Linear - Amplifiers - Instrumentation, OP Amps, Buffer Amps

Image Part Number Description / PDF Quantity Rfq
PM741J

PM741J

Analog Devices, Inc.

OPERATIONAL AMPLIFIER

0

LT1920CN8#PBF

LT1920CN8#PBF

Analog Devices, Inc.

IC INST AMP 1 CIRCUIT 8DIP

184

AD8228BRMZ-RL

AD8228BRMZ-RL

Analog Devices, Inc.

IC INST AMP 1 CIRCUIT 8MSOP

0

OP297FSZ-REEL7

OP297FSZ-REEL7

Analog Devices, Inc.

IC OPAMP GP 2 CIRCUIT 8SOIC

1046

AD8675ARZ

AD8675ARZ

Analog Devices, Inc.

IC OPAMP GP 1 CIRCUIT 8SOIC

226

AD8602ARMZ

AD8602ARMZ

Analog Devices, Inc.

IC OPAMP GP 2 CIRCUIT 8MSOP

2295

AD8504ARUZ-REEL

AD8504ARUZ-REEL

Analog Devices, Inc.

OPERATIONAL AMPLIFIER, 4 FUNC, 5

8570

MAX414BCSD+

MAX414BCSD+

Analog Devices, Inc.

IC GP OPAMP 4 CIRCUIT 14SOIC

871

AD8002AR

AD8002AR

Analog Devices, Inc.

IC CFA 2 CIRCUIT 8SOIC

2974

MAX414EPD+

MAX414EPD+

Analog Devices, Inc.

IC GP OPAMP 4 CIRCUIT 14DIP

1205

LTC2058HMSE#TRPBF

LTC2058HMSE#TRPBF

Analog Devices, Inc.

IC OPAMP ZERO-DRIFT 2CIRC 12MSOP

0

AD8042AR-REEL

AD8042AR-REEL

Analog Devices, Inc.

IC VOLTAGE FEEDBACK 2 CIRC 8SOIC

13960

ADA4528-2ARMZ-RL

ADA4528-2ARMZ-RL

Analog Devices, Inc.

IC OPAMP ZERO-DRIFT 2 CIRC 8MSOP

0

AD8010ANZ

AD8010ANZ

Analog Devices, Inc.

IC OPAMP CFA 1 CIRCUIT 8DIP

79

ADA4817-2ACPZ-RL

ADA4817-2ACPZ-RL

Analog Devices, Inc.

IC OPAMP VFB 2 CIRCUIT 16LFCSP

0

OP200EZ

OP200EZ

Analog Devices, Inc.

IC OPAMP GP 2 CIRCUIT 8CERDIP

12

LT1635IS8#PBF

LT1635IS8#PBF

Analog Devices, Inc.

IC OPAMP GP 2 CIRCUIT 8SO

392

AD8033ARZ-REEL7

AD8033ARZ-REEL7

Analog Devices, Inc.

IC OPAMP VFB 1 CIRCUIT 8SOIC

9471

LTC6084HMS8#PBF

LTC6084HMS8#PBF

Analog Devices, Inc.

IC OPAMP GP 2 CIRCUIT 8MSOP

2000

OP07CP+

OP07CP+

Analog Devices, Inc.

PRECISION OPERATIONAL AMPLIFIER

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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