Linear - Amplifiers - Instrumentation, OP Amps, Buffer Amps

Image Part Number Description / PDF Quantity Rfq
AD602JNZ

AD602JNZ

Analog Devices, Inc.

IC VARIABLE GAIN 2 CIRCUIT 16DIP

2820

LTC6101HVAHMS8#TRPBF

LTC6101HVAHMS8#TRPBF

Analog Devices, Inc.

IC CURR SENSE 1 CIRCUIT 8MSOP

0

LT1997HMS-1#TRPBF

LT1997HMS-1#TRPBF

Analog Devices, Inc.

IC CURR SENSE 1 CIRCUIT 16MSOP

0

OP484FS-REEL

OP484FS-REEL

Analog Devices, Inc.

IC GP OPAMP 4 CIRCUIT 14SOIC

28065

AD8542AR

AD8542AR

Analog Devices, Inc.

IC GP OPAMP 2 CIRCUIT 8SOIC

2344

MXL1179IN

MXL1179IN

Analog Devices, Inc.

QUAD PRECISION OP AMP

0

LMX358AUA+

LMX358AUA+

Analog Devices, Inc.

IC GP OPAMP 2 CIRCUIT 8UMAX

19163

ADL5561ACPZ-R7

ADL5561ACPZ-R7

Analog Devices, Inc.

IC OPAMP RF/IF DIFF 1CIR 16LFCSP

2424

MXL1178CN8

MXL1178CN8

Analog Devices, Inc.

IC GP OPAMP 2 CIRCUIT 8DIP

1909

AD743JR-16

AD743JR-16

Analog Devices, Inc.

IC OPAMP JFET 1 CIRCUIT 16SOIC

2018

AD8426ACPZ-WP

AD8426ACPZ-WP

Analog Devices, Inc.

IC INST AMP 2 CIRCUIT 16LFCSP

881

AD627AN

AD627AN

Analog Devices, Inc.

IC INST AMP 1 CIRCUIT 8DIP

0

82036022A

82036022A

Analog Devices, Inc.

OP AMP,200UV OFFSET-MAX

416

AD585JPZ

AD585JPZ

Analog Devices, Inc.

IC OPAMP SAMPL/HOLD 1CIRC 20PLCC

38

AD743JR-16-REEL

AD743JR-16-REEL

Analog Devices, Inc.

IC OPAMP JFET 1 CIRCUIT 16SOIC

1000

LTC6101CIS5#TRMPBF

LTC6101CIS5#TRMPBF

Analog Devices, Inc.

IC CURR SENSE 1 CIRCUIT TSOT23-5

2120

MAX4377FAUA

MAX4377FAUA

Analog Devices, Inc.

IC CURR SENSE 2 CIRCUIT 8UMAX

0

OP495GSZ

OP495GSZ

Analog Devices, Inc.

IC OPAMP GP 4 CIRCUIT 16SOIC

191

LT1810CMS8#TRPBF

LT1810CMS8#TRPBF

Analog Devices, Inc.

IC OPAMP GP 2 CIRCUIT 8MSOP

0

AD8512ARMZ

AD8512ARMZ

Analog Devices, Inc.

IC OPAMP JFET 2 CIRCUIT 8MSOP

1244

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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