Linear - Amplifiers - Instrumentation, OP Amps, Buffer Amps

Image Part Number Description / PDF Quantity Rfq
OPA2227UG4

OPA2227UG4

Texas Instruments

IC OPAMP GP 2 CIRCUIT 8SOIC

0

TLE2161CDG4

TLE2161CDG4

Texas Instruments

IC OPAMP JFET 1 CIRCUIT 8SOIC

0

TLV2404AIPWR

TLV2404AIPWR

Texas Instruments

QUAD OPERATIONAL AMPLIFIER

2000

TLV2254AIPW

TLV2254AIPW

Texas Instruments

TLV2254A QUAD LOW-VOLTAGE RAIL-T

747

OPA365AMDBVTEP

OPA365AMDBVTEP

Texas Instruments

IC OPAMP GP 1 CIRCUIT SOT23-5

1498

THS4511RGTR

THS4511RGTR

Texas Instruments

IC DIFF 1 CIRCUIT 16QFN

5979

LPV358IDGKR

LPV358IDGKR

Texas Instruments

IC GP OPAMP 2 CIRCUIT 8VSSOP

83947

UA748CDR

UA748CDR

Texas Instruments

OPERATIONAL AMPLIFIER

2500

TL052CDRE4

TL052CDRE4

Texas Instruments

IC OPAMP JFET 2 CIRCUIT 8SOIC

0

OPA857IRGTT

OPA857IRGTT

Texas Instruments

IC OPAMP GP 1 CIRCUIT 16VQFN

5632

TLV2784AIDR

TLV2784AIDR

Texas Instruments

TLV2784A QUAD 1.8V RRIO, 8MHZ AM

217829

OPA130UAG4

OPA130UAG4

Texas Instruments

IC OPAMP GP 1 CIRCUIT 8SOIC

0

LM224KD

LM224KD

Texas Instruments

IC GP OPAMP 4 CIRCUIT 14SOIC

1600

TLV271IDBVRG4

TLV271IDBVRG4

Texas Instruments

IC CMOS 1 CIRCUIT SOT23-5

0

OPA4187IPWR

OPA4187IPWR

Texas Instruments

IC OPAMP ZER-DRIFT 4CIRC 14TSSOP

355

TLE2021ID

TLE2021ID

Texas Instruments

IC OPAMP GP 1 CIRCUIT 8SOIC

397

LM6142AIMX/NOPB

LM6142AIMX/NOPB

Texas Instruments

IC OPAMP GP 2 CIRCUIT 8SOIC

3295

LMP8602QMME/NOPB

LMP8602QMME/NOPB

Texas Instruments

IC CURR SENSE 1 CIRCUIT 8VSSOP

6058

THS4631D

THS4631D

Texas Instruments

IC OPAMP GP 1 CIRCUIT 8SOIC

0

TLE2037IDR

TLE2037IDR

Texas Instruments

IC OPAMP GP 1 CIRCUIT 8SOIC

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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