Linear - Amplifiers - Instrumentation, OP Amps, Buffer Amps

Image Part Number Description / PDF Quantity Rfq
MAX9922EUB+T

MAX9922EUB+T

Maxim Integrated

IC CURR SENSE 1 CIRCUIT 10UMAX

29452500

MAX9918ASA+T

MAX9918ASA+T

Maxim Integrated

IC CURR SENSE 1 CIRCUIT 8SOIC

2418

MAX4354EUD+

MAX4354EUD+

Maxim Integrated

IC OPAMP VFB 4 CIRCUIT 14TSSOP

37

MAX44284EAUT+T

MAX44284EAUT+T

Maxim Integrated

IC CURR SENSE 1 CIRCUIT SOT23-6

986

MAX40100ANT+T

MAX40100ANT+T

Maxim Integrated

IC OPAMP ZERO-DRIFT 1 CIRC 6WLP

673

MAX4204ESA+T

MAX4204ESA+T

Maxim Integrated

IC BUFFER 2 CIRCUIT 8SOIC

0

MAX4416ESA+

MAX4416ESA+

Maxim Integrated

IC OPAMP VFB 2 CIRCUIT 8SOIC

26

MAX4372HESA+T

MAX4372HESA+T

Maxim Integrated

IC CURR SENSE 1 CIRCUIT 8SOIC

0

ICL7611BCSA+

ICL7611BCSA+

Maxim Integrated

IC OPAMP GP 1 CIRCUIT 8SOIC

865000

MAX9620AXK+T

MAX9620AXK+T

Maxim Integrated

IC OPAMP ZERO-DRIFT 1CIRC SC70-5

2890

MAX4383EUD+

MAX4383EUD+

Maxim Integrated

IC OPAMP VFB 4 CIRCUIT 14TSSOP

143192

MAX40018ATA+T

MAX40018ATA+T

Maxim Integrated

IC OPAMP GP 2 CIRCUIT 8TDFN

12500

MAX4378FAUD+T

MAX4378FAUD+T

Maxim Integrated

IC CURR SENSE 4 CIRCUIT 14TSSOP

0

MAX4070AUA+T

MAX4070AUA+T

Maxim Integrated

IC CURR SENSE 1 CIRCUIT 8UMAX

12500

MAX4073FAUT+T

MAX4073FAUT+T

Maxim Integrated

IC CURR SENSE 1 CIRCUIT SOT23-6

257012500

MAX409BCSA+

MAX409BCSA+

Maxim Integrated

IC OPAMP GP 1 CIRCUIT 8SOIC

1503700

ICL7621DCPA+

ICL7621DCPA+

Maxim Integrated

IC OPAMP GP 2 CIRCUIT 8DIP

2150

MAX4294ESD+T

MAX4294ESD+T

Maxim Integrated

IC OPAMP GP 4 CIRCUIT 14SOIC

0

MAX44260AYT+T

MAX44260AYT+T

Maxim Integrated

IC OPAMP GP 1 CIRCUIT 6UTLGA

5000

MAX4238ASA+

MAX4238ASA+

Maxim Integrated

IC OPAMP GP 1 CIRCUIT 8SOIC

10963900

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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