Linear - Amplifiers - Instrumentation, OP Amps, Buffer Amps

Image Part Number Description / PDF Quantity Rfq
OPA333AIDCKR

OPA333AIDCKR

Texas Instruments

OPA333 1.8V, 17A, MICROPOWER, PR

0

INA281B5QDBVRQ1

INA281B5QDBVRQ1

Texas Instruments

AEC-Q100, -4-V TO 110-V, 1.3-MHZ

3000

THS4281DR

THS4281DR

Texas Instruments

THS4281 VERY LOW-POWER HIGH SPEE

369235

OPA627APG4

OPA627APG4

Texas Instruments

IC OPAMP GP 1 CIRCUIT 8DIP

0

LM358LVIDGKR

LM358LVIDGKR

Texas Instruments

IC OPAMP GP 2 CIRCUIT 8VSSOP

17528

TLC25M4BCN

TLC25M4BCN

Texas Instruments

IC GP OPAMP 4 CIRCUIT 14DIP

17007

TLV2314IDR

TLV2314IDR

Texas Instruments

IC CMOS 2 CIRCUIT 8SOIC

3654

INA210CIDCKT

INA210CIDCKT

Texas Instruments

IC CURR SENSE 1 CIRCUIT SC70-6

0

LMV832MM/NOPB

LMV832MM/NOPB

Texas Instruments

IC OPAMP GP 2 CIRCUIT 8VSSOP

1584

LP2902PWRE4

LP2902PWRE4

Texas Instruments

IC OPAMP GP 4 CIRCUIT 14TSSOP

0

TLV2475IN

TLV2475IN

Texas Instruments

IC GP OPAMP 4 CIRCUIT 16DIP

11500

INA105KU/2K5G4

INA105KU/2K5G4

Texas Instruments

IC OPAMP DIFF 1 CIRCUIT 8SOIC

0

LMP7731MAX/NOPB

LMP7731MAX/NOPB

Texas Instruments

IC OPAMP GP 1 CIRCUIT 8SOIC

0

TLV2464IPWRG4

TLV2464IPWRG4

Texas Instruments

IC OPAMP GP 4 CIRCUIT 14TSSOP

0

TLV2471CDBVRG4

TLV2471CDBVRG4

Texas Instruments

IC OPAMP GP 1 CIRCUIT SOT23-5

0

LMC7101AIM5

LMC7101AIM5

Texas Instruments

IC OPAMP GP 1 CIRCUIT SOT23-5

0

THS4041IDGN

THS4041IDGN

Texas Instruments

IC VOLT FEEDBACK 1CIRC 8MSOP-PWR

7600

INA115BU

INA115BU

Texas Instruments

IC INST AMP 1 CIRCUIT 16SOIC

3925

ISO124U/1K

ISO124U/1K

Texas Instruments

IC OPAMP ISOLATION 1 CIRC 8SOIC

1259

TLV2450IP

TLV2450IP

Texas Instruments

IC GP OPAMP 1 CIRCUIT 8DIP

61121

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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