Linear - Amplifiers - Instrumentation, OP Amps, Buffer Amps

Image Part Number Description / PDF Quantity Rfq
TLR344FJ-GE2

TLR344FJ-GE2

ROHM Semiconductor

IC CMOS 4 CIRCUIT 14SOPJ

2500

BA3474WFV-CE2

BA3474WFV-CE2

ROHM Semiconductor

IC OPAMP GP 4 CIRCUIT 14SSOPB

2285

BU7294SFV-E2

BU7294SFV-E2

ROHM Semiconductor

IC CMOS 4 CIRCUIT 14SSOPB

2414

BU7275HFV-TR

BU7275HFV-TR

ROHM Semiconductor

IC OPAMP GP 1 CIRCUIT HVSOF5

3000

BA14741FJ-GE2

BA14741FJ-GE2

ROHM Semiconductor

IC OPAMP GP 4 CIRCUIT 14SOPJ

2446

BD87582YFVM-CTR

BD87582YFVM-CTR

ROHM Semiconductor

EMARMOUR, AUTOMOTIVE EXCELLENT E

0

BD77501G-TR

BD77501G-TR

ROHM Semiconductor

EMARMOUR NANO CAP HIGH SPEED GRO

2895

BA4558FV-E2

BA4558FV-E2

ROHM Semiconductor

IC OPAMP GP 2 CIRCUIT 8SSOPB

0

BA2902KN-E2

BA2902KN-E2

ROHM Semiconductor

IC OPAMP GP 4 CIRCUIT 16VQFN

0

BA4560F-E1

BA4560F-E1

ROHM Semiconductor

IC OPAMP GP 2 CIRCUIT 8SOP

0

BA10358N

BA10358N

ROHM Semiconductor

IC OPAMP GP 2 CIRCUIT 8SIP

0

LM324F-E2

LM324F-E2

ROHM Semiconductor

IC OPAMP GP 4 CIRCUIT 14SOP

0

BA15218

BA15218

ROHM Semiconductor

IC OPAMP GP 2 CIRCUIT 8DIP

0

BA15218N

BA15218N

ROHM Semiconductor

IC OPAMP GP 2 CIRCUIT 8SIP

0

BA4560N

BA4560N

ROHM Semiconductor

IC OPAMP GP 2 CIRCUIT 8SIP

0

BA15218F

BA15218F

ROHM Semiconductor

IC OPAMP GP 2 CIRCUIT 8SOP

0

LM358F-E2

LM358F-E2

ROHM Semiconductor

IC OPAMP GP 2 CIRCUIT 8SOP

0

BA10358F-E1

BA10358F-E1

ROHM Semiconductor

IC OPAMP GP 2 CIRCUIT 8SOP

0

BA4558N

BA4558N

ROHM Semiconductor

IC OPAMP GP 2 CIRCUIT 8SIP

0

LM324WDT

LM324WDT

ROHM Semiconductor

IC OPAMP GP 4 CIRCUIT 14SO

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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