Linear - Amplifiers - Instrumentation, OP Amps, Buffer Amps

Image Part Number Description / PDF Quantity Rfq
LT6204CS#TRPBF

LT6204CS#TRPBF

Analog Devices, Inc.

IC OPAMP GP 4 CIRCUIT 14SO

0

TLC277CP

TLC277CP

Texas Instruments

IC OPAMP GP 2 CIRCUIT 8DIP

41

TLV2372IDGKG4

TLV2372IDGKG4

Texas Instruments

IC OPAMP GP 2 CIRCUIT 8VSSOP

0

AD8048AN

AD8048AN

Analog Devices, Inc.

IC VOLTAGE FEEDBACK 1 CIRC 8DIP

61338

AD8205YRZ-RL

AD8205YRZ-RL

Analog Devices, Inc.

IC OPAMP DIFF 1 CIRCUIT 8SOIC

402

EL5106IW-T7A

EL5106IW-T7A

IC GP OPAMP 1 CIRCUIT SOT23-6

5000

OPA651N-250

OPA651N-250

Texas Instruments

IC VOLT FEEDBACK 1CIRC SOT23-5

0

TLC272CDG4

TLC272CDG4

Texas Instruments

IC OPAMP GP 2 CIRCUIT 8SOIC

1233

OPA27GU/2K5G4

OPA27GU/2K5G4

Texas Instruments

IC OPAMP GP 1 CIRCUIT 8SOIC

0

TLE2024IN

TLE2024IN

Texas Instruments

TLE2024 QUAD PRECISION LOW-POWER

42237

AD8661ARZ-REEL

AD8661ARZ-REEL

Analog Devices, Inc.

IC OPAMP GP 1 CIRCUIT 8SOIC

0

AD8223ARM

AD8223ARM

Analog Devices, Inc.

IC INST AMP 1 CIRCUIT 8MSOP

0

INA210BIDCKR

INA210BIDCKR

Texas Instruments

IC CURR SENSE 1 CIRCUIT SC70-6

400

HA2-5102-5

HA2-5102-5

Rochester Electronics

OPERATIONAL AMPLIFIER

7952

LMH6672MAX/NOPB

LMH6672MAX/NOPB

Texas Instruments

IC OPAMP VFB 2 CIRCUIT 8SOIC

0

LT1492CN8#PBF

LT1492CN8#PBF

Analog Devices, Inc.

IC OPAMP GP 2 CIRCUIT 8DIP

164

OP285GS-REEL7

OP285GS-REEL7

Analog Devices, Inc.

DUAL BUTLER AMPLIFIER IC

1094

MAX409ACPA+

MAX409ACPA+

Maxim Integrated

IC OPAMP GP 1 CIRCUIT 8DIP

2150

ADA4004-4ARZ

ADA4004-4ARZ

Analog Devices, Inc.

IC OPAMP GP 4 CIRCUIT 14SOIC

147

TLV2620IDBVT

TLV2620IDBVT

Texas Instruments

TLV2620 800 UA/CH, 11MHZ, RRO, L

14760

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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