Linear - Amplifiers - Instrumentation, OP Amps, Buffer Amps

Image Part Number Description / PDF Quantity Rfq
TLV9351IDBVR

TLV9351IDBVR

Texas Instruments

OPAMP

2401

TLC27L2ACPSG4

TLC27L2ACPSG4

Texas Instruments

IC OPAMP GP 2 CIRCUIT 8SO

0

LMC6081IN

LMC6081IN

OPERATIONAL AMPLIFIER

285

LT6011AIS8#PBF

LT6011AIS8#PBF

Analog Devices, Inc.

IC OPAMP GP 2 CIRCUIT 8SO

286

LT1996AIMS#PBF

LT1996AIMS#PBF

Analog Devices, Inc.

IC OPAMP PGA 1 CIRCUIT 10MSOP

1241

AD8273ARZ-R7

AD8273ARZ-R7

Analog Devices, Inc.

IC AUDIO 2 CIRCUIT 14SOIC

0

OPA548FKTWTG3

OPA548FKTWTG3

Texas Instruments

IC OPAMP POWER 1 CIRCUIT DDPAK

23910000

AD8092ARM-REEL

AD8092ARM-REEL

Analog Devices, Inc.

IC VOLTAGE FEEDBACK 2 CIRC 8MSOP

15000

TLE2142IDRG4

TLE2142IDRG4

Texas Instruments

IC OPAMP GP 2 CIRCUIT 8SOIC

0

MAX407ESA

MAX407ESA

Analog Devices, Inc.

IC GP OPAMP 2 CIRCUIT 8SOIC

0

TLE2064AMDR

TLE2064AMDR

Texas Instruments

TLE2064AM-D JFET-INPUT IMPROVED

4575

LM833P

LM833P

Texas Instruments

IC AUDIO 2 CIRCUIT 8DIP

1829

EL2228CSZ

EL2228CSZ

IC VOLTAGE FEEDBACK 2 CIRC 8SOIC

75

THS3111IDR

THS3111IDR

Texas Instruments

THS3111 SINGLE, LOW NOISE, HIGH

7202

TLC277IDG4

TLC277IDG4

Texas Instruments

IC OPAMP GP 2 CIRCUIT 8SOIC

0

LT1037CL

LT1037CL

Texas Instruments

OPERATIONAL AMPLIFIER

451

OPA2354AIDDARG3

OPA2354AIDDARG3

Texas Instruments

IC OPAMP VFB 2 CIRCUIT 8SOPWRPAD

0

LT1101CN8#PBF

LT1101CN8#PBF

Analog Devices, Inc.

IC INST AMP 1 CIRCUIT 8DIP

683

LM709AW/883

LM709AW/883

OPERATIONAL AMPLIFIER

227

RC4558IP

RC4558IP

Texas Instruments

IC OPAMP GP 2 CIRCUIT 8DIP

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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