Linear - Amplifiers - Instrumentation, OP Amps, Buffer Amps

Image Part Number Description / PDF Quantity Rfq
LMC6482AIN

LMC6482AIN

Texas Instruments

IC GP OPAMP 2 CIRCUIT 8DIP

0

TLV2170IDGKT

TLV2170IDGKT

Texas Instruments

IC OPAMP GP 2 CIRCUIT 8VSSOP

556

5962-9460205QPA

5962-9460205QPA

Texas Instruments

TLE2072AM JFET-INPUT HIGH SPEED

769

TLV2785CD

TLV2785CD

Texas Instruments

OPERATIONAL AMPLIFIER

520

TLV2402IDGKRG4

TLV2402IDGKRG4

Texas Instruments

IC OPAMP GP 2 CIRCUIT 8VSSOP

0

TLV341AIDCKT

TLV341AIDCKT

Texas Instruments

IC OPAMP GP 1 CIRCUIT SC70-6

505

TLV2451IDBVT

TLV2451IDBVT

Texas Instruments

IC OPAMP GP 1 CIRCUIT SOT23-5

89

OPA377AIDBVT

OPA377AIDBVT

Texas Instruments

IC OPAMP GP 1 CIRCUIT SOT23-5

2184

OPA197IDBVR

OPA197IDBVR

Texas Instruments

IC OPAMP GP 1 CIRCUIT SOT23-5

3000

LM7372IMA/NOPB

LM7372IMA/NOPB

Texas Instruments

IC OPAMP VFB 2 CIRCUIT 16SOIC

889

LOG101AIDG4

LOG101AIDG4

Texas Instruments

IC OPAMP LOGARITHMIC 1CIRC 8SOIC

0

LM224DR

LM224DR

Texas Instruments

LM224 QUAD STANDARD, INDUSTRIAL-

23150

OPA890IDG4

OPA890IDG4

Texas Instruments

IC OPAMP VFB 1 CIRCUIT 8SOIC

0

MC3403NS

MC3403NS

Texas Instruments

OPERATIONAL AMPLIFIER

2500

LM2904AVQDRG4

LM2904AVQDRG4

Texas Instruments

IC OPAMP GP 2 CIRCUIT 8SOIC

4139

LMV793MF/NOPB

LMV793MF/NOPB

Texas Instruments

IC OPAMP GP 1 CIRCUIT SOT23-5

6188

THS4281DGK

THS4281DGK

Texas Instruments

IC OPAMP VFB 1 CIRCUIT 8VSSOP

720

LM358APWR

LM358APWR

Texas Instruments

IC OPAMP GP 2 CIRCUIT 8TSSOP

19375

OPA551FAKTWT

OPA551FAKTWT

Texas Instruments

IC OPAMP GP 1 CIRCUIT DDPAK

4147

OPA187IDBVR

OPA187IDBVR

Texas Instruments

IC OPAMP ZER-DRIFT 1CIRC SOT23-5

1012

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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