Linear - Amplifiers - Instrumentation, OP Amps, Buffer Amps

Image Part Number Description / PDF Quantity Rfq
OP37EZ

OP37EZ

Analog Devices, Inc.

IC OPAMP GP 1 CIRCUIT 8DIP

12

MAX4238AUT

MAX4238AUT

Analog Devices, Inc.

LOW-NOISE, PRECISION AMPLIFIER

600

OP293ESZ-REEL7

OP293ESZ-REEL7

Analog Devices, Inc.

IC OPAMP GP 2 CIRCUIT 8SOIC

928

MAX4473ETA

MAX4473ETA

Analog Devices, Inc.

PA POWER CONTROL AMP FOR GSM

1651

JM38510/11402BPA

JM38510/11402BPA

Analog Devices, Inc.

OPERATIONAL AMPLIFIER, 1 FUNC, 7

160

LT1469CDF#PBF

LT1469CDF#PBF

Analog Devices, Inc.

IC OPAMP GP 2 CIRCUIT 12DFN

0

MAX4092AUA

MAX4092AUA

Analog Devices, Inc.

IC GP OPAMP 2 CIRCUIT 8UMAX

850

ICL7614DCSA

ICL7614DCSA

Analog Devices, Inc.

IC GP OPAMP 1 CIRCUIT 8SOIC

352

AD585AQ/+

AD585AQ/+

Analog Devices, Inc.

IC SAMPL/HOLD 1 CIRCUIT 14DIP

109

LTC6256CTS8#TRMPBF

LTC6256CTS8#TRMPBF

Analog Devices, Inc.

IC OPAMP GP 2 CIRCUIT TSOT23-8

73

AD706JRZ-REEL

AD706JRZ-REEL

Analog Devices, Inc.

IC OPAMP GP 2 CIRCUIT 8SOIC

1960

AD8028ARM-REEL

AD8028ARM-REEL

Analog Devices, Inc.

IC VOLTAGE FEEDBACK 2CIRC 10MSOP

22980

AD8652ARZ-REEL

AD8652ARZ-REEL

Analog Devices, Inc.

IC OPAMP VFB 2 CIRCUIT 8SOIC

0

AD8230YRZ-REEL7

AD8230YRZ-REEL7

Analog Devices, Inc.

IC OPAMP ZERO-DRIFT 1 CIRC 8SOIC

1868

LT6376HMS#TRPBF

LT6376HMS#TRPBF

Analog Devices, Inc.

IC OPAMP GP 1 CIRCUIT 16MSOP

0

AD8330ARQ-REEL

AD8330ARQ-REEL

Analog Devices, Inc.

IC VARIABLE GAIN 1 CIRC 16QSOP

22500

LTC6102HMS8#PBF

LTC6102HMS8#PBF

Analog Devices, Inc.

IC CURR SENSE 1 CIRCUIT 8MSOP

745

LTC2051HVHMS8#TRPBF

LTC2051HVHMS8#TRPBF

Analog Devices, Inc.

IC OPAMP ZERO-DRIFT 2 CIRC 8MSOP

0

LT6002IGN#PBF

LT6002IGN#PBF

Analog Devices, Inc.

IC OPAMP GP 4 CIRCUIT 16SSOP

200

OP64AZ

OP64AZ

Analog Devices, Inc.

HIGH-SPEED, WIDE B/W OP AMP

701

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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