Linear - Amplifiers - Instrumentation, OP Amps, Buffer Amps

Image Part Number Description / PDF Quantity Rfq
EL5262IYZ-T13

EL5262IYZ-T13

Intersil (Renesas Electronics America)

IC OPAMP CFA 2 CIRCUIT 10MSOP

0

ISL28217FBZ-T7A

ISL28217FBZ-T7A

Intersil (Renesas Electronics America)

IC OPAMP GP 2 CIRCUIT 8SOIC

779

EL5324IREZ-T13

EL5324IREZ-T13

Intersil (Renesas Electronics America)

IC BUFFER 10 CIRCUIT 28HTSSOP

0

ISL28166FHZ-T7

ISL28166FHZ-T7

Intersil (Renesas Electronics America)

IC GP OPAMP 1 CIRCUIT SOT23-6

690

EL5164ISZ-T7

EL5164ISZ-T7

Intersil (Renesas Electronics America)

IC OPAMP CFA 1 CIRCUIT 8SOIC

0

ISL28208FRTZ

ISL28208FRTZ

Intersil (Renesas Electronics America)

IC OPAMP GP 2 CIRCUIT 8TDFN

0

EL5165IWZ-T7A

EL5165IWZ-T7A

Intersil (Renesas Electronics America)

IC OPAMP CFA 1 CIRCUIT SOT23-5

247

EL5162ISZ-T7A

EL5162ISZ-T7A

Intersil (Renesas Electronics America)

IC OPAMP CFA 1 CIRCUIT 8SOIC

0

ISL28274FAZ-T7

ISL28274FAZ-T7

Intersil (Renesas Electronics America)

IC INST AMP 2 CIRCUIT 16QSOP

450

ISL28233FRZ-T7A

ISL28233FRZ-T7A

Intersil (Renesas Electronics America)

IC OPAMP ZERO-DRIFT 2 CIRC 8DFN

498

ISL28177FBZ-T7

ISL28177FBZ-T7

Intersil (Renesas Electronics America)

IC OPAMP GP 1 CIRCUIT 8SOIC

0

ISL55211IRTZ-T7A

ISL55211IRTZ-T7A

Intersil (Renesas Electronics America)

IC OPAMP DIFF 1 CIRCUIT 16QFN

0

HA3-2605-5

HA3-2605-5

Intersil (Renesas Electronics America)

HIGH INPUT IMPEDANCE OP AMP

3595

ISL28117FRTBZ-T7A

ISL28117FRTBZ-T7A

Intersil (Renesas Electronics America)

IC OPAMP GP 1 CIRCUIT 8TDFN

0

HFA1412IP

HFA1412IP

Intersil (Renesas Electronics America)

BUFFER AMPLIFIER

1066

ISL55210IRTZ-T7

ISL55210IRTZ-T7

Intersil (Renesas Electronics America)

IC OPAMP DIFF 1 CIRCUIT 16QFN

0

HFA1112IBZ

HFA1112IBZ

Intersil (Renesas Electronics America)

IC BUFFER 1 CIRCUIT 8SOIC

0

ISL28488FVZ

ISL28488FVZ

Intersil (Renesas Electronics America)

IC OPAMP GP 4 CIRCUIT 14TSSOP

0

EL2276CSZ

EL2276CSZ

Intersil (Renesas Electronics America)

IC CFA 2 CIRCUIT 14SOIC

4354

EL5175ISZ-T7

EL5175ISZ-T7

Intersil (Renesas Electronics America)

IC OPAMP DIFF 1 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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