Linear - Amplifiers - Instrumentation, OP Amps, Buffer Amps

Image Part Number Description / PDF Quantity Rfq
ISL28230FUZ

ISL28230FUZ

Intersil (Renesas Electronics America)

IC OPAMP GP 2 CIRCUIT 8MSOP

0

EL5175IS

EL5175IS

Intersil (Renesas Electronics America)

IC DIFF 1 CIRCUIT 8SOIC

967

ISL28430CVZ-T13

ISL28430CVZ-T13

Intersil (Renesas Electronics America)

IC OPAMP GP 4 CIRCUIT 14TSSOP

0

HA5351IBZ

HA5351IBZ

Intersil (Renesas Electronics America)

IC OPAMP SAMPL/HOLD 1 CIRC 8SOIC

925588

ISL28006FH100Z-T7

ISL28006FH100Z-T7

Intersil (Renesas Electronics America)

IC CURR SENSE 1 CIRCUIT SOT23-5

0

EL5378IUZ

EL5378IUZ

Intersil (Renesas Electronics America)

IC OPAMP DIFF 3 CIRCUIT 28QSOP

0

EL8172FSZ-T7

EL8172FSZ-T7

Intersil (Renesas Electronics America)

IC INST AMP 1 CIRCUIT 8SOIC

0

ISL28118MUZ-T13

ISL28118MUZ-T13

Intersil (Renesas Electronics America)

IC OPAMP GP 1 CIRCUIT 8MSOP

0

EL5308IUZ-T13

EL5308IUZ-T13

Intersil (Renesas Electronics America)

IC OPAMP GP 3 CIRCUIT 16QSOP

0

EL5163IWZ-T7

EL5163IWZ-T7

Intersil (Renesas Electronics America)

IC OPAMP CFA 1 CIRCUIT SOT23-5

36000

ISL28136FHZ-T7

ISL28136FHZ-T7

Intersil (Renesas Electronics America)

IC OPAMP GP 1 CIRCUIT SOT23-6

0

ISL55191IBZ

ISL55191IBZ

Intersil (Renesas Electronics America)

IC VOLTAGE FEEDBACK 1 CIRC 8SOIC

2374

CA2904E

CA2904E

Intersil (Renesas Electronics America)

DUAL OPERATIONAL AMPLIFIER

0

ISL28227FUBZ-T7A

ISL28227FUBZ-T7A

Intersil (Renesas Electronics America)

IC OPAMP GP 2 CIRCUIT 8MSOP

0

ISL55210IRTZ

ISL55210IRTZ

Intersil (Renesas Electronics America)

IC OPAMP DIFF 1 CIRCUIT 16QFN

62

ISL28118FUZ-T7A

ISL28118FUZ-T7A

Intersil (Renesas Electronics America)

IC OPAMP GP 1 CIRCUIT 8MSOP

0

ISL28138FBZ-T7

ISL28138FBZ-T7

Intersil (Renesas Electronics America)

IC GP OPAMP 1 CIRCUIT 8SOIC

6000

ISL28430FVZ

ISL28430FVZ

Intersil (Renesas Electronics America)

IC OPAMP GP 4 CIRCUIT 14TSSOP

0

EL2286CS-T13

EL2286CS-T13

Intersil (Renesas Electronics America)

VIDEO AMPLIFIER

5000

ISL28217FRTBZ-T13

ISL28217FRTBZ-T13

Intersil (Renesas Electronics America)

IC OPAMP GP 2 CIRCUIT 8TDFN

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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