Linear - Amplifiers - Instrumentation, OP Amps, Buffer Amps

Image Part Number Description / PDF Quantity Rfq
ASNT7113A-KMC

ASNT7113A-KMC

ADSANTEC

IC SAMPL/HOLD 1 CIRCUIT 24CQFP

0

OP27EZ

OP27EZ

Analog Devices, Inc.

IC OPAMP GP 1 CIRCUIT 8CERDIP

42

UA774BDM

UA774BDM

OPERATIONAL AMPLIFIER

0

LMV358IDDUR

LMV358IDDUR

Texas Instruments

LMV358 DUAL LOW-VOLTAGE RAIL-TO-

370240

HFA7-0005-9

HFA7-0005-9

HIGH SLEW RATE OP AMP

0

EL5174ISZ-T13

EL5174ISZ-T13

Intersil (Renesas Electronics America)

IC OPAMP DIFF 1 CIRCUIT 8SOIC

0

LTC6226HS6#TRMPBF

LTC6226HS6#TRMPBF

Analog Devices, Inc.

PRECISION LOW DRIFT & NOISE HISP

532

AD8519AR

AD8519AR

Analog Devices, Inc.

IC GP OPAMP 1 CIRCUIT 8SOIC

80670

AD8479BRZ

AD8479BRZ

Analog Devices, Inc.

IC OPAMP GP 1 CIRCUIT 8SOIC

174

OPA4345EA/250

OPA4345EA/250

Texas Instruments

OPERATIONAL AMPLIFIER

0

TLV2462AQDREP

TLV2462AQDREP

Texas Instruments

IC OPAMP GP 2 CIRCUIT 8SOIC

0

OPA2317IDGKT

OPA2317IDGKT

Texas Instruments

IC OPAMP GP 2 CIRCUIT 8VSSOP

574

TLE2081IDR

TLE2081IDR

Texas Instruments

TLE2081 HIGH-SPEED JFET-INPUT OP

12113

ADA4940-1ACPZ-RL

ADA4940-1ACPZ-RL

Analog Devices, Inc.

IC OPAMP DIFF 1 CIRCUIT 16LFCSP

0

NJM2749M-TE1

NJM2749M-TE1

New Japan Radio (NJR)

IC OPAMP JFET 2 CIRCUIT 8DMP

0

OP02CZ

OP02CZ

Analog Devices, Inc.

GENERAL PURPOSE OP AMP

263

ADTL084ARUZ

ADTL084ARUZ

Analog Devices, Inc.

IC OPAMP JFET 4 CIRCUIT 14TSSOP

4

AD8475ARMZ-R7

AD8475ARMZ-R7

Analog Devices, Inc.

IC OPAMP DIFF 1 CIRCUIT 10MSOP

775

MCP6V08T-E/SN

MCP6V08T-E/SN

Roving Networks / Microchip Technology

IC OPAMP ZERO-DRIFT 1 CIRC 8SOIC

0

LTC2067HDD#PBF

LTC2067HDD#PBF

Analog Devices, Inc.

IC OPAMP ZERO-DRIFT 2 CIRC 10DFN

41

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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