Linear - Amplifiers - Instrumentation, OP Amps, Buffer Amps

Image Part Number Description / PDF Quantity Rfq
CA3140MZ

CA3140MZ

Intersil (Renesas Electronics America)

IC OPAMP GP 1 CIRCUIT 8SOIC

2629

ISL28118FUZ-T7

ISL28118FUZ-T7

Intersil (Renesas Electronics America)

IC OPAMP GP 1 CIRCUIT 8MSOP

0

ISL28417FVZ-T7A

ISL28417FVZ-T7A

Intersil (Renesas Electronics America)

IC OPAMP GP 4 CIRCUIT 14TSSOP

0

CA5260AM96

CA5260AM96

Intersil (Renesas Electronics America)

IC GP OPAMP 2 CIRCUIT 8SOIC

2744

EL5410CR

EL5410CR

Intersil (Renesas Electronics America)

IC VOLT FEEDBACK 4CIRC 14TSSOP

9154

ISL28208FUZ

ISL28208FUZ

Intersil (Renesas Electronics America)

IC OPAMP GP 2 CIRCUIT 8MSOP

1138

ISL28230CRZ-T7A

ISL28230CRZ-T7A

Intersil (Renesas Electronics America)

IC OPAMP GP 2 CIRCUIT 8DFN

692

CA5420AMZ

CA5420AMZ

Intersil (Renesas Electronics America)

IC OPAMP GP 1 CIRCUIT 8SOIC

0

EL5420CSZ-T13

EL5420CSZ-T13

Intersil (Renesas Electronics America)

IC OPAMP VFB 4 CIRCUIT 14SOIC

0

ISL28148FHZ-T7A

ISL28148FHZ-T7A

Intersil (Renesas Electronics America)

IC OPAMP GP 1 CIRCUIT SOT23-6

1121

HA1-2400-2

HA1-2400-2

Intersil (Renesas Electronics America)

4 CH PROGRAMMABLE AMPLIFIER

8038

ISL28236FBZ

ISL28236FBZ

Intersil (Renesas Electronics America)

IC OPAMP GP 2 CIRCUIT 8SOIC

0

EL5220TIYZ-T7

EL5220TIYZ-T7

Intersil (Renesas Electronics America)

IC OPAMP VFB 2 CIRCUIT 8MSOP

50264500

ISL28217FRTBZ

ISL28217FRTBZ

Intersil (Renesas Electronics America)

IC OPAMP GP 2 CIRCUIT 8TDFN

0

EL5167IC-T7

EL5167IC-T7

Intersil (Renesas Electronics America)

IC CFA 1 CIRCUIT SC70-5

9000

EL2180CS

EL2180CS

Intersil (Renesas Electronics America)

VIDEO AMPLIFIER

6536

ISL28005FH100Z-T7

ISL28005FH100Z-T7

Intersil (Renesas Electronics America)

IC CURR SENSE 1 CIRCUIT SOT23-5

0

ISL28433FVZ

ISL28433FVZ

Intersil (Renesas Electronics America)

IC OPAMP ZER-DRIFT 4CIRC 14TSSOP

0

ISL28006FHADJZ-T7A

ISL28006FHADJZ-T7A

Intersil (Renesas Electronics America)

IC CURR SENSE 1 CIRCUIT SOT23-6

0

ISL1572IRZ

ISL1572IRZ

Intersil (Renesas Electronics America)

IC OPAMP GP 2 CIRCUIT 16QFN

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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