Linear - Amplifiers - Instrumentation, OP Amps, Buffer Amps

Image Part Number Description / PDF Quantity Rfq
TLE2061AMJGB

TLE2061AMJGB

Texas Instruments

TLE2061AM EXCALIBUR JFET-INPUT L

182

LMC660AIM/NOPB

LMC660AIM/NOPB

Texas Instruments

IC OPAMP GP 4 CIRCUIT 14SOIC

1905

TLE2082AIDRG4

TLE2082AIDRG4

Texas Instruments

IC OPAMP JFET 2 CIRCUIT 8SOIC

0

OPA445AUG4

OPA445AUG4

Texas Instruments

IC OPAMP GP 1 CIRCUIT 8SOIC

221

OPA4140AIPWR

OPA4140AIPWR

Texas Instruments

IC OPAMP JFET 4 CIRCUIT 14TSSOP

2006

MC1458D

MC1458D

Texas Instruments

IC OPAMP GP 2 CIRCUIT 8SOIC

1164

LMP8645MKE/NOPB

LMP8645MKE/NOPB

Texas Instruments

IC CURR SENSE 1 CIRCUIT TSOT23-6

1091

THS4130CDG4

THS4130CDG4

Texas Instruments

IC OPAMP DIFF 1 CIRCUIT 8SOIC

0

TLV2461MUB

TLV2461MUB

Texas Instruments

TLV2461M SINGLE, LOW POWER, RAIL

8

LMH6654MFX/NOPB

LMH6654MFX/NOPB

Texas Instruments

IC OPAMP VFB 1 CIRCUIT SOT23-5

0

TLV170IDBVR

TLV170IDBVR

Texas Instruments

IC OPAMP GP 1 CIRCUIT SOT23-5

0

THS4120CDGN

THS4120CDGN

Texas Instruments

THS4120 3.3 V, 100 MHZ, 43 V/US,

58040

OPA735AIDBVRG4

OPA735AIDBVRG4

Texas Instruments

IC OPAMP ZER-DRIFT 1CIRC SOT23-5

0

INA2181A2IDGSR

INA2181A2IDGSR

Texas Instruments

IC CURR SENSE 2 CIRCUIT 10VSSOP

0

OPA842IDBVTG4

OPA842IDBVTG4

Texas Instruments

IC OPAMP VFB 1 CIRCUIT SOT23-5

0

TLV2721IDBVR

TLV2721IDBVR

Texas Instruments

IC OPAMP GP 1 CIRCUIT SOT23-5

0

LMC6062AIMX/NOPB

LMC6062AIMX/NOPB

Texas Instruments

IC OPAMP GP 2 CIRCUIT 8SOIC

989

INA827AIDGK

INA827AIDGK

Texas Instruments

IC INST AMP 1 CIRCUIT 8VSSOP

5021

HPA00141AIDBVRG4

HPA00141AIDBVRG4

Texas Instruments

IC OPAMP ZER-DRIFT 1CIRC SOT23-5

0

OPA388ID

OPA388ID

Texas Instruments

IC OPAMP ZERO-DRIFT 1 CIRC 8SOIC

3225850

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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