Linear - Amplifiers - Instrumentation, OP Amps, Buffer Amps

Image Part Number Description / PDF Quantity Rfq
LT1630IS8#PBF

LT1630IS8#PBF

Analog Devices, Inc.

IC OPAMP GP 2 CIRCUIT 8SO

1403

LT1008S8#PBF

LT1008S8#PBF

Analog Devices, Inc.

IC OPAMP GP 1 CIRCUIT 8SO

231

MAX4183EUB

MAX4183EUB

Analog Devices, Inc.

IC CFA 2 CIRCUIT 10UMAX

134

AD648BH

AD648BH

Analog Devices, Inc.

DUAL OP AMP

807

LT1783CS5#TRPBF

LT1783CS5#TRPBF

Analog Devices, Inc.

IC OPAMP GP 1 CIRCUIT TSOT23-5

3353

LT6375IDF#PBF

LT6375IDF#PBF

Analog Devices, Inc.

IC OPAMP DIFF 1 CIRCUIT 14DFN

723

MAX437EPA

MAX437EPA

Analog Devices, Inc.

IC GP OPAMP 1 CIRCUIT 8DIP

0

LT1491CS#PBF

LT1491CS#PBF

Analog Devices, Inc.

IC OPAMP GP 4 CIRCUIT 14SO

935

LTC6269IMS8E-10#PBF

LTC6269IMS8E-10#PBF

Analog Devices, Inc.

IC OPAMP GP SGL FET 8MSOP

879

ADA4004-4ACPZ-R7

ADA4004-4ACPZ-R7

Analog Devices, Inc.

IC OPAMP GP 4 CIRCUIT 16LFCSP

4425

LTC6115IMS#PBF

LTC6115IMS#PBF

Analog Devices, Inc.

IC CURR SENSE 2 CIRCUIT 12MSOP

123

AD8643TRZ-EP

AD8643TRZ-EP

Analog Devices, Inc.

OPERATIONAL AMPLIFIER, 4 FUNC, 1

5820

MAX4166EPA

MAX4166EPA

Analog Devices, Inc.

IC GP OPAMP 1 CIRCUIT 8DIP

0

MAX4173HESA

MAX4173HESA

Analog Devices, Inc.

IC CURR SENSE 1 CIRCUIT 8SOIC

0

LT1819CS8#PBF

LT1819CS8#PBF

Analog Devices, Inc.

IC OPAMP VFB 2 CIRCUIT 8SO

1608

LT1356CS#TRPBF

LT1356CS#TRPBF

Analog Devices, Inc.

IC OPAMP VFB 4 CIRCUIT 16SO

1120

LTC6256CMS#TRPBF

LTC6256CMS#TRPBF

Analog Devices, Inc.

IC OPAMP GP 2 CIRCUIT 10MSOP

0

AD625SD

AD625SD

Analog Devices, Inc.

AD625 - PROG. GAIN IN AMP IC

565

AD8131ARMZ

AD8131ARMZ

Analog Devices, Inc.

IC OPAMP DIFF 1 CIRCUIT 8MSOP

593

MAX4253EUB

MAX4253EUB

Analog Devices, Inc.

IC GP OPAMP 2 CIRCUIT 10UMAX

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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