Linear - Amplifiers - Instrumentation, OP Amps, Buffer Amps

Image Part Number Description / PDF Quantity Rfq
LTC6431AIUF-15#PBF

LTC6431AIUF-15#PBF

Analog Devices, Inc.

IC OPAMP GP 1 CIRCUIT 24QFN

580

LT1167IS8#PBF

LT1167IS8#PBF

Analog Devices, Inc.

IC INST AMP 1 CIRCUIT 8SO

6619

LT1638CDD#PBF

LT1638CDD#PBF

Analog Devices, Inc.

IC OPAMP GP 2 CIRCUIT 8DFN

2319

LT6016MPMS8#TRPBF

LT6016MPMS8#TRPBF

Analog Devices, Inc.

IC OPAMP GP 2 CIRCUIT 8MSOP

708

ICL7612BCSA

ICL7612BCSA

Analog Devices, Inc.

IC GP OPAMP 1 CIRCUIT 8SOIC

3755

MAX4203ESA

MAX4203ESA

Analog Devices, Inc.

IC BUFFER 2 CIRCUIT 8SOIC

0

OP470GSZ

OP470GSZ

Analog Devices, Inc.

IC OPAMP GP 4 CIRCUIT 16SOIC

464

LTC6363HMS8-2#PBF

LTC6363HMS8-2#PBF

Analog Devices, Inc.

IC OPAMP DIFF 1 CIRCUIT 8MSOP

0

OP184FSZ

OP184FSZ

Analog Devices, Inc.

IC OPAMP GP 1 CIRCUIT 8SOIC

402

MAX4476AUT-T

MAX4476AUT-T

Analog Devices, Inc.

RAIL-RAIL OPERATIONAL AMPLIFIER

1989

AD842JH

AD842JH

Analog Devices, Inc.

IC GP OPAMP 1 CIRCUIT TO8-12

928

MAX2471EUT

MAX2471EUT

Analog Devices, Inc.

UTT 10 MHZ TO 500 MHZ VCO BUFFER

1596

AD746SQ

AD746SQ

Analog Devices, Inc.

IC OPAMP JFET 2 CIRCUIT 8CERDIP

381

AD8517ARTZ-REEL7

AD8517ARTZ-REEL7

Analog Devices, Inc.

IC GP OPAMP 1 CIRCUIT SOT23-5

2539

AD542JH/+

AD542JH/+

Analog Devices, Inc.

HIGH PERFORMANCE, BIFET OP AMPS

527

LTC2051HVCMS10#TRPBF

LTC2051HVCMS10#TRPBF

Analog Devices, Inc.

IC OPAMP ZERO-DRIFT 2CIRC 10MSOP

0

OP297GS-REEL7

OP297GS-REEL7

Analog Devices, Inc.

OP297 - PRECISION DUAL OPERATION

7000

AD8042ARZ-REEL7

AD8042ARZ-REEL7

Analog Devices, Inc.

IC OPAMP VFB 2 CIRCUIT 8SOIC

480

AD624BDZ

AD624BDZ

Analog Devices, Inc.

IC INST AMP 1 CIRCUIT 16CDIP

108

LT1114IS#PBF

LT1114IS#PBF

Analog Devices, Inc.

IC OPAMP GP 4 CIRCUIT 16SO

350

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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