Linear - Amplifiers - Instrumentation, OP Amps, Buffer Amps

Image Part Number Description / PDF Quantity Rfq
CA3078AE

CA3078AE

Intersil (Renesas Electronics America)

OPERATIONAL AMPLIFIER

7927

ISL28233FBZ

ISL28233FBZ

Intersil (Renesas Electronics America)

IC OPAMP ZERO-DRIFT 2 CIRC 8SOIC

0

EL5105IWZ-T7

EL5105IWZ-T7

Intersil (Renesas Electronics America)

IC OPAMP VFB 1 CIRCUIT SOT23-6

0

ISL28218FUZ

ISL28218FUZ

Intersil (Renesas Electronics America)

IC OPAMP GP 2 CIRCUIT 8MSOP

0

EL2286CS

EL2286CS

Intersil (Renesas Electronics America)

VIDEO AMPLIFIER

6470

ISL28217FUZ-T7A

ISL28217FUZ-T7A

Intersil (Renesas Electronics America)

IC OPAMP GP 2 CIRCUIT 8MSOP

512

EL8302ISZ-T13

EL8302ISZ-T13

Intersil (Renesas Electronics America)

IC OPAMP VFB 3 CIRCUIT 16SOIC

0

EL5172ISZ-T7A

EL5172ISZ-T7A

Intersil (Renesas Electronics America)

IC OPAMP DIFF 1 CIRCUIT 8SOIC

0

EL8170FSZ-T7

EL8170FSZ-T7

Intersil (Renesas Electronics America)

IC INST AMP 1 CIRCUIT 8SOIC

0

ISL28005FH50Z-T7

ISL28005FH50Z-T7

Intersil (Renesas Electronics America)

IC CURR SENSE 1 CIRCUIT SOT23-5

0

ISL28488FAZ-T7

ISL28488FAZ-T7

Intersil (Renesas Electronics America)

IC GP OPAMP 4 CIRCUIT 16QSOP

5000

ISL28118MUZ-T7

ISL28118MUZ-T7

Intersil (Renesas Electronics America)

IC OPAMP GP 1 CIRCUIT 8MSOP

0

EL5211IYE

EL5211IYE

Intersil (Renesas Electronics America)

IC VOLT FEEDBACK 2CIRC 8HMSOP

9987

ISL28533FVZ-T7A

ISL28533FVZ-T7A

Intersil (Renesas Electronics America)

IC OPAMP ZER-DRIFT 1CIRC 14TSSOP

0

CA0358AE

CA0358AE

Intersil (Renesas Electronics America)

DUAL OPERATIONAL AMPLIFIER

34031

EL2276CS

EL2276CS

Intersil (Renesas Electronics America)

IC CFA 2 CIRCUIT 14SOIC

18719

ISL28290FUZ

ISL28290FUZ

Intersil (Renesas Electronics America)

IC OPAMP VFB 2 CIRCUIT 10MSOP

0

CA3240EZ

CA3240EZ

Intersil (Renesas Electronics America)

IC OPAMP GP 2 CIRCUIT 8DIP

4038

ISL55004IB

ISL55004IB

Intersil (Renesas Electronics America)

IC VOLTAGE FEEDBACK 4CIRC 14SOIC

11611

EL5211IYEZ-T13

EL5211IYEZ-T13

Intersil (Renesas Electronics America)

IC VOLT FEEDBACK 2CIRC 8HMSOP

2500

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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