Linear - Amplifiers - Instrumentation, OP Amps, Buffer Amps

Image Part Number Description / PDF Quantity Rfq
EL5373IUZR5293-T7

EL5373IUZR5293-T7

Intersil (Renesas Electronics America)

IC OPAMP DIFF 3 CIRCUIT 24QSOP

0

EL5224IL-T13

EL5224IL-T13

Intersil (Renesas Electronics America)

IC BUFFER 8 CIRCUIT 24QFN

0

EL5103IW-T7

EL5103IW-T7

Intersil (Renesas Electronics America)

IC OPAMP VFB 1 CIRCUIT SOT23-5

0

EL5205IS-T7

EL5205IS-T7

Intersil (Renesas Electronics America)

IC OPAMP VFB 2 CIRCUIT 8SOIC

0

EL2386CS-T7

EL2386CS-T7

Intersil (Renesas Electronics America)

IC OPAMP CFA 3 CIRCUIT 16SOIC

0

EL5135IWZ-T7

EL5135IWZ-T7

Intersil (Renesas Electronics America)

IC OPAMP VFB 1 CIRCUIT SOT23-5

0

EL5811IREZ

EL5811IREZ

Intersil (Renesas Electronics America)

IC OPAMP GP 8 CIRCUIT 28HTSSOP

0

ISL28470FAZ

ISL28470FAZ

Intersil (Renesas Electronics America)

IC INST AMP 4 CIRCUIT 28QSOP

0

EL5251IS-T13

EL5251IS-T13

Intersil (Renesas Electronics America)

IC OPAMP VFB 2 CIRCUIT 8SOIC

0

ISL28127FRTBZ-T7A

ISL28127FRTBZ-T7A

Intersil (Renesas Electronics America)

IC OPAMP GP 1 CIRCUIT 8TDFN

0

ISL28617FVZ-T7

ISL28617FVZ-T7

Intersil (Renesas Electronics America)

IC INST AMP 1 CIRCUIT 24TSSOP

0

EL5412IR-T7

EL5412IR-T7

Intersil (Renesas Electronics America)

IC OPAMP VFB 4 CIRCUIT 14TSSOP

0

EL5811IREZ-T7

EL5811IREZ-T7

Intersil (Renesas Electronics America)

IC OPAMP GP 8 CIRCUIT 28HTSSOP

0

EL5224IRE-T7

EL5224IRE-T7

Intersil (Renesas Electronics America)

IC BUFFER 8 CIRCUIT 24HTSSOP

0

EL1516IY

EL1516IY

Intersil (Renesas Electronics America)

IC OPAMP DIFF 2 CIRCUIT 8MSOP

0

EL5104IW-T7A

EL5104IW-T7A

Intersil (Renesas Electronics America)

IC OPAMP VFB 1 CIRCUIT SOT23-6

0

EL8403IS-T13

EL8403IS-T13

Intersil (Renesas Electronics America)

IC OPAMP VFB 4 CIRCUIT 14SOIC

0

EL5163ICZ-T7A

EL5163ICZ-T7A

Intersil (Renesas Electronics America)

IC OPAMP CFA 1 CIRCUIT SC70-5

0

ISL28107FUZ-T13S2568

ISL28107FUZ-T13S2568

Intersil (Renesas Electronics America)

IC OPAMP GP 1 CIRCUIT 8MSOP

0

EL5244CS-T13

EL5244CS-T13

Intersil (Renesas Electronics America)

IC OPAMP VFB 2 CIRCUIT 8SOIC

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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