Linear - Amplifiers - Instrumentation, OP Amps, Buffer Amps

Image Part Number Description / PDF Quantity Rfq
EL5306IUZ

EL5306IUZ

Intersil (Renesas Electronics America)

IC OPAMP GP 3 CIRCUIT 16QSOP

0

ISL28130CEZ-T7A

ISL28130CEZ-T7A

Intersil (Renesas Electronics America)

IC OPAMP GP 1 CIRCUIT SC70-5

16750

ISL28246FBZ-T7

ISL28246FBZ-T7

Intersil (Renesas Electronics America)

IC GP OPAMP 2 CIRCUIT 8SOIC

4086

ISL28274FAZ

ISL28274FAZ

Intersil (Renesas Electronics America)

IC INST AMP 2 CIRCUIT 16QSOP

5280

CA5260E

CA5260E

Intersil (Renesas Electronics America)

OPERATIONAL AMPLIFIER

2896

ICL7612BCPA

ICL7612BCPA

Intersil (Renesas Electronics America)

IC GP OPAMP 1 CIRCUIT 8DIP

845

ISL28227FRTZ

ISL28227FRTZ

Intersil (Renesas Electronics America)

IC OPAMP GP 2 CIRCUIT 8TDFN

0

JM38510/12206BPA

JM38510/12206BPA

Intersil (Renesas Electronics America)

HIGH SLEW RATE OP AMP

220

ISL28130CEZ-T7

ISL28130CEZ-T7

Intersil (Renesas Electronics America)

IC OPAMP GP 1 CIRCUIT SC70-5

0

EL5420TIRZ-T13

EL5420TIRZ-T13

Intersil (Renesas Electronics America)

IC OPAMP VFB 4 CIRCUIT 14TSSOP

0

ISL28233FRZ-T13

ISL28233FRZ-T13

Intersil (Renesas Electronics America)

IC OPAMP ZERO-DRIFT 2 CIRC 8DFN

0

EL5192ACS

EL5192ACS

Intersil (Renesas Electronics America)

VIDEO AMPLIFIER

0

ICL7621DCPA

ICL7621DCPA

Intersil (Renesas Electronics America)

OPERATIONAL AMPLIFIER

2682

ISL28210FBZ-T13

ISL28210FBZ-T13

Intersil (Renesas Electronics America)

IC OPAMP JFET 2 CIRCUIT 8SOIC

0

ISL28230CBZ

ISL28230CBZ

Intersil (Renesas Electronics America)

IC OPAMP GP 2 CIRCUIT 8SOIC

0

ISL28227FUZ-T13

ISL28227FUZ-T13

Intersil (Renesas Electronics America)

IC OPAMP GP 2 CIRCUIT 8MSOP

0

ISL28227FUBZ-T13

ISL28227FUBZ-T13

Intersil (Renesas Electronics America)

IC OPAMP GP 2 CIRCUIT 8MSOP

0

ISL28290FUZ-T7

ISL28290FUZ-T7

Intersil (Renesas Electronics America)

IC OPAMP VFB 2 CIRCUIT 10MSOP

0

ISL28413FBZ

ISL28413FBZ

Intersil (Renesas Electronics America)

IC OPAMP GP 4 CIRCUIT 14SOIC

0

ICL7621DCBA

ICL7621DCBA

Intersil (Renesas Electronics America)

OPERATIONAL AMPLIFIER

244

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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