Linear - Amplifiers - Instrumentation, OP Amps, Buffer Amps

Image Part Number Description / PDF Quantity Rfq
MAX4257EUA

MAX4257EUA

Analog Devices, Inc.

IC GP OPAMP 2 CIRCUIT 8UMAX

0

AD8253ARMZ

AD8253ARMZ

Analog Devices, Inc.

IC INST AMP 1 CIRCUIT 10MSOP

5541

LTC1050HS8#TRPBF

LTC1050HS8#TRPBF

Analog Devices, Inc.

IC OPAMP ZERO-DRIFT 1 CIRC 8SO

0

AD744AQ

AD744AQ

Analog Devices, Inc.

IC OPAMP JFET 1 CIRCUIT 8CERDIP

8

AD602SQ/883B

AD602SQ/883B

Analog Devices, Inc.

DUAL VARIABLE GAIN AMPLIFIE

1538

LTC6101HVCHS5#TRMPBF

LTC6101HVCHS5#TRMPBF

Analog Devices, Inc.

IC CURR SENSE 1 CIRCUIT TSOT23-5

0

LT1168ACS8#TRPBF

LT1168ACS8#TRPBF

Analog Devices, Inc.

IC INST AMP 1 CIRCUIT 8SO

0

5962-8777101M3A

5962-8777101M3A

Analog Devices, Inc.

IC OPAMP GP 4 CIRCUIT 20CLCC

1

LT6100HDD#PBF

LT6100HDD#PBF

Analog Devices, Inc.

IC CURR SENSE 1 CIRCUIT 8DFN

507

LT6600IS8-10#PBF

LT6600IS8-10#PBF

Analog Devices, Inc.

IC OPAMP DIFF 1 CIRCUIT 8SO

483

ADA4861-3YRZ-RL7

ADA4861-3YRZ-RL7

Analog Devices, Inc.

IC OPAMP CFA 3 CIRCUIT 14SOIC

449

MAX407EPA

MAX407EPA

Analog Devices, Inc.

IC GP OPAMP 2 CIRCUIT 8DIP

0

MAX480CSA

MAX480CSA

Analog Devices, Inc.

IC GP OPAMP 1 CIRCUIT 8SOIC

270

5962-8856501CA

5962-8856501CA

Analog Devices, Inc.

IC OPAMP GP 4 CIRCUIT 14CERDIP

0

LT1228CS8#TRPBF

LT1228CS8#TRPBF

Analog Devices, Inc.

IC OPAMP CFA 1 CIRCUIT 8SO

2691

AD8250ARMZ-RL

AD8250ARMZ-RL

Analog Devices, Inc.

IC INST AMP 1 CIRCUIT 10MSOP

0

LT1991HDD#TRPBF

LT1991HDD#TRPBF

Analog Devices, Inc.

IC OPAMP PGA 1 CIRCUIT 10DFN

0

LT6200CS8-5#PBF

LT6200CS8-5#PBF

Analog Devices, Inc.

IC OPAMP GP 1 CIRCUIT 8SO

184

LTC2067HMS8#TRPBF

LTC2067HMS8#TRPBF

Analog Devices, Inc.

IC OPAMP ZERO-DRIFT 2 CIRC 8MSOP

0

AD8421BRMZ-RL

AD8421BRMZ-RL

Analog Devices, Inc.

IC INST AMP 1 CIRCUIT 8MSOP

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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