Linear - Amplifiers - Instrumentation, OP Amps, Buffer Amps

Image Part Number Description / PDF Quantity Rfq
THS4631DG4

THS4631DG4

Texas Instruments

IC OPAMP GP 1 CIRCUIT 8SOIC

0

TLV2252AQDREP

TLV2252AQDREP

Texas Instruments

IC OPAMP GP 2 CIRCUIT 8SOIC

0

TLE2161ACD

TLE2161ACD

Texas Instruments

TLE2161A EXCALIBUR JFET-INPUT HI

9516

TLE2024MFKB

TLE2024MFKB

Texas Instruments

TLE2024M HIGH-SPEED, LOW-POWER,

202

LMV981MF/NOPB

LMV981MF/NOPB

Texas Instruments

IC OPAMP GP 1 CIRCUIT SOT23-6

3652

TLV2262AQD

TLV2262AQD

Texas Instruments

IC GP OPAMP 2 CIRCUIT 8SOIC

6167

LMV852MM/NOPB

LMV852MM/NOPB

Texas Instruments

IC OPAMP GP 2 CIRCUIT 8VSSOP

1373

LMH6672MA/NOPB

LMH6672MA/NOPB

Texas Instruments

IC OPAMP VFB 2 CIRCUIT 8SOIC

1289975

LMV321Q1M5/NOPB

LMV321Q1M5/NOPB

Texas Instruments

IC OPAMP GP 1 CIRCUIT SOT23-5

396

LMC6492BEM/NOPB

LMC6492BEM/NOPB

Texas Instruments

IC OPAMP GP 2 CIRCUIT 8SOIC

643

OPA2134UA/2K5G4

OPA2134UA/2K5G4

Texas Instruments

IC AUDIO 2 CIRCUIT 8SOIC

0

OPA4345EA/2K5

OPA4345EA/2K5

Texas Instruments

OPERATIONAL AMPLIFIER

2500

TLC083CDR

TLC083CDR

Texas Instruments

TLC083 DUAL WIDE BANDWIDTH HIGH

57500

THS7530PWPR

THS7530PWPR

Texas Instruments

THS7530 FULLY DIFFERENTIAL, CONT

57215

LMC6044AIMX/NOPB

LMC6044AIMX/NOPB

Texas Instruments

LMC6044 CMOS QUAD MICROPOWER OPE

250

THS4215DRB

THS4215DRB

Texas Instruments

VIDEO AMPLIFIER

1089

INA1620RTWR

INA1620RTWR

Texas Instruments

IC AUDIO 2 CIRCUIT 24WQFN

0

LM2904AVQPWR

LM2904AVQPWR

Texas Instruments

IC OPAMP GP 2 CIRCUIT 8TSSOP

2200

LMV821IDCKR

LMV821IDCKR

Texas Instruments

IC GP OPAMP 1 CIRCUIT SC70-5

159000

OPA134UAG4

OPA134UAG4

Texas Instruments

IC AUDIO 1 CIRCUIT 8SOIC

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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