Linear - Amplifiers - Instrumentation, OP Amps, Buffer Amps

Image Part Number Description / PDF Quantity Rfq
ISL28534FVZ

ISL28534FVZ

Intersil (Renesas Electronics America)

IC OPAMP ZER-DRIFT 1CIRC 14TSSOP

0

EL5166ISZ-T7

EL5166ISZ-T7

Intersil (Renesas Electronics America)

IC OPAMP CFA 1 CIRCUIT 8SOIC

0

EL5362ISZ-T13

EL5362ISZ-T13

Intersil (Renesas Electronics America)

IC OPAMP CFA 3 CIRCUIT 16SOIC

0

EL8403IUZ

EL8403IUZ

Intersil (Renesas Electronics America)

IC VOLTAGE FEEDBACK 4CIRC 16QSOP

38626

CA5420AMZ96

CA5420AMZ96

Intersil (Renesas Electronics America)

IC OPAMP GP 1 CIRCUIT 8SOIC

0

ISL55001IBZ-T13

ISL55001IBZ-T13

Intersil (Renesas Electronics America)

IC OPAMP VFB 1 CIRCUIT 8SOIC

0

ICL7621AMTV

ICL7621AMTV

Intersil (Renesas Electronics America)

OPERATIONAL AMPLIFIER

377

EL5420CSZ-T7

EL5420CSZ-T7

Intersil (Renesas Electronics America)

IC OPAMP VFB 4 CIRCUIT 14SOIC

0

ISL28213FUZ-T7

ISL28213FUZ-T7

Intersil (Renesas Electronics America)

IC OPAMP GP 2 CIRCUIT 8MSOP

0

ISL28345FBZ-T7

ISL28345FBZ-T7

Intersil (Renesas Electronics America)

IC OPAMP GP 4 CIRCUIT 14SOIC

0

EL8102IW-T7A

EL8102IW-T7A

Intersil (Renesas Electronics America)

IC GP OPAMP 1 CIRCUIT SOT23-6

119

ICL7621ACPA

ICL7621ACPA

Intersil (Renesas Electronics America)

DUAL OPERATIONAL AMPLIFIER

2311

HA7-5137A-5

HA7-5137A-5

Intersil (Renesas Electronics America)

IC GP OPAMP 1 CIRCUIT 8CERDIP

495

EL5308IUZ-T7

EL5308IUZ-T7

Intersil (Renesas Electronics America)

IC OPAMP GP 3 CIRCUIT 16QSOP

207

ISL28476FAZ-T7

ISL28476FAZ-T7

Intersil (Renesas Electronics America)

IC GP OPAMP 4 CIRCUIT 16QSOP

21000

ISL28214FUZ-T7

ISL28214FUZ-T7

Intersil (Renesas Electronics America)

IC OPAMP GP 2 CIRCUIT 8MSOP

0

EL5462ISZ

EL5462ISZ

Intersil (Renesas Electronics America)

IC OPAMP CFA 4 CIRCUIT 14SOIC

0

EL5111TIWTZ-T7A

EL5111TIWTZ-T7A

Intersil (Renesas Electronics America)

IC OPAMP VFB 1 CIRCUIT TSOT23-5

0

JM38510/12205BPA

JM38510/12205BPA

Intersil (Renesas Electronics America)

HIGH SLEW RATE OP AMP

709

ISL28208FUZ-T7A

ISL28208FUZ-T7A

Intersil (Renesas Electronics America)

IC OPAMP GP 2 CIRCUIT 8MSOP

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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