Linear - Amplifiers - Instrumentation, OP Amps, Buffer Amps

Image Part Number Description / PDF Quantity Rfq
LTC6256CTS8#TRMPBF

LTC6256CTS8#TRMPBF

Analog Devices, Inc.

IC OPAMP GP 2 CIRCUIT TSOT23-8

73

TS1874AIYPT

TS1874AIYPT

STMicroelectronics

IC OPAMP GP 4 CIRCUIT 14TSSOP

0

TLC2272AMDG4

TLC2272AMDG4

Texas Instruments

IC OPAMP GP 2 CIRCUIT 8SOIC

383

INA827AIDGKR

INA827AIDGKR

Texas Instruments

IC INST AMP 1 CIRCUIT 8VSSOP

1593

AD706JRZ-REEL

AD706JRZ-REEL

Analog Devices, Inc.

IC OPAMP GP 2 CIRCUIT 8SOIC

1960

MC33071ADG

MC33071ADG

IC GP OPAMP 1 CIRCUIT 8SOIC

2981

AD8028ARM-REEL

AD8028ARM-REEL

Analog Devices, Inc.

IC VOLTAGE FEEDBACK 2CIRC 10MSOP

22980

OPA333AIDBVT

OPA333AIDBVT

Texas Instruments

IC OPAMP ZER-DRIFT 1CIRC SOT23-5

371410000

AD8652ARZ-REEL

AD8652ARZ-REEL

Analog Devices, Inc.

IC OPAMP VFB 2 CIRCUIT 8SOIC

0

CA5130AM

CA5130AM

OP AMP WITH MOSFET IN/OUT

3584

TLV2780AIDR

TLV2780AIDR

Texas Instruments

OPERATIONAL AMPLIFIER

4353

OPA364IDR

OPA364IDR

Texas Instruments

IC OPAMP GP 1 CIRCUIT 8SOIC

0

OPA2625IDGSR

OPA2625IDGSR

Texas Instruments

IC OPAMP GP 2 CIRCUIT 10VSSOP

0

LM2904Q2T

LM2904Q2T

STMicroelectronics

IC OPAMP GP 2 CIRCUIT 8DFN

31298

AD8230YRZ-REEL7

AD8230YRZ-REEL7

Analog Devices, Inc.

IC OPAMP ZERO-DRIFT 1 CIRC 8SOIC

1868

LT6376HMS#TRPBF

LT6376HMS#TRPBF

Analog Devices, Inc.

IC OPAMP GP 1 CIRCUIT 16MSOP

0

HA4-5135/883

HA4-5135/883

IC GP OPAMP 1 CIRCUIT 20CLCC

86

AD8330ARQ-REEL

AD8330ARQ-REEL

Analog Devices, Inc.

IC VARIABLE GAIN 1 CIRC 16QSOP

22500

OPA244UA/2K5

OPA244UA/2K5

Texas Instruments

IC OPAMP GP 1 CIRCUIT 8SOIC

2102

MCP631T-E/MNY

MCP631T-E/MNY

Roving Networks / Microchip Technology

IC OPAMP GP 1 CIRCUIT 8TDFN

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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