Linear - Amplifiers - Instrumentation, OP Amps, Buffer Amps

Image Part Number Description / PDF Quantity Rfq
LT6011IS8#TRPBF

LT6011IS8#TRPBF

Analog Devices, Inc.

IC OPAMP GP 2 CIRCUIT 8SO

0

MAX407CPA

MAX407CPA

Analog Devices, Inc.

IC GP OPAMP 2 CIRCUIT 8DIP

0

AD8055ANZ

AD8055ANZ

Analog Devices, Inc.

IC OPAMP VFB 1 CIRCUIT 8DIP

421

AD8532AR-REEL

AD8532AR-REEL

Analog Devices, Inc.

IC GP OPAMP 2 CIRCUIT 8SOIC

29750

LTC6081IDD#PBF

LTC6081IDD#PBF

Analog Devices, Inc.

IC OPAMP GP 2 CIRCUIT 10DFN

170

AD8531AKSZ-R2

AD8531AKSZ-R2

Analog Devices, Inc.

IC GP OPAMP 1 CIRCUIT SC70-5

27060

AD8628AUJZ-REEL7

AD8628AUJZ-REEL7

Analog Devices, Inc.

IC OPAMP ZERO-DRIFT 1 CIRC TSOT5

10396

LT1782HS6#TRMPBF

LT1782HS6#TRMPBF

Analog Devices, Inc.

IC OPAMP GP 1 CIRCUIT TSOT23-6

0

MAX421CPD

MAX421CPD

Analog Devices, Inc.

IC CHOPPER 1 CIRCUIT 14DIP

178

LT1497CS8#PBF

LT1497CS8#PBF

Analog Devices, Inc.

IC OPAMP CFA 2 CIRCUIT 8SO

284

AD8099ARD

AD8099ARD

Analog Devices, Inc.

IC GP OPAMP 1 CIRCUIT 8SOIC

70394

LT1636CS8#TRPBF

LT1636CS8#TRPBF

Analog Devices, Inc.

IC OPAMP GP 1 CIRCUIT 8SO

175

AD8625ARZ-REEL7

AD8625ARZ-REEL7

Analog Devices, Inc.

IC OPAMP JFET 4 CIRCUIT 14SOIC

980

MAX4492AUD

MAX4492AUD

Analog Devices, Inc.

IC GP OPAMP 4 CIRCUIT 14TSSOP

0

AD8132ARMZ-REEL7

AD8132ARMZ-REEL7

Analog Devices, Inc.

IC OPAMP DIFF 1 CIRCUIT 8MSOP

552

OP200GSZ-REEL

OP200GSZ-REEL

Analog Devices, Inc.

IC OPAMP GP 2 CIRCUIT 16SOIC

649

MAX4389EXT

MAX4389EXT

Analog Devices, Inc.

OPERATIONAL AMPLIFIER

1298

LT1782IS6#TRPBF

LT1782IS6#TRPBF

Analog Devices, Inc.

IC OPAMP GP 1 CIRCUIT TSOT23-6

0

LTC6263HMS#TRPBF

LTC6263HMS#TRPBF

Analog Devices, Inc.

IC OPAMP GP 4 CIRCUIT 16MSOP

0

LT6203CMS8#PBF

LT6203CMS8#PBF

Analog Devices, Inc.

IC OPAMP GP 2 CIRCUIT 8MSOP

2743

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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