Linear - Amplifiers - Instrumentation, OP Amps, Buffer Amps

Image Part Number Description / PDF Quantity Rfq
ADA4637-1ARZ-RL

ADA4637-1ARZ-RL

Analog Devices, Inc.

IC OPAMP JFET 1 CIRCUIT 8SOIC

0

LT1784CS6#TRPBF

LT1784CS6#TRPBF

Analog Devices, Inc.

IC OPAMP GP 1 CIRCUIT TSOT23-6

0

OP12EZ

OP12EZ

Analog Devices, Inc.

PRECISION LOW-INPUT CURR. OP AMP

2132

LT6118IMS8#PBF

LT6118IMS8#PBF

Analog Devices, Inc.

IC CURR SENSE 1 CIRCUIT 8MSOP

4784

OP249GS

OP249GS

Analog Devices, Inc.

IC OPAMP JFET 2 CIRCUIT 8SOIC

3770

MAX4038EUA

MAX4038EUA

Analog Devices, Inc.

IC GP OPAMP 1 CIRCUIT 8UMAX

1447

LT2078AIS8#PBF

LT2078AIS8#PBF

Analog Devices, Inc.

IC OPAMP GP 2 CIRCUIT 8SO

620

LTC6258IDC#TRMPBF

LTC6258IDC#TRMPBF

Analog Devices, Inc.

IC OPAMP GP 1 CIRCUIT 6DFN

1013

LTC6259HMS8#PBF

LTC6259HMS8#PBF

Analog Devices, Inc.

IC OPAMP GP 2 CIRCUIT 8MSOP

105

LT1881CS8#PBF

LT1881CS8#PBF

Analog Devices, Inc.

IC OPAMP GP 2 CIRCUIT 8SO

1438

LT1112S8#PBF

LT1112S8#PBF

Analog Devices, Inc.

IC OPAMP GP 2 CIRCUIT 8SO

14080

MAX4254ESD+

MAX4254ESD+

Analog Devices, Inc.

IC GP OPAMP 4 CIRCUIT 14SOIC

3239

LTC6362HDD#PBF

LTC6362HDD#PBF

Analog Devices, Inc.

IC OPAMP DIFF 1 CIRCUIT 8DFN

104

MAX4185EUB

MAX4185EUB

Analog Devices, Inc.

IC CFA 2 CIRCUIT 10UMAX

6069

LT1219LCS8#TRPBF

LT1219LCS8#TRPBF

Analog Devices, Inc.

IC OPAMP GP 1 CIRCUIT 8SO

0

LT1672IS8#PBF

LT1672IS8#PBF

Analog Devices, Inc.

IC OPAMP GP 1 CIRCUIT 8SO

1652

LTC6244IDD#PBF

LTC6244IDD#PBF

Analog Devices, Inc.

IC OPAMP GP 2 CIRCUIT 8DFN

1457

MAX4476AUT#G16

MAX4476AUT#G16

Analog Devices, Inc.

RAIL-RAIL OPERATIONAL AMPLIFIER

3074

MAX406BEPA

MAX406BEPA

Analog Devices, Inc.

IC GP OPAMP 1 CIRCUIT 8DIP

3661

AD8601ARTZ-R2

AD8601ARTZ-R2

Analog Devices, Inc.

IC OPAMP GP 1 CIRCUIT SOT23-5

2728

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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