Linear - Amplifiers - Instrumentation, OP Amps, Buffer Amps

Image Part Number Description / PDF Quantity Rfq
INA290A1IDCKT

INA290A1IDCKT

Texas Instruments

INA290A1IDCKT

0

TLV2332ID

TLV2332ID

Texas Instruments

TLV2332 DUAL LOW-VOLTAGE LOW-POW

1670

THS4501CD

THS4501CD

Texas Instruments

THS4501 HIGH-SPEED FULLY DIFFERE

26414

RV4558D

RV4558D

Texas Instruments

OPERATIONAL AMPLIFIER

0

LF347MX

LF347MX

Texas Instruments

IC OPAMP JFET 4 CIRCUIT 14SOIC

0

TLV2471CP

TLV2471CP

Texas Instruments

TLV2471 SINGLE 2.8MHZ, 600UA/CH

46900

LM7372IMAX/NOPB

LM7372IMAX/NOPB

Texas Instruments

IC OPAMP VFB 2 CIRCUIT 16SOIC

0

LMV324QPWRG4Q1

LMV324QPWRG4Q1

Texas Instruments

IC GP OPAMP 4 CIRCUIT 14TSSOP

41188

THS4561IDGKR

THS4561IDGKR

Texas Instruments

IC OPAMP DIFF 1 CIRCUIT 8VSSOP

1292

OPA333AIDCKT

OPA333AIDCKT

Texas Instruments

IC OPAMP ZERO-DRIFT 1CIRC SC70-5

173

OPA335AIDBVTG4

OPA335AIDBVTG4

Texas Instruments

IC OPAMP ZER-DRIFT 1CIRC SOT23-5

0

TLV9062IDDFR

TLV9062IDDFR

Texas Instruments

IC CMOS 2 CIRCUIT SOT23-8

1925

LMV358IDDUR

LMV358IDDUR

Texas Instruments

LMV358 DUAL LOW-VOLTAGE RAIL-TO-

370240

OPA4345EA/250

OPA4345EA/250

Texas Instruments

OPERATIONAL AMPLIFIER

0

TLV2462AQDREP

TLV2462AQDREP

Texas Instruments

IC OPAMP GP 2 CIRCUIT 8SOIC

0

OPA2317IDGKT

OPA2317IDGKT

Texas Instruments

IC OPAMP GP 2 CIRCUIT 8VSSOP

574

TLE2081IDR

TLE2081IDR

Texas Instruments

TLE2081 HIGH-SPEED JFET-INPUT OP

12113

LPV358IDR

LPV358IDR

Texas Instruments

IC GP OPAMP 2 CIRCUIT 8SOIC

20000

OPA4354AID

OPA4354AID

Texas Instruments

IC OPAMP VFB 4 CIRCUIT 14SOIC

40

TLV2772QD

TLV2772QD

Texas Instruments

TLV2772 DUAL 2.7-V HIGH SLEW RAT

42261

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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