Linear - Amplifiers - Instrumentation, OP Amps, Buffer Amps

Image Part Number Description / PDF Quantity Rfq
EL5123CY-T13

EL5123CY-T13

Intersil (Renesas Electronics America)

IC BUFFER 4 CIRCUIT 10MSOP

0

EL5327CR-T7

EL5327CR-T7

Intersil (Renesas Electronics America)

IC BUFFER 10 CIRCUIT 24TSSOP

0

ISL28190FRUZ-T7

ISL28190FRUZ-T7

Intersil (Renesas Electronics America)

IC OPAMP VFB 1 CIRCUIT 6UTDFN

0

EL5324IL

EL5324IL

Intersil (Renesas Electronics America)

IC BUFFER 10 CIRCUIT 32QFN

0

EL5392ACUZ

EL5392ACUZ

Intersil (Renesas Electronics America)

IC OPAMP CFA 3 CIRCUIT 16QSOP

0

EL5204IYZ-T13

EL5204IYZ-T13

Intersil (Renesas Electronics America)

IC OPAMP VFB 2 CIRCUIT 10MSOP

0

EL5378IU

EL5378IU

Intersil (Renesas Electronics America)

IC OPAMP DIFF 3 CIRCUIT 28QSOP

0

EL5260IY-T13

EL5260IY-T13

Intersil (Renesas Electronics America)

IC OPAMP CFA 2 CIRCUIT 10MSOP

0

EL2480CSZ-T13

EL2480CSZ-T13

Intersil (Renesas Electronics America)

IC OPAMP CFA 4 CIRCUIT 14SOIC

0

ISL28158FHZ-T7A

ISL28158FHZ-T7A

Intersil (Renesas Electronics America)

IC OPAMP GP 1 CIRCUIT SOT23-6

0

ISL28278FAZ

ISL28278FAZ

Intersil (Renesas Electronics America)

IC OPAMP GP 2 CIRCUIT 16QSOP

0

EL5427CL

EL5427CL

Intersil (Renesas Electronics America)

IC BUFFER 12 CIRCUIT 32QFN

0

EL5420TISZ-T7

EL5420TISZ-T7

Intersil (Renesas Electronics America)

IC OPAMP VFB 4 CIRCUIT 14SOIC

0

EL8178BIW-T7A

EL8178BIW-T7A

Intersil (Renesas Electronics America)

IC OPAMP GP 1 CIRCUIT SOT23-6

0

EL5173IYZ-T7

EL5173IYZ-T7

Intersil (Renesas Electronics America)

IC OPAMP DIFF 1 CIRCUIT 8MSOP

0

ISL76627ABZ

ISL76627ABZ

Intersil (Renesas Electronics America)

IC OPAMP GP 1 CIRCUIT 8SOIC

0

EL5324IRE-T7

EL5324IRE-T7

Intersil (Renesas Electronics America)

IC BUFFER 10 CIRCUIT 28HTSSOP

0

EL5246CSZ-T13

EL5246CSZ-T13

Intersil (Renesas Electronics America)

IC OPAMP VFB 2 CIRCUIT 14SOIC

0

EL8300IS-T13

EL8300IS-T13

Intersil (Renesas Electronics America)

IC OPAMP VFB 3 CIRCUIT 16SOIC

0

EL5205IS-T13

EL5205IS-T13

Intersil (Renesas Electronics America)

IC OPAMP VFB 2 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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