Linear - Amplifiers - Instrumentation, OP Amps, Buffer Amps

Image Part Number Description / PDF Quantity Rfq
INA111AU

INA111AU

Texas Instruments

IC INST AMP 1 CIRCUIT 16SOIC

799

LM224KAD

LM224KAD

Texas Instruments

IC OPAMP GP 4 CIRCUIT 14SOIC

1598

OPA1632DR

OPA1632DR

Texas Instruments

IC AUDIO 1 CIRCUIT 8SOIC

1518510000

TL33072AD

TL33072AD

Texas Instruments

OPERATIONAL AMPLIFIER

1035

TLC2654IP

TLC2654IP

Texas Instruments

TLC2654 LOW-NOISE CHOPPER-STABIL

13307

THS4052ID

THS4052ID

Texas Instruments

THS4052 70-MHZ LOW-COST VOLTAGE-

5967

LM6144BIMX/NOPB

LM6144BIMX/NOPB

Texas Instruments

IC OPAMP GP 4 CIRCUIT 14SOIC

5467

TLV4112CDGN

TLV4112CDGN

Texas Instruments

IC OPAMP GP 2 CIRCUIT 8MSOP

43

INA2332AIPWTG4

INA2332AIPWTG4

Texas Instruments

IC INST AMP 2 CIRCUIT 14TSSOP

0

TLC27L4CD

TLC27L4CD

Texas Instruments

IC OPAMP GP 4 CIRCUIT 14SOIC

193

TL052IDR

TL052IDR

Texas Instruments

IC OPAMP JFET 2 CIRCUIT 8SOIC

2692

THS4051MJG

THS4051MJG

Texas Instruments

THS4051M 70-MHZ HIGH-SPEED AMPLI

159

TLC27M2BIDG4

TLC27M2BIDG4

Texas Instruments

IC OPAMP GP 2 CIRCUIT 8SOIC

0

INA280A1IDCKR

INA280A1IDCKR

Texas Instruments

2.7-V TO 100-V, 800-KHZ, CURRENT

2740

THS4021CDGNG4

THS4021CDGNG4

Texas Instruments

IC OPAMP VFB 1 CIRCUIT 8MSOP

0

THS4215DGNR

THS4215DGNR

Texas Instruments

IC VOLT FEEDBACK 1CIRC 8MSOP-PWR

2326

TLC2274CD

TLC2274CD

Texas Instruments

IC OPAMP GP 4 CIRCUIT 14SOIC

1023

OPA277UA/2K5

OPA277UA/2K5

Texas Instruments

IC OPAMP GP 1 CIRCUIT 8SOIC

9776

TLC27L2MD

TLC27L2MD

Texas Instruments

TLC27L2M - LINCMOS PRECISION DU

28529

TLV2172QDGKRQ1

TLV2172QDGKRQ1

Texas Instruments

IC OPAMP GP 2 CIRCUIT 8VSSOP

7148

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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