Linear - Amplifiers - Instrumentation, OP Amps, Buffer Amps

Image Part Number Description / PDF Quantity Rfq
ICL7652CPD

ICL7652CPD

Analog Devices, Inc.

IC ZERO-DRIFT 1 CIRCUIT 14DIP

1001

LT6203IMS8#PBF

LT6203IMS8#PBF

Analog Devices, Inc.

IC OPAMP GP 2 CIRCUIT 8MSOP

2476

LTC6115HMS#WTRPBF

LTC6115HMS#WTRPBF

Analog Devices, Inc.

IC CURR SENSE 2 CIRCUIT 12MSOP

0

AD842KH

AD842KH

Analog Devices, Inc.

IC GP OPAMP 1 CIRCUIT TO8-12

1346

MAX4134ESD

MAX4134ESD

Analog Devices, Inc.

IC GP OPAMP 4 CIRCUIT 14SOIC

0

AD8014ARZ-REEL

AD8014ARZ-REEL

Analog Devices, Inc.

IC OPAMP CFA 1 CIRCUIT 8SOIC

387

LT1673CS8#TRPBF

LT1673CS8#TRPBF

Analog Devices, Inc.

IC OPAMP GP 2 CIRCUIT 8SO

0

AD8541ART-R2

AD8541ART-R2

Analog Devices, Inc.

IC GP OPAMP 1 CIRCUIT SOT23-5

0

AD8034ARZ-REEL7

AD8034ARZ-REEL7

Analog Devices, Inc.

IC OPAMP VFB 2 CIRCUIT 8SOIC

361

MAX4400AUK

MAX4400AUK

Analog Devices, Inc.

RAIL-RAIL OPERATIONAL AMPLIFIER

2340

AD8271BRMZ-R7

AD8271BRMZ-R7

Analog Devices, Inc.

IC OPAMP PGA 1 CIRCUIT 10MSOP

0

AD8631ARTZ-REEL7

AD8631ARTZ-REEL7

Analog Devices, Inc.

IC GP OPAMP 1 CIRCUIT SOT23-5

0

5962-9098001MPA

5962-9098001MPA

Analog Devices, Inc.

SINGLE GENERAL PURPOSE OPERATION

1018

LT1210XFE#PBF

LT1210XFE#PBF

Analog Devices, Inc.

IC OPAMP CFA 1 CIRCUIT 16TSSOP

23

AD825ARZ

AD825ARZ

Analog Devices, Inc.

IC OPAMP JFET 1 CIRCUIT 8SOIC

0

LT1636HS8#TRPBF

LT1636HS8#TRPBF

Analog Devices, Inc.

IC OPAMP GP 1 CIRCUIT 8SO

0

AD629BRZ

AD629BRZ

Analog Devices, Inc.

IC OPAMP DIFF 1 CIRCUIT 8SOIC

1123

AD817ARZ-REEL7

AD817ARZ-REEL7

Analog Devices, Inc.

IC OPAMP GP 1 CIRCUIT 8SOIC AD817ARZ-REEL7

3500

AD5751ACPZ-REEL7

AD5751ACPZ-REEL7

Analog Devices, Inc.

IC INST AMP 1 CIRCUIT 32LFCSP

4

LT1491AIDHC#TRPBF

LT1491AIDHC#TRPBF

Analog Devices, Inc.

IC OPAMP GP 4 CIRCUIT 16DFN

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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