Linear - Amplifiers - Instrumentation, OP Amps, Buffer Amps

Image Part Number Description / PDF Quantity Rfq
MAX4198EUA/GH9

MAX4198EUA/GH9

Analog Devices, Inc.

R-R PRECISION DIFFERENTIAL AMP

2006

ADA4692-2ARZ-RL

ADA4692-2ARZ-RL

Analog Devices, Inc.

IC OPAMP VFB 2 CIRCUIT 8SOIC

0

LT6201CS8#PBF

LT6201CS8#PBF

Analog Devices, Inc.

IC OPAMP GP 2 CIRCUIT 8SO

235

OP07DN8#PBF

OP07DN8#PBF

Analog Devices, Inc.

IC OPAMP GP 1 CIRCUIT 8DIP

0

AD741LN/+

AD741LN/+

Analog Devices, Inc.

OP AMP,1000UV OFFSET-MAX

1948

OP292GS-REEL

OP292GS-REEL

Analog Devices, Inc.

IC GP OPAMP 2 CIRCUIT 8SOIC

12500

LT6211IMS#TRPBF

LT6211IMS#TRPBF

Analog Devices, Inc.

IC OPAMP CFA 2 CIRCUIT 10MSOP

0

LTC2051HVIS8#TRPBF

LTC2051HVIS8#TRPBF

Analog Devices, Inc.

IC OPAMP ZERO-DRIFT 2 CIRC 8SO

1212

LT6015MPS5#TRPBF

LT6015MPS5#TRPBF

Analog Devices, Inc.

IC OPAMP GP 1 CIRCUIT TSOT23-5

0

LT6100IDD#PBF

LT6100IDD#PBF

Analog Devices, Inc.

IC CURR SENSE 1 CIRCUIT 8DFN

428

LT1784IS5#TRMPBF

LT1784IS5#TRMPBF

Analog Devices, Inc.

IC OPAMP GP 1 CIRCUIT TSOT23-5

388

MAX9627ATC+

MAX9627ATC+

Analog Devices, Inc.

MAX9627 LOW-NOISE, LOW-DISTORTIO

3480

AD8604ARQZ-R7

AD8604ARQZ-R7

Analog Devices, Inc.

IC GP OPAMP 4 CIRCUIT 16QSOP

79000

LT1677CS8#PBF

LT1677CS8#PBF

Analog Devices, Inc.

IC OPAMP GP 1 CIRCUIT 8SO

3805

MAX404ESA

MAX404ESA

Analog Devices, Inc.

VIDEO OPERATIONAL AMPLIFIER

3472

LT1969CMS#TRPBF

LT1969CMS#TRPBF

Analog Devices, Inc.

IC OPAMP GP 2 CIRCUIT 10MSOP

0

AD5750ACPZ

AD5750ACPZ

Analog Devices, Inc.

IC INST AMP 1 CIRCUIT 32LFCSP

0

LT1815IS8#PBF

LT1815IS8#PBF

Analog Devices, Inc.

IC OPAMP VFB 1 CIRCUIT 8SO

189

AD548SQ/883B

AD548SQ/883B

Analog Devices, Inc.

LOW POWER, PRECISION OP AMP

1681

AD8422ARZ-RL

AD8422ARZ-RL

Analog Devices, Inc.

IC INST AMP 1 CIRCUIT 8SOIC

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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