Linear - Amplifiers - Instrumentation, OP Amps, Buffer Amps

Image Part Number Description / PDF Quantity Rfq
LMV2011MF/NOPB

LMV2011MF/NOPB

Texas Instruments

IC OPAMP GP 1 CIRCUIT SOT23-5

2411

THS4511RGTT

THS4511RGTT

Texas Instruments

IC OPAMP DIFF 1 CIRCUIT 16QFN

632

TL072IDRG4

TL072IDRG4

Texas Instruments

IC OPAMP JFET 2 CIRCUIT 8SOIC

0

TLV170IDBVT

TLV170IDBVT

Texas Instruments

IC OPAMP GP 1 CIRCUIT SOT23-5

1195

INA105KU/2K5

INA105KU/2K5

Texas Instruments

IC OPAMP DIFF 1 CIRCUIT 8SOIC

1912

INA4181A4QPWRQ1

INA4181A4QPWRQ1

Texas Instruments

IC CURR SENSE 4 CIRCUIT 20TSSOP

0

OPA137U/2K5

OPA137U/2K5

Texas Instruments

IC GP OPAMP 1 CIRCUIT 8SOIC

4285

LMV342IDGKRG4

LMV342IDGKRG4

Texas Instruments

IC OPAMP GP 2 CIRCUIT 8VSSOP

0

LT1014DMDWREP

LT1014DMDWREP

Texas Instruments

IC OPAMP GP 4 CIRCUIT 16SOIC

1425

THS3201DGNR

THS3201DGNR

Texas Instruments

IC OPAMP CFA 1 CIRCUIT 8MSOP

0

TLV2455CPW

TLV2455CPW

Texas Instruments

IC GP OPAMP 4 CIRCUIT 16TSSOP

22125

THS4601IDDA

THS4601IDDA

Texas Instruments

THS4601 WIDEBAND, FET-INPUT OPER

13559

OPA277UG4

OPA277UG4

Texas Instruments

IC OPAMP GP 1 CIRCUIT 8SOIC

0

OPA4243EA/250

OPA4243EA/250

Texas Instruments

IC OPAMP GP 4 CIRCUIT 14TSSOP

0

LM10BH/NOPB

LM10BH/NOPB

Texas Instruments

IC OPAMP GP 1 CIRCUIT TO5-8

0

OPA2835IRMCR

OPA2835IRMCR

Texas Instruments

OPA2835 DUAL, ULTRA LOW POWER, R

143548

INA190A1IDCKT

INA190A1IDCKT

Texas Instruments

IC CURR SENSE 1 CIRCUIT SC70-6

0

OPA2137E/250

OPA2137E/250

Texas Instruments

IC OPAMP GP 2 CIRCUIT 8VSSOP

1

OPA2342EA/250

OPA2342EA/250

Texas Instruments

IC OPAMP GP 2 CIRCUIT 8VSSOP

802010000

TLV2252AIPW

TLV2252AIPW

Texas Instruments

IC OPAMP GP 2 CIRCUIT 8TSSOP

680

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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