Linear - Amplifiers - Instrumentation, OP Amps, Buffer Amps

Image Part Number Description / PDF Quantity Rfq
MCP6424T-E/SL

MCP6424T-E/SL

Roving Networks / Microchip Technology

IC OPAMP GP 4 CIRCUIT 14SOIC

1296

5962-9086801MXC

5962-9086801MXC

Analog Devices, Inc.

OP AMP (AD9617SZ/883)

197

AD602JNZ

AD602JNZ

Analog Devices, Inc.

IC VARIABLE GAIN 2 CIRCUIT 16DIP

2820

LTC6101HVAHMS8#TRPBF

LTC6101HVAHMS8#TRPBF

Analog Devices, Inc.

IC CURR SENSE 1 CIRCUIT 8MSOP

0

LMV852MM/NOPB

LMV852MM/NOPB

Texas Instruments

IC OPAMP GP 2 CIRCUIT 8VSSOP

1373

LT1997HMS-1#TRPBF

LT1997HMS-1#TRPBF

Analog Devices, Inc.

IC CURR SENSE 1 CIRCUIT 16MSOP

0

TSV612AIST

TSV612AIST

STMicroelectronics

IC OPAMP GP 2 CIRCUIT 8MINISO

4140

HCPL-7840-000E

HCPL-7840-000E

Broadcom

IC OPAMP ISOLATION 1 CIRC 8DIP

918

LMH6672MA/NOPB

LMH6672MA/NOPB

Texas Instruments

IC OPAMP VFB 2 CIRCUIT 8SOIC

1289975

LMV321Q1M5/NOPB

LMV321Q1M5/NOPB

Texas Instruments

IC OPAMP GP 1 CIRCUIT SOT23-5

396

LMC6492BEM/NOPB

LMC6492BEM/NOPB

Texas Instruments

IC OPAMP GP 2 CIRCUIT 8SOIC

643

OP484FS-REEL

OP484FS-REEL

Analog Devices, Inc.

IC GP OPAMP 4 CIRCUIT 14SOIC

28065

OPA2134UA/2K5G4

OPA2134UA/2K5G4

Texas Instruments

IC AUDIO 2 CIRCUIT 8SOIC

0

OPA4345EA/2K5

OPA4345EA/2K5

Texas Instruments

OPERATIONAL AMPLIFIER

2500

TLC083CDR

TLC083CDR

Texas Instruments

TLC083 DUAL WIDE BANDWIDTH HIGH

57500

HFA1102IB

HFA1102IB

CURRENT FEEDBACK AMPLIFIER

1000

AD8542AR

AD8542AR

Analog Devices, Inc.

IC GP OPAMP 2 CIRCUIT 8SOIC

2344

THS7530PWPR

THS7530PWPR

Texas Instruments

THS7530 FULLY DIFFERENTIAL, CONT

57215

LMC6044AIMX/NOPB

LMC6044AIMX/NOPB

Texas Instruments

LMC6044 CMOS QUAD MICROPOWER OPE

250

THS4215DRB

THS4215DRB

Texas Instruments

VIDEO AMPLIFIER

1089

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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