Linear - Amplifiers - Instrumentation, OP Amps, Buffer Amps

Image Part Number Description / PDF Quantity Rfq
MAX409ACSA

MAX409ACSA

Analog Devices, Inc.

IC GP OPAMP 1 CIRCUIT 8SOIC

640

AD626ARZ-REEL

AD626ARZ-REEL

Analog Devices, Inc.

IC OPAMP DIFF 1 CIRCUIT 8SOIC

0

LT6105HMS8#TRPBF

LT6105HMS8#TRPBF

Analog Devices, Inc.

IC CURR SENSE 1 CIRCUIT 8MSOP

11882

LTC2052HVCGN#PBF

LTC2052HVCGN#PBF

Analog Devices, Inc.

IC OPAMP ZERO-DRIFT 4CIRC 16SSOP

141

AD8556ARZ

AD8556ARZ

Analog Devices, Inc.

IC OPAMP ZERO-DRIFT 1 CIRC 8SOIC

146

AD8657ACPZ-R7

AD8657ACPZ-R7

Analog Devices, Inc.

OPERATIONAL AMPLIFIER, 2 FUNC, 9

1500

AD640JP-REEL7

AD640JP-REEL7

Analog Devices, Inc.

IC LOG AMP 1 CIRCUIT 20PLCC

7875

LT1970ACFE#PBF

LT1970ACFE#PBF

Analog Devices, Inc.

IC OPAMP GP 1 CIRCUIT 20TSSOP

3031

AD8510ARZ-REEL7

AD8510ARZ-REEL7

Analog Devices, Inc.

IC OPAMP JFET 1 CIRCUIT 8SOIC

136

LTC1992IMS8#TRPBF

LTC1992IMS8#TRPBF

Analog Devices, Inc.

IC OPAMP DIFF 1 CIRCUIT 8MSOP

4465

AD8619ARUZ-REEL

AD8619ARUZ-REEL

Analog Devices, Inc.

IC OPAMP GP 4 CIRCUIT 14TSSOP

2826

AD8548ARZ

AD8548ARZ

Analog Devices, Inc.

OPERATIONAL AMPLIFIER, 4 FUNC, 1

1772

MAX4461TESA

MAX4461TESA

Analog Devices, Inc.

IC INST AMP 1 CIRCUIT 8SOIC

0

AD515JH

AD515JH

Analog Devices, Inc.

IC GP OPAMP 1 CIRCUIT TO99-8

3382

AD8205YRZ

AD8205YRZ

Analog Devices, Inc.

IC OPAMP DIFF 1 CIRCUIT 8SOIC

0

AD8041ARZ-REEL

AD8041ARZ-REEL

Analog Devices, Inc.

IC OPAMP VFB 1 CIRCUIT 8SOIC

0

LT1999MPS8-20#PBF

LT1999MPS8-20#PBF

Analog Devices, Inc.

IC CURR SENSE 1 CIRCUIT 8SO

0

MXL1007ACN8

MXL1007ACN8

Analog Devices, Inc.

OPERATIONAL AMPLIFIER

2248

LMX321AXK

LMX321AXK

Analog Devices, Inc.

OPERATIONAL AMPLIFIER

0

ADA4692-4ARUZ-RL

ADA4692-4ARUZ-RL

Analog Devices, Inc.

IC OPAMP VFB 4 CIRCUIT 14TSSOP

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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