Linear - Amplifiers - Instrumentation, OP Amps, Buffer Amps

Image Part Number Description / PDF Quantity Rfq
ISL28118FUZ-T13

ISL28118FUZ-T13

Intersil (Renesas Electronics America)

IC OPAMP GP 1 CIRCUIT 8MSOP

0

ISL28217FUZ-T7

ISL28217FUZ-T7

Intersil (Renesas Electronics America)

IC OPAMP GP 2 CIRCUIT 8MSOP

0

ISL55190IBZ

ISL55190IBZ

Intersil (Renesas Electronics America)

IC VOLTAGE FEEDBACK 1 CIRC 8SOIC

2406

EL5164IWZ-T7A

EL5164IWZ-T7A

Intersil (Renesas Electronics America)

IC OPAMP CFA 1 CIRCUIT SOT23-6

0

ISL28138FHZ-T7A

ISL28138FHZ-T7A

Intersil (Renesas Electronics America)

IC GP OPAMP 1 CIRCUIT SOT23-6

16400

EL5420CRZ-T7

EL5420CRZ-T7

Intersil (Renesas Electronics America)

IC OPAMP VFB 4 CIRCUIT 14TSSOP

0

ISL28218FBZ

ISL28218FBZ

Intersil (Renesas Electronics America)

IC OPAMP GP 2 CIRCUIT 8SOIC

0

EL5220TIYZ-T13

EL5220TIYZ-T13

Intersil (Renesas Electronics America)

IC OPAMP VFB 2 CIRCUIT 8MSOP

0

ISL28168FHZ-T7A

ISL28168FHZ-T7A

Intersil (Renesas Electronics America)

IC GP OPAMP 1 CIRCUIT SOT23-6

16310

EL5420CRZ

EL5420CRZ

Intersil (Renesas Electronics America)

IC OPAMP VFB 4 CIRCUIT 14TSSOP

0

ISL28005FH20Z-T7A

ISL28005FH20Z-T7A

Intersil (Renesas Electronics America)

IC CURR SENSE 1 CIRCUIT SOT23-5

312

EL5167IWZ-T7

EL5167IWZ-T7

Intersil (Renesas Electronics America)

IC OPAMP CFA 1 CIRCUIT SOT23-5

0

ISL28208FRTZ-T7

ISL28208FRTZ-T7

Intersil (Renesas Electronics America)

IC OPAMP GP 2 CIRCUIT 8TDFN

0

EL5364IUZ-T13

EL5364IUZ-T13

Intersil (Renesas Electronics America)

IC OPAMP CFA 3 CIRCUIT 16QSOP

0

EL5167IW-T7A

EL5167IW-T7A

Intersil (Renesas Electronics America)

IC CFA 1 CIRCUIT SOT23-5

48250

EL5250IY

EL5250IY

Intersil (Renesas Electronics America)

IC VOLTAGE FEEDBACK 2CIRC 10MSOP

1200

ISL28107FUZ-T7A

ISL28107FUZ-T7A

Intersil (Renesas Electronics America)

IC OPAMP GP 1 CIRCUIT 8MSOP

988

ISL28408FBZ-T7A

ISL28408FBZ-T7A

Intersil (Renesas Electronics America)

IC OPAMP GP 4 CIRCUIT 14SOIC

31

ICL7612DCPAZ

ICL7612DCPAZ

Intersil (Renesas Electronics America)

IC OPAMP GP 1 CIRCUIT 8DIP

0

ISL28433FVZ-T13

ISL28433FVZ-T13

Intersil (Renesas Electronics America)

IC OPAMP ZER-DRIFT 4CIRC 14TSSOP

27500

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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