Linear - Amplifiers - Instrumentation, OP Amps, Buffer Amps

Image Part Number Description / PDF Quantity Rfq
EL5172ISZ-T7

EL5172ISZ-T7

Intersil (Renesas Electronics America)

IC OPAMP DIFF 1 CIRCUIT 8SOIC

10

ISL28217FBBZ-T7A

ISL28217FBBZ-T7A

Intersil (Renesas Electronics America)

IC OPAMP GP 2 CIRCUIT 8SOIC

485

ISL28227FUZ

ISL28227FUZ

Intersil (Renesas Electronics America)

IC OPAMP GP 2 CIRCUIT 8MSOP

0

ISL28118FBZ-T13

ISL28118FBZ-T13

Intersil (Renesas Electronics America)

IC OPAMP GP 1 CIRCUIT 8SOIC

0

ISL28191FRUZ-T7

ISL28191FRUZ-T7

Intersil (Renesas Electronics America)

IC OPAMP VFB 1 CIRCUIT 6UTDFN

0

ISL28268FUZ

ISL28268FUZ

Intersil (Renesas Electronics America)

IC GP OPAMP 2 CIRCUIT 8MSOP

14802

ISL28207FBZ-T7

ISL28207FBZ-T7

Intersil (Renesas Electronics America)

IC OPAMP GP 2 CIRCUIT 8SOIC

0

ISL28288FBZ

ISL28288FBZ

Intersil (Renesas Electronics America)

IC OPAMP GP 2 CIRCUIT 8SOIC

0

ICL7650SCPA-1

ICL7650SCPA-1

Intersil (Renesas Electronics America)

IC ZERO-DRIFT 1 CIRCUIT 8DIP

524

ISL28195FHZ-T7A

ISL28195FHZ-T7A

Intersil (Renesas Electronics America)

IC GP OPAMP 1 CIRCUIT SOT23-6

5810

HA3-2841-5

HA3-2841-5

Intersil (Renesas Electronics America)

VIDEO AMPLIFIER

24451

ISL28233FUZ

ISL28233FUZ

Intersil (Renesas Electronics America)

IC OPAMP ZERO-DRIFT 2 CIRC 8MSOP

0

ICL7650SCPA-1Z

ICL7650SCPA-1Z

Intersil (Renesas Electronics America)

IC OPAMP ZERO-DRIFT 1 CIRC 8DIP

849

EL8170FSZ

EL8170FSZ

Intersil (Renesas Electronics America)

IC INST AMP 1 CIRCUIT 8SOIC

0

ISL28430CVZ-T7A

ISL28430CVZ-T7A

Intersil (Renesas Electronics America)

IC OPAMP GP 4 CIRCUIT 14TSSOP

296

ISL28217FRTZ

ISL28217FRTZ

Intersil (Renesas Electronics America)

IC OPAMP GP 2 CIRCUIT 8TDFN

0

ISL28414FVZ-T13

ISL28414FVZ-T13

Intersil (Renesas Electronics America)

IC OPAMP GP 4 CIRCUIT 14TSSOP

0

EL8300ISZ-T7

EL8300ISZ-T7

Intersil (Renesas Electronics America)

IC VOLTAGE FEEDBACK 3CIRC 16SOIC

14240

ISL28213FBZ

ISL28213FBZ

Intersil (Renesas Electronics America)

IC OPAMP GP 2 CIRCUIT 8SOIC

0

EL5177IYZ-T13

EL5177IYZ-T13

Intersil (Renesas Electronics America)

IC OPAMP DIFF 1 CIRCUIT 10MSOP

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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