Linear - Amplifiers - Instrumentation, OP Amps, Buffer Amps

Image Part Number Description / PDF Quantity Rfq
AD8570ACP-REEL7

AD8570ACP-REEL7

Analog Devices, Inc.

IC BUFFER 8 CIRCUIT 32LFCSP

11756

OP181GS-REEL7

OP181GS-REEL7

Analog Devices, Inc.

OPERATIONAL AMPLIFIER

2850

LT1013IN8#PBF

LT1013IN8#PBF

Analog Devices, Inc.

IC OPAMP GP 2 CIRCUIT 8DIP

137

AD8606ARZ

AD8606ARZ

Analog Devices, Inc.

IC OPAMP GP 2 CIRCUIT 8SOIC

164

LT6370HDD#TRPBF

LT6370HDD#TRPBF

Analog Devices, Inc.

IC INST AMP 1 CIRCUIT 10DFN

0

AD847ARZ-REEL7

AD847ARZ-REEL7

Analog Devices, Inc.

IC OPAMP GP 1 CIRCUIT 8SOIC

592

MAX4462UESA

MAX4462UESA

Analog Devices, Inc.

IC INST AMP 1 CIRCUIT 8SOIC

5308

AD8222HBCPZ-RL

AD8222HBCPZ-RL

Analog Devices, Inc.

IC INST AMP 2 CIRCUIT 16LFCSP

0

ADA4627-1ARZ-R7

ADA4627-1ARZ-R7

Analog Devices, Inc.

IC OPAMP JFET 1 CIRCUIT 8SOIC

567

LTC2057HVIDD#PBF

LTC2057HVIDD#PBF

Analog Devices, Inc.

IC OPAMP ZERO-DRIFT 1 CIRC 8DFN

174

LT1999HS8-10#PBF

LT1999HS8-10#PBF

Analog Devices, Inc.

IC CURR SENSE 1 CIRCUIT 8SO

200

OP20CJ

OP20CJ

Analog Devices, Inc.

DUAL LOW OFFSET LOW POWER OP AMP

358

LTC6363HDCB#TRPBF

LTC6363HDCB#TRPBF

Analog Devices, Inc.

IC OPAMP DIFF 1 CIRCUIT 8DFN

0

LTC6102HVHMS8#TRPBF

LTC6102HVHMS8#TRPBF

Analog Devices, Inc.

IC CURR SENSE 1 CIRCUIT 8MSOP

3271

AD8609AR

AD8609AR

Analog Devices, Inc.

IC GP OPAMP 4 CIRCUIT 14SOIC

995

LT1259IN#PBF

LT1259IN#PBF

Analog Devices, Inc.

IC OPAMP CFA 2 CIRCUIT 14DIP

0

LTC2063IS5#TRPBF

LTC2063IS5#TRPBF

Analog Devices, Inc.

IC OPAMP ZER-DRIFT 1CIR TSOT23-5

0

ADA4841-2YRMZ-RL

ADA4841-2YRMZ-RL

Analog Devices, Inc.

IC OPAMP VFB 2 CIRCUIT 8MSOP

2728

AD8420ARMZ-RL

AD8420ARMZ-RL

Analog Devices, Inc.

INSTRUMENTATION AMPLIFIER, PDSO8

1399

LT6203IDD#TRPBF

LT6203IDD#TRPBF

Analog Devices, Inc.

IC OPAMP GP 2 CIRCUIT 8DFN

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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