Linear - Amplifiers - Instrumentation, OP Amps, Buffer Amps

Image Part Number Description / PDF Quantity Rfq
ISL55290IUZ

ISL55290IUZ

Intersil (Renesas Electronics America)

IC VOLTAGE FEEDBACK 2CIRC 10MSOP

66003

ISL55020IRZ

ISL55020IRZ

Intersil (Renesas Electronics America)

IC DIFF 1 CIRCUIT 16QFN

7425

ISL28110FBZ-T13

ISL28110FBZ-T13

Intersil (Renesas Electronics America)

IC OPAMP JFET 1 CIRCUIT 8SOIC

0

ISL28217FBBZ-T7

ISL28217FBBZ-T7

Intersil (Renesas Electronics America)

IC OPAMP GP 2 CIRCUIT 8SOIC

0

EL2245CS

EL2245CS

Intersil (Renesas Electronics America)

VIDEO AMPLIFIER

10803

EL8300ISZ

EL8300ISZ

Intersil (Renesas Electronics America)

IC VOLTAGE FEEDBACK 3CIRC 16SOIC

12465

EL5104IWZ-T7A

EL5104IWZ-T7A

Intersil (Renesas Electronics America)

IC OPAMP VFB 1 CIRCUIT SOT23-6

0

EL5175IYZ-T13

EL5175IYZ-T13

Intersil (Renesas Electronics America)

IC OPAMP DIFF 1 CIRCUIT 8MSOP

0

EL8401ISZ-T13

EL8401ISZ-T13

Intersil (Renesas Electronics America)

IC VOLTAGE FEEDBACK 4CIRC 14SOIC

43900

ISL28535FVZ-T13

ISL28535FVZ-T13

Intersil (Renesas Electronics America)

IC OPAMP ZER-DRIFT 1CIRC 14TSSOP

0

EL5362ISZ

EL5362ISZ

Intersil (Renesas Electronics America)

IC OPAMP CFA 3 CIRCUIT 16SOIC

0

EL8176FWZ-T7A

EL8176FWZ-T7A

Intersil (Renesas Electronics America)

IC OPAMP GP 1 CIRCUIT SOT23-6

226

ICL7612DCBA-T

ICL7612DCBA-T

Intersil (Renesas Electronics America)

IC GP OPAMP 1 CIRCUIT 8SOIC

900

ISL28108FBZ-T13

ISL28108FBZ-T13

Intersil (Renesas Electronics America)

IC OPAMP GP 1 CIRCUIT 8SOIC

0

HA5351IP

HA5351IP

Intersil (Renesas Electronics America)

SAMPLE AND HOLD CIRCUIT

0

ISL28230FRZ

ISL28230FRZ

Intersil (Renesas Electronics America)

IC OPAMP GP 2 CIRCUIT 8DFN

0

CA3140AMZ

CA3140AMZ

Intersil (Renesas Electronics America)

IC OPAMP GP 1 CIRCUIT 8SOIC

243215974

ISL28290FRUZ-T7

ISL28290FRUZ-T7

Intersil (Renesas Electronics America)

IC OPAMP VFB 2 CIRCUIT 10UTQFN

0

ISL28227FBZ-T7

ISL28227FBZ-T7

Intersil (Renesas Electronics America)

IC OPAMP GP 2 CIRCUIT 8SOIC

0

HA1-5104-2

HA1-5104-2

Intersil (Renesas Electronics America)

OPERATIONAL AMPLIFIER, 4 FUNC, 3

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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