Linear - Amplifiers - Instrumentation, OP Amps, Buffer Amps

Image Part Number Description / PDF Quantity Rfq
LT6119HMS-2#PBF

LT6119HMS-2#PBF

Analog Devices, Inc.

IC CURR SENSE 1 CIRCUIT 10MSOP

131

OP27EZ

OP27EZ

Analog Devices, Inc.

IC OPAMP GP 1 CIRCUIT 8CERDIP

42

LTC6226HS6#TRMPBF

LTC6226HS6#TRMPBF

Analog Devices, Inc.

PRECISION LOW DRIFT & NOISE HISP

532

AD8519AR

AD8519AR

Analog Devices, Inc.

IC GP OPAMP 1 CIRCUIT 8SOIC

80670

AD8479BRZ

AD8479BRZ

Analog Devices, Inc.

IC OPAMP GP 1 CIRCUIT 8SOIC

174

ADA4940-1ACPZ-RL

ADA4940-1ACPZ-RL

Analog Devices, Inc.

IC OPAMP DIFF 1 CIRCUIT 16LFCSP

0

OP02CZ

OP02CZ

Analog Devices, Inc.

GENERAL PURPOSE OP AMP

263

ADTL084ARUZ

ADTL084ARUZ

Analog Devices, Inc.

IC OPAMP JFET 4 CIRCUIT 14TSSOP

4

AD8475ARMZ-R7

AD8475ARMZ-R7

Analog Devices, Inc.

IC OPAMP DIFF 1 CIRCUIT 10MSOP

775

LTC2067HDD#PBF

LTC2067HDD#PBF

Analog Devices, Inc.

IC OPAMP ZERO-DRIFT 2 CIRC 10DFN

41

MAX4323ESA

MAX4323ESA

Analog Devices, Inc.

IC GP OPAMP 1 CIRCUIT 8SOIC

6497

LT1638IDD#TRPBF

LT1638IDD#TRPBF

Analog Devices, Inc.

IC OPAMP GP 2 CIRCUIT 8DFN

626

AD8572AR

AD8572AR

Analog Devices, Inc.

IC ZERO-DRIFT 2 CIRCUIT 8SOIC

440

LTC6244HMS8#TRPBF

LTC6244HMS8#TRPBF

Analog Devices, Inc.

IC OPAMP GP 2 CIRCUIT 8MSOP

2424

LT1884CS8#TRPBF

LT1884CS8#TRPBF

Analog Devices, Inc.

IC OPAMP GP 2 CIRCUIT 8SO

3488

AD8665ARZ

AD8665ARZ

Analog Devices, Inc.

IC OPAMP GP 1 CIRCUIT 8SOIC

141

SMP10FY

SMP10FY

Analog Devices, Inc.

SAMPLE-AND-HOLD AMPLIFIER

1399

ADA4807-2ACPZ-R7

ADA4807-2ACPZ-R7

Analog Devices, Inc.

IC OPAMP VFB 2 CIRCUIT 10LFCSP

2069

LT1999HS8-20#PBF

LT1999HS8-20#PBF

Analog Devices, Inc.

IC CURR SENSE 1 CIRCUIT 8SO

290

LT1789IS8-10#TRPBF

LT1789IS8-10#TRPBF

Analog Devices, Inc.

IC INST AMP 1 CIRCUIT 8SO

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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