Linear - Amplifiers - Instrumentation, OP Amps, Buffer Amps

Image Part Number Description / PDF Quantity Rfq
OPA192IDGKT

OPA192IDGKT

Texas Instruments

IC OPAMP GP 1 CIRCUIT 8VSSOP

16410000

LMP7718MAX/NOPB

LMP7718MAX/NOPB

Texas Instruments

IC OPAMP GP 2 CIRCUIT 8SOIC

0

LMV712Q1MMX/NOPB

LMV712Q1MMX/NOPB

Texas Instruments

LMV712-N-Q1 AUTOMOTIVE, DUAL, LO

6930

INA819IDGKT

INA819IDGKT

Texas Instruments

IC INST AMP 1 CIRCUIT 8VSSOP

1964

ADA4637-1ARZ-R7

ADA4637-1ARZ-R7

Analog Devices, Inc.

IC OPAMP JFET 1 CIRCUIT 8SOIC

0

OP400GPZ

OP400GPZ

Analog Devices, Inc.

IC OPAMP GP 4 CIRCUIT 14DIP

438

THS4631DG4

THS4631DG4

Texas Instruments

IC OPAMP GP 1 CIRCUIT 8SOIC

0

TLV2252AQDREP

TLV2252AQDREP

Texas Instruments

IC OPAMP GP 2 CIRCUIT 8SOIC

0

LT6012CS#PBF

LT6012CS#PBF

Analog Devices, Inc.

IC OPAMP GP 4 CIRCUIT 14SO

2564

TLE2161ACD

TLE2161ACD

Texas Instruments

TLE2161A EXCALIBUR JFET-INPUT HI

9516

AD8666ARMZ

AD8666ARMZ

Analog Devices, Inc.

IC OPAMP GP 2 CIRCUIT 8MSOP

401

TLE2024MFKB

TLE2024MFKB

Texas Instruments

TLE2024M HIGH-SPEED, LOW-POWER,

202

LTC6268IS6-10#TRMPBF

LTC6268IS6-10#TRMPBF

Analog Devices, Inc.

IC OPAMP GP SGL FET TSOT23-6

0

LM4565FVJ-GE2

LM4565FVJ-GE2

ROHM Semiconductor

IC OPAMP GP 2 CIRCUIT 8TSSOP

2491

LT6023HDD-1#PBF

LT6023HDD-1#PBF

Analog Devices, Inc.

IC OPAMP GP 2 CIRCUIT 10DFN

106

LMV981MF/NOPB

LMV981MF/NOPB

Texas Instruments

IC OPAMP GP 1 CIRCUIT SOT23-6

3652

LTC6227IDD#PBF

LTC6227IDD#PBF

Analog Devices, Inc.

PREC, LOW DRIFT & NOISE HI SPEED

292

AD708AQ

AD708AQ

Analog Devices, Inc.

IC OPAMP GP 2 CIRCUIT 8CERDIP

88

OP295GSZ-REEL7

OP295GSZ-REEL7

Analog Devices, Inc.

IC OPAMP GP 2 CIRCUIT 8SOIC

5934

TLV2262AQD

TLV2262AQD

Texas Instruments

IC GP OPAMP 2 CIRCUIT 8SOIC

6167

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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