Linear - Amplifiers - Instrumentation, OP Amps, Buffer Amps

Image Part Number Description / PDF Quantity Rfq
INA290A4IDCKR

INA290A4IDCKR

Texas Instruments

INA290A4IDCKR

2947

TL074ACNS

TL074ACNS

Texas Instruments

OPERATIONAL AMPLIFIER

5750

THS4552IPWR

THS4552IPWR

Texas Instruments

IC OPAMP DIFF 2 CIRCUIT 16TSSOP

0

INA2141UA

INA2141UA

Texas Instruments

IC INST AMP 2 CIRCUIT 16SOIC

48

INA126P

INA126P

Texas Instruments

IC INST AMP 1 CIRCUIT 8DIP

703

TLV27L1CD

TLV27L1CD

Texas Instruments

IC OPAMP GP 1 CIRCUIT 8SOIC

660

TLC2272AMFKB

TLC2272AMFKB

Texas Instruments

TLC2272AM-MIL RAIL-TO-RAIL LOW N

100

RCV420KPG4

RCV420KPG4

Texas Instruments

IC OPAMP GP 1 CIRCUIT 16DIP

19

OPA838IDCKR

OPA838IDCKR

Texas Instruments

IC OPAMP VFB 1 CIRCUIT SC70-5

2487

LMC6001AIN/NOPB

LMC6001AIN/NOPB

Texas Instruments

IC OPAMP GP 1 CIRCUIT 8DIP

456

INA2132UA

INA2132UA

Texas Instruments

IC INST AMP 1 CIRCUIT 14SOIC

302

LMH6732MA/NOPB

LMH6732MA/NOPB

Texas Instruments

IC OPAMP CFA 1 CIRCUIT 8SOIC

0

TLC274CDBG4

TLC274CDBG4

Texas Instruments

IC OPAMP GP 4 CIRCUIT 14SSOP

0

THS4031IDGN

THS4031IDGN

Texas Instruments

IC OPAMP VFB 1 CIRCUIT 8MSOP

286

OPA2340EA/250G4

OPA2340EA/250G4

Texas Instruments

IC OPAMP GP 2 CIRCUIT 8VSSOP

10000

OPA445ADDAR

OPA445ADDAR

Texas Instruments

IC OPAMP GP 1 CIRCUIT 8SOPWRPAD

0

OPA2301AIDGKT

OPA2301AIDGKT

Texas Instruments

IC OPAMP VFB 2 CIRCUIT 8VSSOP

1553

OPA4347EA/2K5

OPA4347EA/2K5

Texas Instruments

OPA4347 MICROPOWER RAIL-TO-RAIL

22003

TLC272BCDR

TLC272BCDR

Texas Instruments

IC OPAMP GP 2 CIRCUIT 8SOIC

1965

TLC2272ACPW

TLC2272ACPW

Texas Instruments

IC OPAMP GP 2 CIRCUIT 8TSSOP

450

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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