Linear - Amplifiers - Instrumentation, OP Amps, Buffer Amps

Image Part Number Description / PDF Quantity Rfq
AD8275BRMZ

AD8275BRMZ

Analog Devices, Inc.

IC OPAMP DIFF 1 CIRCUIT 8MSOP

267

LT1994MPDD#TRPBF

LT1994MPDD#TRPBF

Analog Devices, Inc.

IC OPAMP DIFF 1 CIRCUIT 8DFN

0

ADA4940-1ACPZ-R2

ADA4940-1ACPZ-R2

Analog Devices, Inc.

IC OPAMP DIFF 1 CIRCUIT 16LFCSP

0

MAX437CPA+

MAX437CPA+

Analog Devices, Inc.

OPERATIONAL AMPLIFIER

3887

AD8066AR-REEL7

AD8066AR-REEL7

Analog Devices, Inc.

IC VOLTAGE FEEDBACK 2 CIRC 8SOIC

2000

AD8011AR

AD8011AR

Analog Devices, Inc.

IC CFA 1 CIRCUIT 8SOIC

171436

MAX4275AOEUA

MAX4275AOEUA

Analog Devices, Inc.

IC GP OPAMP 2 CIRCUIT 8UMAX

1641

LTC6101AIS5#TRPBF

LTC6101AIS5#TRPBF

Analog Devices, Inc.

IC CURR SENSE 1 CIRCUIT TSOT23-5

1497

LT1490ACN8#PBF

LT1490ACN8#PBF

Analog Devices, Inc.

IC OPAMP GP 2 CIRCUIT 8DIP

2080

LT1128CS8#TRPBF

LT1128CS8#TRPBF

Analog Devices, Inc.

IC OPAMP GP 1 CIRCUIT 8SO

1938

ADA4637-1ARZ-R7

ADA4637-1ARZ-R7

Analog Devices, Inc.

IC OPAMP JFET 1 CIRCUIT 8SOIC

0

OP400GPZ

OP400GPZ

Analog Devices, Inc.

IC OPAMP GP 4 CIRCUIT 14DIP

438

LT6012CS#PBF

LT6012CS#PBF

Analog Devices, Inc.

IC OPAMP GP 4 CIRCUIT 14SO

2564

AD8666ARMZ

AD8666ARMZ

Analog Devices, Inc.

IC OPAMP GP 2 CIRCUIT 8MSOP

401

LTC6268IS6-10#TRMPBF

LTC6268IS6-10#TRMPBF

Analog Devices, Inc.

IC OPAMP GP SGL FET TSOT23-6

0

LT6023HDD-1#PBF

LT6023HDD-1#PBF

Analog Devices, Inc.

IC OPAMP GP 2 CIRCUIT 10DFN

106

LTC6227IDD#PBF

LTC6227IDD#PBF

Analog Devices, Inc.

PREC, LOW DRIFT & NOISE HI SPEED

292

AD708AQ

AD708AQ

Analog Devices, Inc.

IC OPAMP GP 2 CIRCUIT 8CERDIP

88

OP295GSZ-REEL7

OP295GSZ-REEL7

Analog Devices, Inc.

IC OPAMP GP 2 CIRCUIT 8SOIC

5934

5962-9086801MXC

5962-9086801MXC

Analog Devices, Inc.

OP AMP (AD9617SZ/883)

197

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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