Linear - Amplifiers - Instrumentation, OP Amps, Buffer Amps

Image Part Number Description / PDF Quantity Rfq
AD548AQ

AD548AQ

Analog Devices, Inc.

PRECISION, LOW POWER OP AMP

23523

AD8552ARUZ-REEL

AD8552ARUZ-REEL

Analog Devices, Inc.

IC OPAMP ZERO-DRIFT 2CIRC 8TSSOP

6547

AD826AR-REEL

AD826AR-REEL

Analog Devices, Inc.

IC VOLTAGE FEEDBACK 2 CIRC 8SOIC

132

MAX4493AUK

MAX4493AUK

Analog Devices, Inc.

RAIL-RAIL OPERATIONAL AMPLIFIER

1515

AD8592ARMZ-REEL

AD8592ARMZ-REEL

Analog Devices, Inc.

IC OPAMP GP 2 CIRCUIT 10MSOP

2722

ADA4665-2ARMZ-RL

ADA4665-2ARMZ-RL

Analog Devices, Inc.

IC OPAMP GP 2 CIRCUIT 8MSOP

0

AD8206YRZ

AD8206YRZ

Analog Devices, Inc.

OPERATIONAL AMPLIFIER, 2000UV OF

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

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

LT1397HDE#TRPBF

LT1397HDE#TRPBF

Analog Devices, Inc.

IC OPAMP CFA 4 CIRCUIT 14DFN

0

LTC6101VHVCHS5#TRPBF

LTC6101VHVCHS5#TRPBF

Analog Devices, Inc.

IC CURR SENSE 1 CIRCUIT TSOT23-5

0

LT2078AIS8#TRPBF

LT2078AIS8#TRPBF

Analog Devices, Inc.

IC OPAMP GP 2 CIRCUIT 8SO

0

OP44EJ

OP44EJ

Analog Devices, Inc.

HIGH SPEED PRECISION OP AMP

1013

LT1179IN#PBF

LT1179IN#PBF

Analog Devices, Inc.

IC OPAMP GP 4 CIRCUIT 14DIP

0

AD781ANZ

AD781ANZ

Analog Devices, Inc.

IC OPAMP SAMPL/HOLD 1 CIRC 8DIP

0

AD8045ARD-REEL

AD8045ARD-REEL

Analog Devices, Inc.

IC VOLT FEEDBACK 1 CIRC 8SOIC

2500

LT1970AIFE#TRPBF

LT1970AIFE#TRPBF

Analog Devices, Inc.

IC OPAMP GP 1 CIRCUIT 20TSSOP

0

MAX4078EUD

MAX4078EUD

Analog Devices, Inc.

IC GP OPAMP 4 CIRCUIT 14TSSOP

2325

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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