Linear - Amplifiers - Instrumentation, OP Amps, Buffer Amps

Image Part Number Description / PDF Quantity Rfq
MCP6021T-E/SN

MCP6021T-E/SN

Roving Networks / Microchip Technology

IC OPAMP GP 1 CIRCUIT 8SOIC

0

LT1994CDD#TRPBF

LT1994CDD#TRPBF

Analog Devices, Inc.

IC OPAMP DIFF 1 CIRCUIT 8DFN

0

LM124DT

LM124DT

STMicroelectronics

IC OPAMP GP 4 CIRCUIT 14SO

7084

LMV793MF/NOPB

LMV793MF/NOPB

Texas Instruments

IC OPAMP GP 1 CIRCUIT SOT23-5

6188

LT6001CMS8#PBF

LT6001CMS8#PBF

Analog Devices, Inc.

IC OPAMP GP 2 CIRCUIT 8MSOP

543

THS4281DGK

THS4281DGK

Texas Instruments

IC OPAMP VFB 1 CIRCUIT 8VSSOP

720

AD8671ARMZ-REEL

AD8671ARMZ-REEL

Analog Devices, Inc.

IC OPAMP GP 1 CIRCUIT 8MSOP

3795

LM358APWR

LM358APWR

Texas Instruments

IC OPAMP GP 2 CIRCUIT 8TSSOP

19375

OP15GS-REEL7

OP15GS-REEL7

Analog Devices, Inc.

PRECISION JFET-INPUT OP AMP

21000

LTC6229HDD#PBF

LTC6229HDD#PBF

Analog Devices, Inc.

PREC, LOW DRIFT & NOISE HI SPEED

6

OPA551FAKTWT

OPA551FAKTWT

Texas Instruments

IC OPAMP GP 1 CIRCUIT DDPAK

4147

LT1678CS8#TRPBF

LT1678CS8#TRPBF

Analog Devices, Inc.

IC OPAMP GP 2 CIRCUIT 8SO

2419

OPA187IDBVR

OPA187IDBVR

Texas Instruments

IC OPAMP ZER-DRIFT 1CIRC SOT23-5

1012

TLV2422MFKB

TLV2422MFKB

Texas Instruments

OPERATIONAL AMPLIFIER

102

ICL7612BCPAZ

ICL7612BCPAZ

Intersil (Renesas Electronics America)

IC GP OPAMP 1 CIRCUIT 8DIP

1994

ADA4051-2ARMZ

ADA4051-2ARMZ

Analog Devices, Inc.

IC OPAMP ZERO-DRIFT 2 CIRC 8MSOP

528

AD582KD

AD582KD

Analog Devices, Inc.

IC OPAMP SAMPL/HOLD 1CIRC 14CDIP

71

LT1787IS8#PBF

LT1787IS8#PBF

Analog Devices, Inc.

IC CURR SENSE 1 CIRCUIT 8SO

292

LMH6624MF

LMH6624MF

Texas Instruments

IC VOLT FEEDBACK 1CIRC SOT23-5

15166

OPA4354AIPWRG4

OPA4354AIPWRG4

Texas Instruments

IC OPAMP VFB 4 CIRCUIT 14TSSOP

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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