Linear - Amplifiers - Instrumentation, OP Amps, Buffer Amps

Image Part Number Description / PDF Quantity Rfq
EL8172FSZ-T7A

EL8172FSZ-T7A

Intersil (Renesas Electronics America)

IC INST AMP 1 CIRCUIT 8SOIC

0

EL5444CN

EL5444CN

Intersil (Renesas Electronics America)

IC VOLTAGE FEEDBACK 4 CIRC 14DIP

0

EL5100ISZ

EL5100ISZ

Intersil (Renesas Electronics America)

IC VOLTAGE FEEDBACK 1 CIRC 8SOIC

75992

ISL55291IUZ

ISL55291IUZ

Intersil (Renesas Electronics America)

IC VOLTAGE FEEDBACK 2CIRC 10MSOP

23725

EL5364ISZ

EL5364ISZ

Intersil (Renesas Electronics America)

IC OPAMP CFA 3 CIRCUIT 16SOIC

3055

ISL28227FBZ-T13

ISL28227FBZ-T13

Intersil (Renesas Electronics America)

IC OPAMP GP 2 CIRCUIT 8SOIC

0

ISL28635FVZ-T13

ISL28635FVZ-T13

Intersil (Renesas Electronics America)

IC OPAMP ZER-DRIFT 1CIRC 14TSSOP

0

EL2286CS-T7

EL2286CS-T7

Intersil (Renesas Electronics America)

VIDEO AMPLIFIER

11000

ICL7621DCBAZ-T

ICL7621DCBAZ-T

Intersil (Renesas Electronics America)

IC OPAMP GP 2 CIRCUIT 8SOIC

0

ISL28207FBZ-T13

ISL28207FBZ-T13

Intersil (Renesas Electronics America)

IC OPAMP GP 2 CIRCUIT 8SOIC

0

ICL7621DCPAZ

ICL7621DCPAZ

Intersil (Renesas Electronics America)

IC OPAMP GP 2 CIRCUIT 8DIP

13

EL5251IY

EL5251IY

Intersil (Renesas Electronics America)

IC VOLTAGE FEEDBACK 2 CIRC 8MSOP

2014

ISL28414FBZ

ISL28414FBZ

Intersil (Renesas Electronics America)

IC OPAMP GP 4 CIRCUIT 14SOIC

0

HA1-5330-5

HA1-5330-5

Intersil (Renesas Electronics America)

SAMPLE AND HOLD

177

EL5174ISZ-T7

EL5174ISZ-T7

Intersil (Renesas Electronics America)

IC OPAMP DIFF 1 CIRCUIT 8SOIC

0

ISL28127FRTZ-T13

ISL28127FRTZ-T13

Intersil (Renesas Electronics America)

IC OPAMP GP 1 CIRCUIT 8TDFN

0

EL8102IS

EL8102IS

Intersil (Renesas Electronics America)

IC GP OPAMP 1 CIRCUIT 8SOIC

29765

HA3-2444-5

HA3-2444-5

Intersil (Renesas Electronics America)

VIDEO OPERATIONAL AMPLIFIER

2460

HA3-5142-5

HA3-5142-5

Intersil (Renesas Electronics America)

OPERATIONAL AMPLIFIER

15822

EL8302IUZ-T7

EL8302IUZ-T7

Intersil (Renesas Electronics America)

IC OPAMP VFB 3 CIRCUIT 16QSOP

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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