Linear - Amplifiers - Instrumentation, OP Amps, Buffer Amps

Image Part Number Description / PDF Quantity Rfq
OPA544T

OPA544T

Texas Instruments

IC OPAMP POWER 1 CIRCUIT TO220-5

10549996

OPA653IDRBT

OPA653IDRBT

Texas Instruments

OPA653 500MHZ, FIXED GAIN OF +2V

0

OPA3682U

OPA3682U

Texas Instruments

IC BUFFER 3 CIRCUIT 16SOIC

17506

LM2904AVQPWRG4Q1

LM2904AVQPWRG4Q1

Texas Instruments

IC OPAMP GP 2 CIRCUIT 8TSSOP

506

LMP7718MA/NOPB

LMP7718MA/NOPB

Texas Instruments

IC OPAMP GP 2 CIRCUIT 8SOIC

0

INA253A2QPWRQ1

INA253A2QPWRQ1

Texas Instruments

IC CURR SENSE 1 CIRCUIT 20TSSOP

0

TLV2454CPWR

TLV2454CPWR

Texas Instruments

IC OPAMP GP 4 CIRCUIT 14TSSOP

0

TLE2027CD

TLE2027CD

Texas Instruments

IC OPAMP GP 1 CIRCUIT 8SOIC

597

INA111AP

INA111AP

Texas Instruments

IC INST AMP 1 CIRCUIT 8DIP

4379850

OPA698IDG4

OPA698IDG4

Texas Instruments

IC OPAMP VFB 1 CIRCUIT 8SOIC

0

TLC1079CD

TLC1079CD

Texas Instruments

TLC1079 QUAD MICROPOWER PRECISIO

8607

OPA4187IRUMR

OPA4187IRUMR

Texas Instruments

ZERO-DRIFT (10UV, 0.001UV/C), MU

2842

LMV358Q3MM/NOPB

LMV358Q3MM/NOPB

Texas Instruments

IC OPAMP GP 2 CIRCUIT 8VSSOP

450

TL072IPE4

TL072IPE4

Texas Instruments

TL072 DUAL LOW-NOISE JFET-INPUT

0

TLV2631IP

TLV2631IP

Texas Instruments

OPERATIONAL AMPLIFIER

0

TLC27L2BID

TLC27L2BID

Texas Instruments

IC OPAMP GP 2 CIRCUIT 8SOIC

0

TLV27L1ID

TLV27L1ID

Texas Instruments

IC OPAMP GP 1 CIRCUIT 8SOIC

525

TLV2462IDGK

TLV2462IDGK

Texas Instruments

IC OPAMP GP 2 CIRCUIT 8VSSOP

304

LMH6629MFE/NOPB

LMH6629MFE/NOPB

Texas Instruments

IC OPAMP VFB 1 CIRCUIT SOT23-5

847

TLV2471AID

TLV2471AID

Texas Instruments

TLV2471A SINGLE 2.8MHZ, IMPROVED

37050

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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