Linear - Amplifiers - Instrumentation, OP Amps, Buffer Amps

Image Part Number Description / PDF Quantity Rfq
INA240A1PW

INA240A1PW

Texas Instruments

IC CURR SENSE 1 CIRCUIT 8TSSOP

137

NE5532ADRE4

NE5532ADRE4

Texas Instruments

IC OPAMP GP 2 CIRCUIT 8SOIC

0

INA115AU-1

INA115AU-1

Texas Instruments

IC OPAMP INSTR 1MHZ 16SOIC

1217

TLC27M4CDRG4

TLC27M4CDRG4

Texas Instruments

IC OPAMP GP 4 CIRCUIT 14SOIC

0

LMV821IDCKT

LMV821IDCKT

Texas Instruments

IC GP OPAMP 1 CIRCUIT SC70-5

42000

TLC27M2AIDR

TLC27M2AIDR

Texas Instruments

IC OPAMP GP 2 CIRCUIT 8SOIC

8569

LM741CH/NOPB

LM741CH/NOPB

Texas Instruments

IC OPAMP GP 1 CIRCUIT TO99-8

831

TLC274ACDR

TLC274ACDR

Texas Instruments

IC OPAMP GP 4 CIRCUIT 14SOIC

2370

INA821IDGKT

INA821IDGKT

Texas Instruments

IC INST AMP 1 CIRCUIT 8VSSOP

327

OPA2107AU/2K5G4

OPA2107AU/2K5G4

Texas Instruments

IC OPAMP GP 2 CIRCUIT 8SOIC

0

OPA4377AIPWR

OPA4377AIPWR

Texas Instruments

IC CMOS 4 CIRCUIT 14TSSOP

289

OPA2277U/2K5

OPA2277U/2K5

Texas Instruments

IC OPAMP GP 2 CIRCUIT 8SOIC

0

OPA4343EA/2K5

OPA4343EA/2K5

Texas Instruments

IC OPAMP GP 4 CIRCUIT 16SSOP

0

TLV2711IDBVR

TLV2711IDBVR

Texas Instruments

IC OPAMP GP 1 CIRCUIT SOT23-5

3749

OPA4325IPWR

OPA4325IPWR

Texas Instruments

IC CMOS 4 CIRCUIT 14TSSOP

1273

TLC085ID

TLC085ID

Texas Instruments

OPERATIONAL AMPLIFIER

1000

TLV2432CD

TLV2432CD

Texas Instruments

TLV2432 DUAL ADVANCED LINCMOS RA

4850

TLC2652ACP

TLC2652ACP

Texas Instruments

TLC2652A ADVANCED LINCMOS PRECIS

564

TL972QPWRQ1

TL972QPWRQ1

Texas Instruments

IC OPAMP GP 2 CIRCUIT 8TSSOP

0

THS4051MJGB

THS4051MJGB

Texas Instruments

THS4051M 70-MHZ HIGH-SPEED AMPLI

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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