413EKA+T

MAX4413EKA+T

Maxim Integrated

IC OPAMP VFB 2 CIRCUIT SOT23-8

4338

MAX4073TAUT+T

MAX4073TAUT+T

Maxim Integrated

IC CURR SENSE 1 CIRCUIT SOT23-6

228122500

MAX44285FAUA+

MAX44285FAUA+

Maxim Integrated

IC CURR SENSE 2 CIRCUIT 8UMAX

1450

MAX9938FEBS+TG45

MAX9938FEBS+TG45

Maxim Integrated

IC CURR SENSE 1 CIRCUIT 4UCSP

222500

MAX4020ESD+

MAX4020ESD+

Maxim Integrated

IC OPAMP VFB 4 CIRCUIT 14SOIC

93150

MAX4173FEUT+T

MAX4173FEUT+T

Maxim Integrated

IC CURR SENSE 1 CIRCUIT SOT23-6

106817500

MAX4246AUA+

MAX4246AUA+

Maxim Integrated

IC OPAMP GP 2 CIRCUIT 8UMAX

3001650

MAX4172ESA+

MAX4172ESA+

Maxim Integrated

IC CURR SENSE 1 CIRCUIT 8SOIC

1994

MAX4236BEUA+

MAX4236BEUA+

Maxim Integrated

IC OPAMP GP 1 CIRCUIT 8UMAX

242

MAX417CSA+

MAX417CSA+

Maxim Integrated

IC OPAMP GP 2 CIRCUIT 8SOIC

300

MAX4292EBL+T

MAX4292EBL+T

Maxim Integrated

IC OPAMP GP 2 CIRCUIT 9UCSP

10000

MAX44241AUA+

MAX44241AUA+

Maxim Integrated

IC OPAMP GP 1 CIRCUIT 8UMAX

234350

MAX4492AUD+

MAX4492AUD+

Maxim Integrated

IC OPAMP GP 4 CIRCUIT 14TSSOP

29763360

MAX4249ESD+

MAX4249ESD+

Maxim Integrated

IC OPAMP GP 2 CIRCUIT 14SOIC

2597850

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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