Linear - Amplifiers - Instrumentation, OP Amps, Buffer Amps

Image Part Number Description / PDF Quantity Rfq
ISL28233FUZ-T7

ISL28233FUZ-T7

Intersil (Renesas Electronics America)

IC OPAMP ZERO-DRIFT 2 CIRC 8MSOP

0

ISL28208FBZ

ISL28208FBZ

Intersil (Renesas Electronics America)

IC OPAMP GP 2 CIRCUIT 8SOIC

0

EL8201ISZ

EL8201ISZ

Intersil (Renesas Electronics America)

IC OPAMP VFB 2 CIRCUIT 8SOIC

0

ICL7621DCBA-T

ICL7621DCBA-T

Intersil (Renesas Electronics America)

IC GP OPAMP 2 CIRCUIT 8SOIC

574

EL5220TILZ-T13

EL5220TILZ-T13

Intersil (Renesas Electronics America)

IC OPAMP VFB 2 CIRCUIT 8DFN

0

EL8176AIWZ-T7A

EL8176AIWZ-T7A

Intersil (Renesas Electronics America)

IC OPAMP GP 1 CIRCUIT SOT23-6

199

HA1-2404-4

HA1-2404-4

Intersil (Renesas Electronics America)

IC GP OPAMP 4 CIRCUIT 16CERDIP

20

ISL28230FRZ-T7A

ISL28230FRZ-T7A

Intersil (Renesas Electronics America)

IC OPAMP GP 2 CIRCUIT 8DFN

121

HA5351IB

HA5351IB

Intersil (Renesas Electronics America)

IC SAMPL/HOLD 1 CIRCUIT 8SOIC

527

ISL24020IHTZ-T7

ISL24020IHTZ-T7

Intersil (Renesas Electronics America)

IC OPAMP GP 1 CIRCUIT TSOT23-5

0

ISL28433FBZ-T7

ISL28433FBZ-T7

Intersil (Renesas Electronics America)

IC OPAMP ZERO-DRIFT 4CIRC 14SOIC

0

ISL28414FVZ-T7

ISL28414FVZ-T7

Intersil (Renesas Electronics America)

IC OPAMP GP 4 CIRCUIT 14TSSOP

0

ISL28407FBZ-T7A

ISL28407FBZ-T7A

Intersil (Renesas Electronics America)

IC OPAMP GP 4 CIRCUIT 14SOIC

429

EL5324IREZ

EL5324IREZ

Intersil (Renesas Electronics America)

BUFFER AMPLIFIER, 10 FUNC, CMOS,

0

ISL28208FUZ-T7

ISL28208FUZ-T7

Intersil (Renesas Electronics America)

IC OPAMP GP 2 CIRCUIT 8MSOP

0

EL5252IY

EL5252IY

Intersil (Renesas Electronics America)

IC VOLTAGE FEEDBACK 2CIRC 10MSOP

3863

EL5220CYZ

EL5220CYZ

Intersil (Renesas Electronics America)

IC OPAMP VFB 2 CIRCUIT 8MSOP

0

CA3140EZ

CA3140EZ

Intersil (Renesas Electronics America)

IC OPAMP GP 1 CIRCUIT 8DIP

2936

ISL28246FUZ

ISL28246FUZ

Intersil (Renesas Electronics America)

IC GP OPAMP 2 CIRCUIT 8MSOP

32050

EL5120IWT-T7A

EL5120IWT-T7A

Intersil (Renesas Electronics America)

IC VOLT FEEDBACK 1 CIRC TSOT23-5

10722

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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