Linear - Amplifiers - Instrumentation, OP Amps, Buffer Amps

Image Part Number Description / PDF Quantity Rfq
THS4130IDR

THS4130IDR

Texas Instruments

IC OPAMP DIFF 1 CIRCUIT 8SOIC

0

TSV912AIDGKT

TSV912AIDGKT

Texas Instruments

IC OPAMP GP 2 CIRCUIT 8VSSOP

718

LME49725MA/NOPB

LME49725MA/NOPB

Texas Instruments

OPERATIONAL AMPLIFIER

0

INA122U

INA122U

Texas Instruments

IC INST AMP 1 CIRCUIT 8SOIC

390

OP07EZ

OP07EZ

Texas Instruments

OPERATIONAL AMPLIFIER

368

OPA4316IPW

OPA4316IPW

Texas Instruments

IC OPAMP GP 4 CIRCUIT 14TSSOP

120

IVC102U

IVC102U

Texas Instruments

IC OPAMP TRANSIMP 1 CIRC 14SOIC

4273

TLV2461IDBVTG4

TLV2461IDBVTG4

Texas Instruments

IC OPAMP GP 1 CIRCUIT SOT23-5

0

LM8262MM/NOPB

LM8262MM/NOPB

Texas Instruments

IC OPAMP GP 2 CIRCUIT 8VSSOP

18674

TL062ACDR

TL062ACDR

Texas Instruments

IC OPAMP JFET 2 CIRCUIT 8SOIC

5709

OPA2705EA/250G4

OPA2705EA/250G4

Texas Instruments

IC OPAMP GP 2 CIRCUIT 8VSSOP

0

OPA2251UAG4

OPA2251UAG4

Texas Instruments

IC OPAMP GP 2 CIRCUIT 8SOIC

0

LM124AJ/PB

LM124AJ/PB

Texas Instruments

IC OPAMP GP 4 CIRCUIT 14CDIP

393

OPA860IDR

OPA860IDR

Texas Instruments

OPA860 WIDE BANDWIDTH OPERATIONA

21554

OPA2132U/2K5

OPA2132U/2K5

Texas Instruments

IC OPAMP GP 2 CIRCUIT 8SOIC

24962500

MC3303PWR

MC3303PWR

Texas Instruments

IC OPAMP GP 4 CIRCUIT 14TSSOP

2835

OPA227PAG4

OPA227PAG4

Texas Instruments

IC OPAMP GP 1 CIRCUIT 8DIP

0

LM359M

LM359M

Texas Instruments

IC GP OPAMP 2 CIRCUIT 14SOIC

0

LMP8603MME/NOPB

LMP8603MME/NOPB

Texas Instruments

IC CURR SENSE 1 CIRCUIT 8VSSOP

2397

TLC080ID

TLC080ID

Texas Instruments

TLC080 SINGLE WIDE-BANDWIDTH HIG

51346

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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