Linear - Amplifiers - Instrumentation, OP Amps, Buffer Amps

Image Part Number Description / PDF Quantity Rfq
LTC6253HMS8#TRPBF

LTC6253HMS8#TRPBF

Analog Devices, Inc.

IC OPAMP GP 2 CIRCUIT 8MSOP

1917

LT1358IS8#PBF

LT1358IS8#PBF

Analog Devices, Inc.

IC OPAMP VFB 2 CIRCUIT 8SO

347

LT6013ACDD#PBF

LT6013ACDD#PBF

Analog Devices, Inc.

IC OPAMP GP 1 CIRCUIT 8DFN

0

LM2902EDR2G

LM2902EDR2G

Sanyo Semiconductor/ON Semiconductor

IC COMP QUAD SGL SUPPLY 14SOIC

0

AD8099ARD-REEL7

AD8099ARD-REEL7

Analog Devices, Inc.

IC VOLT FEEDBACK 1 CIRC 8SOIC

885

LP2902N/NOPB

LP2902N/NOPB

Texas Instruments

IC OPAMP GP 4 CIRCUIT 14DIP

768

HA3B2842-9

HA3B2842-9

VIDEO OPERATIONAL AMPLIFIER

1882

AD827SE/883B

AD827SE/883B

Analog Devices, Inc.

OPERATIONAL AMPLIFIER, 2 FUNC, 6

169

LMH6609MF/NOPB

LMH6609MF/NOPB

Texas Instruments

IC OPAMP VFB 1 CIRCUIT SOT23-5

149110000

BA2902YFV-MGE2

BA2902YFV-MGE2

ROHM Semiconductor

IC OPAMP GP 4 CIRCUIT 14SSOPB

2480

INA293B3QDBVRQ1

INA293B3QDBVRQ1

Texas Instruments

AEC-Q100 -4-V TO 110-V, 1.3MHZ,

2724

MAX44246ASA+T

MAX44246ASA+T

Maxim Integrated

IC OPAMP GP 2 CIRCUIT 8SOIC

2830

OPA4705EA/2K5

OPA4705EA/2K5

Texas Instruments

IC OPAMP GP 4 CIRCUIT 14TSSOP

0

MCP660T-E/ML

MCP660T-E/ML

Roving Networks / Microchip Technology

IC OPAMP GP 3 CIRCUIT 16QFN

0

NJU7031M#

NJU7031M#

New Japan Radio (NJR)

IC OPAMP GP 1 CIRCUIT 8DMP

0

LM837N

LM837N

IC GP OPAMP 4 CIRCUIT 14DIP

0

MCP6409-H/SL

MCP6409-H/SL

Roving Networks / Microchip Technology

IC OPAMP GP 4 CIRCUIT 14SOIC

435

EL2280CS

EL2280CS

Intersil (Renesas Electronics America)

VIDEO AMPLIFIER

5097

AD8014ARZ-REEL7

AD8014ARZ-REEL7

Analog Devices, Inc.

IC OPAMP CFA 1 CIRCUIT 8SOIC

272

OP284ES

OP284ES

Analog Devices, Inc.

IC GP OPAMP 2 CIRCUIT 8SOIC

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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