Linear - Amplifiers - Instrumentation, OP Amps, Buffer Amps

Image Part Number Description / PDF Quantity Rfq
BU7266F-E2

BU7266F-E2

ROHM Semiconductor

IC CMOS 2 CIRCUIT 8SOP

316

BD12730G-GTR

BD12730G-GTR

ROHM Semiconductor

IC OPAMP GP 1 CIRCUIT 5SSOP

2996

LM2904DR

LM2904DR

ROHM Semiconductor

IC OPAMP GP 2 CIRCUIT 8SOIC

645

BU7241G-TR

BU7241G-TR

ROHM Semiconductor

IC OPAMP GP 1 CIRCUIT 5SSOP

3301

BA3472F-E2

BA3472F-E2

ROHM Semiconductor

IC OPAMP GP 2 CIRCUIT 8SOP

0

BU7266SFVM-TR

BU7266SFVM-TR

ROHM Semiconductor

IC CMOS 2 CIRCUIT 8MSOP

5834

BD87581YG-CTR

BD87581YG-CTR

ROHM Semiconductor

EMARMOUR, AUTOMOTIVE EXCELLENT E

15

LM2904FVM-GTR

LM2904FVM-GTR

ROHM Semiconductor

IC OPAMP GP 2 CIRCUIT 8MSOP

375

BU7444F-E2

BU7444F-E2

ROHM Semiconductor

IC CMOS 4 CIRCUIT 14SOP

2468

BA3472YFV-CE2

BA3472YFV-CE2

ROHM Semiconductor

IC OPAMP GP 2 CIRCUIT 8SSOPB

2130

BA4584RFV-E2

BA4584RFV-E2

ROHM Semiconductor

IC OPAMP GP 4 CIRCUIT 14SSOPB

2139

BU7244SF-E2

BU7244SF-E2

ROHM Semiconductor

IC CMOS 4 CIRCUIT 14SOP

2270

LM358DT

LM358DT

ROHM Semiconductor

IC OPAMP GP 2 CIRCUIT 8SO

860

BU7262NUX-TR

BU7262NUX-TR

ROHM Semiconductor

IC OPAMP GP 2 CIRC VSON008X2030

3693

BD77502FVM-TR

BD77502FVM-TR

ROHM Semiconductor

BD77502FVM ARE DUAL GROUND SENSE

3000

BA4510FV-E2

BA4510FV-E2

ROHM Semiconductor

IC OPAMP GP 2 CIRCUIT 8SSOPB

2500

LMR932FJ-GE2

LMR932FJ-GE2

ROHM Semiconductor

IC OPAMP GP 2 CIRCUIT SOP8J

2480

BA4560YFV-MGE2

BA4560YFV-MGE2

ROHM Semiconductor

IC OPAMP GP 2 CIRCUIT 8SSOPB

2500

LMR344FJ-GE2

LMR344FJ-GE2

ROHM Semiconductor

IC CMOS 4 CIRCUIT 14SOPJ

2490

BU7442SNUX-TR

BU7442SNUX-TR

ROHM Semiconductor

IC OPAMP GP 2 CIRC VSON008X2030

7935

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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