Linear - Amplifiers - Instrumentation, OP Amps, Buffer Amps

Image Part Number Description / PDF Quantity Rfq
MAX3864ESA

MAX3864ESA

Analog Devices, Inc.

IC GP OPAMP 1 CIRCUIT 8SOIC

4014

AD5750BCPZ

AD5750BCPZ

Analog Devices, Inc.

IC INST AMP 1 CIRCUIT 32LFCSP

5

AD524ARZ-16-REEL7

AD524ARZ-16-REEL7

Analog Devices, Inc.

IC INST AMP 1 CIRCUIT 16SOIC

0

MXL1007CS8

MXL1007CS8

Analog Devices, Inc.

OPERATIONAL AMPLIFIER

824

AD746JN

AD746JN

Analog Devices, Inc.

IC OPAMP JFET 2 CIRCUIT 8DIP

3221

LTC6363IMS8-1#TRPBF

LTC6363IMS8-1#TRPBF

Analog Devices, Inc.

IC OPAMP DIFF 1 CIRCUIT 8MSOP

0

LT1468IDD#PBF

LT1468IDD#PBF

Analog Devices, Inc.

IC OPAMP GP 1 CIRCUIT 8DFN

0

AD8370AREZ

AD8370AREZ

Analog Devices, Inc.

IC OPAMP VGA 1 CIRCUIT 16TSSOP

317

LT1802CS#TRPBF

LT1802CS#TRPBF

Analog Devices, Inc.

IC OPAMP GP 4 CIRCUIT 14SO

1132

ADA4610-4ARZ-R7

ADA4610-4ARZ-R7

Analog Devices, Inc.

IC OPAMP JFET 4 CIRCUIT 14SOIC

0

AD823AARZ

AD823AARZ

Analog Devices, Inc.

IC OPAMP JFET 2 CIRCUIT 8SOIC

0

AD8597ARZ-REEL7

AD8597ARZ-REEL7

Analog Devices, Inc.

IC OPAMP GP 1 CIRCUIT 8SOIC

602

LT1637HS8#PBF

LT1637HS8#PBF

Analog Devices, Inc.

IC OPAMP GP 1 CIRCUIT 8SO

687

ADA4891-4ARZ

ADA4891-4ARZ

Analog Devices, Inc.

IC OPAMP GP 4 CIRCUIT 14SOIC

407

AD8007AR

AD8007AR

Analog Devices, Inc.

IC CFA 1 CIRCUIT 8SOIC

94153

AMP03GSZ

AMP03GSZ

Analog Devices, Inc.

IC OPAMP DIFF 1 CIRCUIT 8SOIC

997

LT1672IS8#TRPBF

LT1672IS8#TRPBF

Analog Devices, Inc.

IC OPAMP GP 1 CIRCUIT 8SO

0

AD8519AR-REEL7

AD8519AR-REEL7

Analog Devices, Inc.

IC GP OPAMP 1 CIRCUIT 8SOIC

637

LT1209CS#PBF

LT1209CS#PBF

Analog Devices, Inc.

IC OPAMP GP 4 CIRCUIT 16SO

92

MAX4237AEUA

MAX4237AEUA

Analog Devices, Inc.

IC GP OPAMP 1 CIRCUIT 8UMAX

5567

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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