Linear - Amplifiers - Instrumentation, OP Amps, Buffer Amps

Image Part Number Description / PDF Quantity Rfq
TL972IPG4

TL972IPG4

Texas Instruments

IC OPAMP GP 2 CIRCUIT 8DIP

0

TLE2061ACPG4

TLE2061ACPG4

Texas Instruments

IC OPAMP JFET 1 CIRCUIT 8DIP

0

OPA4330AIRGYT

OPA4330AIRGYT

Texas Instruments

IC OPAMP ZERO-DRIFT 4CIRC 14VQFN

4841

OPA363AIDBVT

OPA363AIDBVT

Texas Instruments

IC OPAMP GP 1 CIRCUIT SOT23-6

571

THS4061IDG4

THS4061IDG4

Texas Instruments

THS4061 180-MHZ HIGH OUTPUT DRIV

0

THS4271DG4

THS4271DG4

Texas Instruments

IC OPAMP VFB 1 CIRCUIT 8SOIC

0

TLC27M2IP

TLC27M2IP

Texas Instruments

TLC27M2 DUAL PRECISION SINGLE SU

24312

TLV2775AIPW

TLV2775AIPW

Texas Instruments

TLV2775A QUAD 2.7-V IMPROVED OFF

8343

TLV2763CD

TLV2763CD

Texas Instruments

IC GP OPAMP 2 CIRCUIT 14SOIC

34644

INA103KU/1K

INA103KU/1K

Texas Instruments

IC INST AMP 1 CIRCUIT 16SOIC

0

UC3178QP

UC3178QP

Texas Instruments

IC POWER AMP 2 CIRCUIT 28PLCC

7801

TLV2470CDR

TLV2470CDR

Texas Instruments

TLV2470 SINGLE LOW-POWER RAIL-TO

42350

OPA2277AIDRMT

OPA2277AIDRMT

Texas Instruments

IC OPAMP GP 2 CIRCUIT 8VSON

2024

TLV2772AQDRQ1

TLV2772AQDRQ1

Texas Instruments

TLV2772A-Q1 DUAL AUTOMOTIVE, IMP

34300

INA2180A4IDGKT

INA2180A4IDGKT

Texas Instruments

IC CURR SENSE 2 CIRCUIT 8VSSOP

1016

TLC2272ACPWR

TLC2272ACPWR

Texas Instruments

IC OPAMP GP 2 CIRCUIT 8TSSOP

59036000

THS4531AID

THS4531AID

Texas Instruments

IC OPAMP DIFF 1 CIRCUIT 8SOIC

1001

INA155U/2K5

INA155U/2K5

Texas Instruments

INA155 SINGLE-SUPPLY, RAIL-TO-RA

6281

OPA334AIDBVT

OPA334AIDBVT

Texas Instruments

IC OPAMP ZER-DRIFT 1CIRC SOT23-6

412

LMV324QDRQ1

LMV324QDRQ1

Texas Instruments

IC GP OPAMP 4 CIRCUIT 14SOIC

19756

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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