Linear - Amplifiers - Instrumentation, OP Amps, Buffer Amps

Image Part Number Description / PDF Quantity Rfq
ISL28413FVZ-T7

ISL28413FVZ-T7

Intersil (Renesas Electronics America)

IC OPAMP GP 4 CIRCUIT 14TSSOP

0

EL5202IY

EL5202IY

Intersil (Renesas Electronics America)

IC VOLTAGE FEEDBACK 2CIRC 10MSOP

342

EL5157IWZ-T7

EL5157IWZ-T7

Intersil (Renesas Electronics America)

IC VOLT FEEDBACK 1CIRC SOT23-5

27000

ISL28217FBZ-T7

ISL28217FBZ-T7

Intersil (Renesas Electronics America)

IC OPAMP GP 2 CIRCUIT 8SOIC

0

EL5174IS

EL5174IS

Intersil (Renesas Electronics America)

IC DIFF 1 CIRCUIT 8SOIC

10640

ISL28156FBZ

ISL28156FBZ

Intersil (Renesas Electronics America)

IC GP OPAMP 1 CIRCUIT 8SOIC

1924

ISL28134FHZ-T7

ISL28134FHZ-T7

Intersil (Renesas Electronics America)

IC OPAMP ZER-DRIFT 1CIRC SOT23-5

0

ISL28230FRZ-T7

ISL28230FRZ-T7

Intersil (Renesas Electronics America)

IC OPAMP GP 2 CIRCUIT 8DFN

0

EL5160IWZ-T7A

EL5160IWZ-T7A

Intersil (Renesas Electronics America)

IC OPAMP CFA 1 CIRCUIT SOT23-6

0

ISL28207FUZ-T13

ISL28207FUZ-T13

Intersil (Renesas Electronics America)

IC OPAMP GP 2 CIRCUIT 8MSOP

0

ICL7611DCBA-T

ICL7611DCBA-T

Intersil (Renesas Electronics America)

IC GP OPAMP 1 CIRCUIT 8SOIC

20000

ISL28118FUZ

ISL28118FUZ

Intersil (Renesas Electronics America)

IC OPAMP GP 1 CIRCUIT 8MSOP

0

EL2228CS

EL2228CS

Intersil (Renesas Electronics America)

OPERATIONAL AMPLIFIER

1552

ISL28478FAZ

ISL28478FAZ

Intersil (Renesas Electronics America)

IC GP OPAMP 4 CIRCUIT 16QSOP

370

ISL28325FBZ-T7

ISL28325FBZ-T7

Intersil (Renesas Electronics America)

IC OPAMP GP 2 CIRCUIT 8SOIC

0

EL5236ISZ

EL5236ISZ

Intersil (Renesas Electronics America)

IC VOLTAGE FEEDBACK 2 CIRC 8SOIC

45299

CA3420EZ

CA3420EZ

Intersil (Renesas Electronics America)

IC OPAMP GP 1 CIRCUIT 8DIP

0

ISL55001IBZ-T7

ISL55001IBZ-T7

Intersil (Renesas Electronics America)

IC OPAMP VFB 1 CIRCUIT 8SOIC

1578

ISL28291FBZ

ISL28291FBZ

Intersil (Renesas Electronics America)

IC OPAMP VFB 2 CIRCUIT 8SOIC

31

EL5160ISZ-T13

EL5160ISZ-T13

Intersil (Renesas Electronics America)

IC OPAMP CFA 1 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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