Linear - Amplifiers - Instrumentation, OP Amps, Buffer Amps

Image Part Number Description / PDF Quantity Rfq
MAX4231AUT

MAX4231AUT

Analog Devices, Inc.

RAIL-RAIL OPERATIONAL AMPLIFIER

699

LT1369CS#TRPBF

LT1369CS#TRPBF

Analog Devices, Inc.

IC OPAMP GP 4 CIRCUIT 14SO

0

LT1999HS8-50#TRPBF

LT1999HS8-50#TRPBF

Analog Devices, Inc.

IC CURR SENSE 1 CIRCUIT 8SO

0

PM308J

PM308J

Analog Devices, Inc.

OPERATIONAL AMPLIFIER

383

ADA4000-2ARMZ-RL

ADA4000-2ARMZ-RL

Analog Devices, Inc.

IC OPAMP JFET 2 CIRCUIT 8MSOP

0

OP44AJ

OP44AJ

Analog Devices, Inc.

HIGH SPEED PRECISION OP AMP

0

AMP04ESZ

AMP04ESZ

Analog Devices, Inc.

IC INST AMP 1 CIRCUIT 8SOIC

1452

LT6230CS6-10#TRMPBF

LT6230CS6-10#TRMPBF

Analog Devices, Inc.

IC OPAMP GP 1 CIRCUIT TSOT23-6

0

LTC6241HVCS8#TRPBF

LTC6241HVCS8#TRPBF

Analog Devices, Inc.

IC OPAMP GP 2 CIRCUIT 8SO

0

OP462GSZ

OP462GSZ

Analog Devices, Inc.

IC OPAMP GP 4 CIRCUIT 14SOIC

121

OP42FZ

OP42FZ

Analog Devices, Inc.

IC OPAMP JFET 1 CIRCUIT 8CERDIP

142

LTC2050IS5#TRPBF

LTC2050IS5#TRPBF

Analog Devices, Inc.

IC OPAMP ZER-DRIFT 1CIR TSOT23-5

19249

ADA4077-1ARMZ

ADA4077-1ARMZ

Analog Devices, Inc.

IC OPAMP GP 1 CIRCUIT 8MSOP

346

AD8628WARZ-RL

AD8628WARZ-RL

Analog Devices, Inc.

IC ZERO-DRIFT 1 CIRCUIT 8SOIC

9172

OP296GS-REEL7

OP296GS-REEL7

Analog Devices, Inc.

IC GP OPAMP 2 CIRCUIT 8SOIC

9350

AD627ARZ-R7

AD627ARZ-R7

Analog Devices, Inc.

IC INST AMP 1 CIRCUIT 8SOIC

12535

ICL7650CPD+

ICL7650CPD+

Analog Devices, Inc.

IC CHOPPER 1 CIRCUIT 14DIP

5952

LT1638CS8#PBF

LT1638CS8#PBF

Analog Devices, Inc.

IC OPAMP GP 2 CIRCUIT 8SO

2958

LT1813CDD#TRPBF

LT1813CDD#TRPBF

Analog Devices, Inc.

IC OPAMP VFB 2 CIRCUIT 8DFN

0

LT1398CS#TRPBF

LT1398CS#TRPBF

Analog Devices, Inc.

IC OPAMP CFA 2 CIRCUIT 16SO

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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