Linear - Amplifiers - Instrumentation, OP Amps, Buffer Amps

Image Part Number Description / PDF Quantity Rfq
MAX4474EUA+

MAX4474EUA+

Maxim Integrated

IC OPAMP GP 2 CIRCUIT 8UMAX

0

ADA4665-2ARMZ-RL

ADA4665-2ARMZ-RL

Analog Devices, Inc.

IC OPAMP GP 2 CIRCUIT 8MSOP

0

TLE2072AIP

TLE2072AIP

Texas Instruments

IC OPAMP JFET 2 CIRCUIT 8DIP

63

THS4130IDR

THS4130IDR

Texas Instruments

IC OPAMP DIFF 1 CIRCUIT 8SOIC

0

AD8206YRZ

AD8206YRZ

Analog Devices, Inc.

OPERATIONAL AMPLIFIER, 2000UV OF

0

UPC803G2-A

UPC803G2-A

Renesas Electronics America

DUAL OPERATIONAL AMPLIFIER

0

TSV358AIYDT

TSV358AIYDT

STMicroelectronics

IC OPAMP GP 2 CIRCUIT 8SO

2099

TSV912AIDGKT

TSV912AIDGKT

Texas Instruments

IC OPAMP GP 2 CIRCUIT 8VSSOP

718

LMV772MA

LMV772MA

OPERATIONAL AMPLIFIER, 2 FUNC, 1

0

LME49725MA/NOPB

LME49725MA/NOPB

Texas Instruments

OPERATIONAL AMPLIFIER

0

LTC6257IMS#PBF

LTC6257IMS#PBF

Analog Devices, Inc.

IC OPAMP GP 4 CIRCUIT 16MSOP

148

LT6013ACS8#TRPBF

LT6013ACS8#TRPBF

Analog Devices, Inc.

IC OPAMP GP 1 CIRCUIT 8SO

0

INA122U

INA122U

Texas Instruments

IC INST AMP 1 CIRCUIT 8SOIC

390

OP07EZ

OP07EZ

Texas Instruments

OPERATIONAL AMPLIFIER

368

EL8302ISZ-T7

EL8302ISZ-T7

Intersil (Renesas Electronics America)

IC OPAMP VFB 3 CIRCUIT 16SOIC

0

LT1361CS8#PBF

LT1361CS8#PBF

Analog Devices, Inc.

IC OPAMP VFB 2 CIRCUIT 8SO

1820

MAX4105ESA

MAX4105ESA

Analog Devices, Inc.

IC VOLTAGE FEEDBACK 1 CIRC 8SOIC

14802

OPA4316IPW

OPA4316IPW

Texas Instruments

IC OPAMP GP 4 CIRCUIT 14TSSOP

120

MAX9944ASA+T

MAX9944ASA+T

Maxim Integrated

IC OPAMP GP 2 CIRCUIT 8SOIC

3178

LT1397HDE#TRPBF

LT1397HDE#TRPBF

Analog Devices, Inc.

IC OPAMP CFA 4 CIRCUIT 14DFN

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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