Linear - Amplifiers - Instrumentation, OP Amps, Buffer Amps

Image Part Number Description / PDF Quantity Rfq
HA2-5160-2

HA2-5160-2

Intersil (Renesas Electronics America)

OPERATIONAL AMPLIFIER

328

CA3260E

CA3260E

Intersil (Renesas Electronics America)

OPERATIONAL AMPLIFIER

0

ISL28272FAZ

ISL28272FAZ

Intersil (Renesas Electronics America)

IC INST AMP 2 CIRCUIT 16QSOP

1950

ISL28430FBZ-T7

ISL28430FBZ-T7

Intersil (Renesas Electronics America)

IC OPAMP GP 4 CIRCUIT 14SOIC

0

ISL28233IUZ

ISL28233IUZ

Intersil (Renesas Electronics America)

IC ZERO-DRIFT 2 CIRCUIT 8MSOP

3509

HA9P5320-5

HA9P5320-5

Intersil (Renesas Electronics America)

IC SAMPL/HOLD 1 CIRCUIT 16SOIC

939

EL8401IUZ-T7

EL8401IUZ-T7

Intersil (Renesas Electronics America)

IC VOLTAGE FEEDBACK 4CIRC 16QSOP

21000

EL5364IUZA-T7

EL5364IUZA-T7

Intersil (Renesas Electronics America)

IC OPAMP CFA 3 CIRCUIT 16QSOP

0

ISL28217FBZ

ISL28217FBZ

Intersil (Renesas Electronics America)

IC OPAMP GP 2 CIRCUIT 8SOIC

0

EL2227CS

EL2227CS

Intersil (Renesas Electronics America)

IC VOLTAGE FEEDBACK 2 CIRC 8SOIC

59

ISL28430FBZ-T7A

ISL28430FBZ-T7A

Intersil (Renesas Electronics America)

IC OPAMP GP 4 CIRCUIT 14SOIC

500

EL5204IY

EL5204IY

Intersil (Renesas Electronics America)

IC VOLTAGE FEEDBACK 2CIRC 10MSOP

1700

ICL7611DCBAZ

ICL7611DCBAZ

Intersil (Renesas Electronics America)

IC OPAMP GP 1 CIRCUIT 8SOIC

3080

EL5223CRZ-T13

EL5223CRZ-T13

Intersil (Renesas Electronics America)

IC BUFFER 8 CIRCUIT 20TSSOP

2391

ISL28417FVBZ-T7

ISL28417FVBZ-T7

Intersil (Renesas Electronics America)

IC OPAMP GP 4 CIRCUIT 14TSSOP

0

ISL28325FUZ

ISL28325FUZ

Intersil (Renesas Electronics America)

IC OPAMP GP 2 CIRCUIT 8MSOP

0

ISL28417FBZ-T7

ISL28417FBZ-T7

Intersil (Renesas Electronics America)

IC OPAMP GP 4 CIRCUIT 14SOIC

0

HA2-5160-5

HA2-5160-5

Intersil (Renesas Electronics America)

IC GP OPAMP 1 CIRCUIT METAL CAN

625

HA9P5320-5ZX96

HA9P5320-5ZX96

Intersil (Renesas Electronics America)

IC OPAMP SAMPL/HOLD 1CIRC 16SOIC

0

ISL28168FHZ-T7

ISL28168FHZ-T7

Intersil (Renesas Electronics America)

IC GP OPAMP 1 CIRCUIT SOT23-6

15000

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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