Linear - Amplifiers - Instrumentation, OP Amps, Buffer Amps

Image Part Number Description / PDF Quantity Rfq
OPA4134UAG4

OPA4134UAG4

Texas Instruments

IC AUDIO 4 CIRCUIT 14SOIC

0

TLE2072CDRG4

TLE2072CDRG4

Texas Instruments

IC OPAMP JFET 2 CIRCUIT 8SOIC

0

LF356M/NOPB

LF356M/NOPB

Texas Instruments

IC OPAMP JFET 1 CIRCUIT 8SOIC

2866

OPA3684IDR

OPA3684IDR

Texas Instruments

IC OPAMP CFA 3 CIRCUIT 14SOIC

0

OPA2241UA

OPA2241UA

Texas Instruments

IC OPAMP GP 2 CIRCUIT 8SOIC OPA2241UA

5000

ONET4201PARGTR

ONET4201PARGTR

Texas Instruments

IC OPAMP LIMITING 1 CIRC 16QFN

2850

LMC6032IN/NOPB

LMC6032IN/NOPB

Texas Instruments

IC OPAMP GP 2 CIRCUIT 8DIP

493

INA128UA/2K5

INA128UA/2K5

Texas Instruments

IC INST AMP 1 CIRCUIT 8SOIC

0

TLC27L4BID

TLC27L4BID

Texas Instruments

IC OPAMP GP 4 CIRCUIT 14SOIC

370

TLC274CPW

TLC274CPW

Texas Instruments

IC OPAMP GP 4 CIRCUIT 14TSSOP

353

OPA4317IPW

OPA4317IPW

Texas Instruments

IC OPAMP GP 4 CIRCUIT 14TSSOP

1001

TLE2141ID

TLE2141ID

Texas Instruments

IC OPAMP GP 1 CIRCUIT 8SOIC

656

LT1014DING4

LT1014DING4

Texas Instruments

IC OPAMP GP 4 CIRCUIT 14DIP

0

TLE2142CDRG4

TLE2142CDRG4

Texas Instruments

IC OPAMP GP 2 CIRCUIT 8SOIC

0

TLV2322IP

TLV2322IP

Texas Instruments

IC OPAMP GP 2 CIRCUIT 8DIP

298

RC4558PS

RC4558PS

Texas Instruments

OPERATIONAL AMPLIFIER

5840

OPA734AID

OPA734AID

Texas Instruments

OPA734 SINGLE 0.05UV/DEGC (MAX)

19519

LM2902KAVQPWRG4

LM2902KAVQPWRG4

Texas Instruments

IC OPAMP GP 4 CIRCUIT 14TSSOP

390

LME49724MRX/NOPB

LME49724MRX/NOPB

Texas Instruments

IC AUDIO 1 CIRCUIT 8SOPWRPAD

11710

LMV931MFX

LMV931MFX

Texas Instruments

IC GP OPAMP 1 CIRCUIT SOT23-5

147000

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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