Linear - Amplifiers - Instrumentation, OP Amps, Buffer Amps

Image Part Number Description / PDF Quantity Rfq
MAX4323ESA

MAX4323ESA

Analog Devices, Inc.

IC GP OPAMP 1 CIRCUIT 8SOIC

6497

LPV358IDR

LPV358IDR

Texas Instruments

IC GP OPAMP 2 CIRCUIT 8SOIC

20000

LT1638IDD#TRPBF

LT1638IDD#TRPBF

Analog Devices, Inc.

IC OPAMP GP 2 CIRCUIT 8DFN

626

AD8572AR

AD8572AR

Analog Devices, Inc.

IC ZERO-DRIFT 2 CIRCUIT 8SOIC

440

MC33172VDR2G

MC33172VDR2G

Sanyo Semiconductor/ON Semiconductor

IC OPAMP GP 2 CIRCUIT 8SOIC

0

OPA4354AID

OPA4354AID

Texas Instruments

IC OPAMP VFB 4 CIRCUIT 14SOIC

40

TLV2772QD

TLV2772QD

Texas Instruments

TLV2772 DUAL 2.7-V HIGH SLEW RAT

42261

LTC6244HMS8#TRPBF

LTC6244HMS8#TRPBF

Analog Devices, Inc.

IC OPAMP GP 2 CIRCUIT 8MSOP

2424

NTE987

NTE987

NTE Electronics, Inc.

IC-QUAD OP AMP 14-LEAD DIP

74

5962-0051201Q2A

5962-0051201Q2A

Texas Instruments

OPERATIONAL AMPLIFIER

95

TLC072IDGNR

TLC072IDGNR

Texas Instruments

IC OPAMP GP 2 CIRCUIT 8MSOP

2155

EL8403IS

EL8403IS

IC VOLTAGE FEEDBACK 4CIRC 14SOIC

0

LMH6628MA/NOPB

LMH6628MA/NOPB

Texas Instruments

IC OPAMP VFB 2 CIRCUIT 8SOIC

3999975

LT1884CS8#TRPBF

LT1884CS8#TRPBF

Analog Devices, Inc.

IC OPAMP GP 2 CIRCUIT 8SO

3488

AD8665ARZ

AD8665ARZ

Analog Devices, Inc.

IC OPAMP GP 1 CIRCUIT 8SOIC

141

SMP10FY

SMP10FY

Analog Devices, Inc.

SAMPLE-AND-HOLD AMPLIFIER

1399

TL33074DW

TL33074DW

Texas Instruments

IC OP AMP 16SOIC

557

LF353M

LF353M

Texas Instruments

IC OPAMP JFET 2 CIRCUIT 8SOIC

238

INA186A3IDCKT

INA186A3IDCKT

Texas Instruments

IC CURR SENSE 1 CIRCUIT SC70-6

863

MC33074AD

MC33074AD

OPERATIONAL AMPLIFIER

1587

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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