Linear - Amplifiers - Instrumentation, OP Amps, Buffer Amps

Image Part Number Description / PDF Quantity Rfq
MCP6482T-E/MNY

MCP6482T-E/MNY

Roving Networks / Microchip Technology

IC OPAMP GP 2 CIRCUIT 8TDFN

214

OPA187ID

OPA187ID

Texas Instruments

IC OPAMP ZERO-DRIFT 1 CIRC 8SOIC

7859975

INA212CIDCKR

INA212CIDCKR

Texas Instruments

IC CURR SENSE 1 CIRCUIT SC70-6

3213

INA212BIRSWR

INA212BIRSWR

Texas Instruments

IC CURR SENSE 1 CIRCUIT 10UQFN

1557

MCP6275-E/MS

MCP6275-E/MS

Roving Networks / Microchip Technology

IC OPAMP GP 2 CIRCUIT 8MSOP

700

OPA333AIDCKR

OPA333AIDCKR

Texas Instruments

OPA333 1.8V, 17A, MICROPOWER, PR

0

INA281B5QDBVRQ1

INA281B5QDBVRQ1

Texas Instruments

AEC-Q100, -4-V TO 110-V, 1.3-MHZ

3000

MAX4482ASA

MAX4482ASA

Analog Devices, Inc.

IC GP OPAMP 2 CIRCUIT 8SOIC

2338

THS4281DR

THS4281DR

Texas Instruments

THS4281 VERY LOW-POWER HIGH SPEE

369235

LT1816IDD#PBF

LT1816IDD#PBF

Analog Devices, Inc.

IC OPAMP VFB 2 CIRCUIT 8DFN

162

LTC6416CDDB#TRMPBF

LTC6416CDDB#TRMPBF

Analog Devices, Inc.

IC BUFFER 1 CIRCUIT 10DFN

0

AD8045ACPZ-REEL7

AD8045ACPZ-REEL7

Analog Devices, Inc.

IC OPAMP VFB 1 CIRCUIT 8LFCSP

1

AD8061ART-REEL7

AD8061ART-REEL7

Analog Devices, Inc.

IC VOLT FEEDBACK 1CIRC SOT23-5

20654

ISL28535FVZ-T7A

ISL28535FVZ-T7A

Intersil (Renesas Electronics America)

IC OPAMP ZER-DRIFT 1CIRC 14TSSOP

0

OPA627APG4

OPA627APG4

Texas Instruments

IC OPAMP GP 1 CIRCUIT 8DIP

0

PM208AZ

PM208AZ

Analog Devices, Inc.

LOW IN CURRENT OP AMP

1145

MCP6D11T-E/MG

MCP6D11T-E/MG

Roving Networks / Microchip Technology

IC OPAMP DIFF 1 CIRCUIT 16QFN

0

LM358LVIDGKR

LM358LVIDGKR

Texas Instruments

IC OPAMP GP 2 CIRCUIT 8VSSOP

17528

LMC6492BEMX

LMC6492BEMX

OPERATIONAL AMPLIFIER

3418

SY88307BLEY

SY88307BLEY

Roving Networks / Microchip Technology

IC OPAMP LIMITING 1 CIRC 10MSOP

79

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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