Linear - Amplifiers - Instrumentation, OP Amps, Buffer Amps

Image Part Number Description / PDF Quantity Rfq
LTC6101VHVCHS5#TRPBF

LTC6101VHVCHS5#TRPBF

Analog Devices, Inc.

IC CURR SENSE 1 CIRCUIT TSOT23-5

0

CLC5665IN

CLC5665IN

IC CFA 1 CIRCUIT 8MDIP

2112

LT2078AIS8#TRPBF

LT2078AIS8#TRPBF

Analog Devices, Inc.

IC OPAMP GP 2 CIRCUIT 8SO

0

OP44EJ

OP44EJ

Analog Devices, Inc.

HIGH SPEED PRECISION OP AMP

1013

IVC102U

IVC102U

Texas Instruments

IC OPAMP TRANSIMP 1 CIRC 14SOIC

4273

TLV2461IDBVTG4

TLV2461IDBVTG4

Texas Instruments

IC OPAMP GP 1 CIRCUIT SOT23-5

0

LM8262MM/NOPB

LM8262MM/NOPB

Texas Instruments

IC OPAMP GP 2 CIRCUIT 8VSSOP

18674

MC34074VP

MC34074VP

IC GP OPAMP 4 CIRCUIT 14DIP

0

TL062ACDR

TL062ACDR

Texas Instruments

IC OPAMP JFET 2 CIRCUIT 8SOIC

5709

LT1179IN#PBF

LT1179IN#PBF

Analog Devices, Inc.

IC OPAMP GP 4 CIRCUIT 14DIP

0

TSV852IYST

TSV852IYST

STMicroelectronics

IC OPAMP GP 2 CIRCUIT 8MINISO

0

OPA2705EA/250G4

OPA2705EA/250G4

Texas Instruments

IC OPAMP GP 2 CIRCUIT 8VSSOP

0

AD781ANZ

AD781ANZ

Analog Devices, Inc.

IC OPAMP SAMPL/HOLD 1 CIRC 8DIP

0

BU7262SNUX-TR

BU7262SNUX-TR

ROHM Semiconductor

IC OPAMP GP 2 CIRC VSON008X2030

9937

AD8045ARD-REEL

AD8045ARD-REEL

Analog Devices, Inc.

IC VOLT FEEDBACK 1 CIRC 8SOIC

2500

LT1970AIFE#TRPBF

LT1970AIFE#TRPBF

Analog Devices, Inc.

IC OPAMP GP 1 CIRCUIT 20TSSOP

0

OPA2251UAG4

OPA2251UAG4

Texas Instruments

IC OPAMP GP 2 CIRCUIT 8SOIC

0

MAX4078EUD

MAX4078EUD

Analog Devices, Inc.

IC GP OPAMP 4 CIRCUIT 14TSSOP

2325

LM124AJ/PB

LM124AJ/PB

Texas Instruments

IC OPAMP GP 4 CIRCUIT 14CDIP

393

OPA860IDR

OPA860IDR

Texas Instruments

OPA860 WIDE BANDWIDTH OPERATIONA

21554

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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