Linear - Amplifiers - Instrumentation, OP Amps, Buffer Amps

Image Part Number Description / PDF Quantity Rfq
INA826AID

INA826AID

Texas Instruments

IC INST AMP 1 CIRCUIT 8SOIC

0

OPA355NA/3KG4

OPA355NA/3KG4

Texas Instruments

IC CMOS 1 CIRCUIT SOT23-6

0

LM358D-JF

LM358D-JF

Texas Instruments

DUAL OPERATIONAL AMPLIFIER

17175

OPA604AUG4

OPA604AUG4

Texas Instruments

IC OPAMP GP 1 CIRCUIT 8SOIC

0

OPA727AIDGKT

OPA727AIDGKT

Texas Instruments

IC OPAMP GP 1 CIRCUIT 8VSSOP

871

TLC272BIDRG4

TLC272BIDRG4

Texas Instruments

IC OPAMP GP 2 CIRCUIT 8SOIC

0

OPA567AIRHGT

OPA567AIRHGT

Texas Instruments

IC OPAMP GP 1 CIRCUIT 12VQFN

170

INA181A2QDBVRQ1

INA181A2QDBVRQ1

Texas Instruments

IC CURR SENSE 1 CIRCUIT SOT23-6

2917

OPA4172IPW

OPA4172IPW

Texas Instruments

IC OPAMP GP 4 CIRCUIT 14SSOP

1339990

LMP8640MK-H/NOPB

LMP8640MK-H/NOPB

Texas Instruments

IC CURR SENSE 1 CIRCUIT TSOT23-6

1731

TLE2021MDREP

TLE2021MDREP

Texas Instruments

IC OPAMP GP 1 CIRCUIT 8SOIC

2110

OPA810IDT

OPA810IDT

Texas Instruments

IC OPAMP JFET 1 CIRCUIT 8SOIC

343

LM2902KDR

LM2902KDR

Texas Instruments

LM2902K QUADRUPLE GENERAL-PURPOS

17000

THS4062IDG4

THS4062IDG4

Texas Instruments

THS4062 180-MHZ HIGH OUTPUT DRIV

100

TLC085CD

TLC085CD

Texas Instruments

IC GP OPAMP 4 CIRCUIT 16SOIC

8657

THS4531IDR

THS4531IDR

Texas Instruments

IC OPAMP DIFF 1 CIRCUIT 8SOIC

1453

TLC2654AC-8D

TLC2654AC-8D

Texas Instruments

TLC2654A ADVANCED LINCMOS LOW-NO

6221

OPA2237UA/2K5

OPA2237UA/2K5

Texas Instruments

IC OPAMP GP 2 CIRCUIT 8SOIC

3841

OPA4171AQDRQ1

OPA4171AQDRQ1

Texas Instruments

IC OPAMP GP 4 CIRCUIT 14SOIC

4411

LMP7716QMMX/NOPB

LMP7716QMMX/NOPB

Texas Instruments

IC OPAMP GP 2 CIRCUIT 8VSSOP

0

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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