Linear - Amplifiers - Instrumentation, OP Amps, Buffer Amps

Image Part Number Description / PDF Quantity Rfq
LT1495HS8#PBF

LT1495HS8#PBF

Analog Devices, Inc.

IC OPAMP GP 2 CIRCUIT 8SO

0

LT1722IS5#TRPBF

LT1722IS5#TRPBF

Analog Devices, Inc.

IC OPAMP VFB 1 CIRCUIT TSOT23-5

0

AD8510AR

AD8510AR

Analog Devices, Inc.

IC OPAMP JFET 1 CIRCUIT 8SOIC

1158

OP1177AR

OP1177AR

Analog Devices, Inc.

IC GP OPAMP 1 CIRCUIT 8SOIC

1299

MAX409ACPA

MAX409ACPA

Analog Devices, Inc.

IC GP OPAMP 1 CIRCUIT 8DIP

2718

LT1639CS#PBF

LT1639CS#PBF

Analog Devices, Inc.

IC OPAMP GP 4 CIRCUIT 14SO

0

AD8667ARMZ

AD8667ARMZ

Analog Devices, Inc.

IC OPAMP GP 2 CIRCUIT 8MSOP

1

AD8091ARZ-REEL

AD8091ARZ-REEL

Analog Devices, Inc.

IC VOLTAGE FEEDBACK 1 CIRC 8SOIC

25127

AD741LH/+

AD741LH/+

Analog Devices, Inc.

OP AMP,1000UV OFFSET-MAX

1617

LT1991CMS#TRPBF

LT1991CMS#TRPBF

Analog Devices, Inc.

IC OPAMP PGA 1 CIRCUIT 10MSOP

1274

ADA4310-1ARHZ-RL

ADA4310-1ARHZ-RL

Analog Devices, Inc.

OPERATIONAL AMPLIFIER, 2 FUNC, C

156000

AD8200YR-REEL7

AD8200YR-REEL7

Analog Devices, Inc.

IC DIFF 1 CIRCUIT 8SOIC

4000

LT1805IS#TRPBF

LT1805IS#TRPBF

Analog Devices, Inc.

IC OPAMP GP 4 CIRCUIT 14SO

0

AD8129ARM-REEL7

AD8129ARM-REEL7

Analog Devices, Inc.

IC DIFF 1 CIRCUIT 8MSOP

1890

LTC6101VHVCCS5#TRMPBF

LTC6101VHVCCS5#TRMPBF

Analog Devices, Inc.

IC CURR SENSE 1 CIRCUIT TSOT23-5

425

ADA4084-2ACPZ-R7

ADA4084-2ACPZ-R7

Analog Devices, Inc.

IC OPAMP GP 2 CIRCUIT 8LFCSP

0

LT6105IDCB#TRMPBF

LT6105IDCB#TRMPBF

Analog Devices, Inc.

IC CURR SENSE 1 CIRCUIT 6DFN

0

AD542SH

AD542SH

Analog Devices, Inc.

HIGH PERFORMANCE, BIFET OP AMP

373

LT6231CS8#TRPBF

LT6231CS8#TRPBF

Analog Devices, Inc.

IC OPAMP GP 2 CIRCUIT 8SO

2126

AD8062ARZ

AD8062ARZ

Analog Devices, Inc.

IC OPAMP VFB 2 CIRCUIT 8SOIC

7

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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