Linear - Amplifiers - Instrumentation, OP Amps, Buffer Amps

Image Part Number Description / PDF Quantity Rfq
ISL55004IBZ-T13

ISL55004IBZ-T13

Intersil (Renesas Electronics America)

IC OPAMP VFB 4 CIRCUIT 14SOIC

0

ISL28633FVZ-T13

ISL28633FVZ-T13

Intersil (Renesas Electronics America)

IC OPAMP ZER-DRIFT 1CIRC 14TSSOP

0

ISL28134IBZ

ISL28134IBZ

Intersil (Renesas Electronics America)

IC OPAMP ZERO-DRIFT 1 CIRC 8SOIC

0

CA3130MZ

CA3130MZ

Intersil (Renesas Electronics America)

IC OPAMP GP 1 CIRCUIT 8SOIC

0

ISL28408FBZ-T7

ISL28408FBZ-T7

Intersil (Renesas Electronics America)

IC OPAMP GP 4 CIRCUIT 14SOIC

3000

ISL28227FUZ-T7

ISL28227FUZ-T7

Intersil (Renesas Electronics America)

IC OPAMP GP 2 CIRCUIT 8MSOP

0

ISL28248FBZ-T7

ISL28248FBZ-T7

Intersil (Renesas Electronics America)

IC OPAMP GP 2 CIRCUIT 8SOIC

0

EL5174ISZ-T13

EL5174ISZ-T13

Intersil (Renesas Electronics America)

IC OPAMP DIFF 1 CIRCUIT 8SOIC

0

ISL28535FVZ-T7A

ISL28535FVZ-T7A

Intersil (Renesas Electronics America)

IC OPAMP ZER-DRIFT 1CIRC 14TSSOP

0

ISL28218FBZ-T13

ISL28218FBZ-T13

Intersil (Renesas Electronics America)

IC OPAMP GP 2 CIRCUIT 8SOIC

0

EL8172ISZ-T7

EL8172ISZ-T7

Intersil (Renesas Electronics America)

IC INST AMP 1 CIRCUIT 8SOIC

530

EL5378IUZ-T7

EL5378IUZ-T7

Intersil (Renesas Electronics America)

IC OPAMP DIFF 3 CIRCUIT 28QSOP

0

EL5153IWZ-T7A

EL5153IWZ-T7A

Intersil (Renesas Electronics America)

IC VOLT FEEDBACK 1CIRC SOT23-5

25980

EL5160ISZ-T7

EL5160ISZ-T7

Intersil (Renesas Electronics America)

IC OPAMP CFA 1 CIRCUIT 8SOIC

0

ISL28417FVZ-T7

ISL28417FVZ-T7

Intersil (Renesas Electronics America)

IC OPAMP GP 4 CIRCUIT 14TSSOP

0

EL5175ISZ-T13

EL5175ISZ-T13

Intersil (Renesas Electronics America)

IC OPAMP DIFF 1 CIRCUIT 8SOIC

0

ISL28217FUZ-T13

ISL28217FUZ-T13

Intersil (Renesas Electronics America)

IC OPAMP GP 2 CIRCUIT 8MSOP

0

ISL28634FVZ

ISL28634FVZ

Intersil (Renesas Electronics America)

IC OPAMP ZER-DRIFT 1CIRC 14TSSOP

0

HFA1100IP

HFA1100IP

Intersil (Renesas Electronics America)

VIDEO AMPLIFIER

2842

ISL1572IUEZ-T7

ISL1572IUEZ-T7

Intersil (Renesas Electronics America)

IC OPAMP GP 2 CIRCUIT 10HMSOP

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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