Linear - Amplifiers - Instrumentation, OP Amps, Buffer Amps

Image Part Number Description / PDF Quantity Rfq
TLC2272MDRG4

TLC2272MDRG4

Texas Instruments

IC OPAMP GP 2 CIRCUIT 8SOIC

0

MAX44267AUD+T

MAX44267AUD+T

Maxim Integrated

IC OPAMP GP 2 CIRCUIT 14TSSOP

0

MAX437CPA+

MAX437CPA+

Analog Devices, Inc.

OPERATIONAL AMPLIFIER

3887

BU7421SG-TR

BU7421SG-TR

ROHM Semiconductor

IC CMOS 1 CIRCUIT 5SSOP

5359

AD8066AR-REEL7

AD8066AR-REEL7

Analog Devices, Inc.

IC VOLTAGE FEEDBACK 2 CIRC 8SOIC

2000

OPA177FP

OPA177FP

Texas Instruments

IC OPAMP GP 1 CIRCUIT 8DIP

465

ISL28248FBZ-T7

ISL28248FBZ-T7

Intersil (Renesas Electronics America)

IC OPAMP GP 2 CIRCUIT 8SOIC

0

CA0358AM

CA0358AM

DUAL OPERATIONAL AMPLIFIER

1621

VCA822IDGST

VCA822IDGST

Texas Instruments

WIDEBAND, GREATER THAN 40DB GAIN

12089

AD8011AR

AD8011AR

Analog Devices, Inc.

IC CFA 1 CIRCUIT 8SOIC

171436

THS4521IDGKT

THS4521IDGKT

Texas Instruments

IC OPAMP DIFF 1 CIRCUIT 8VSSOP

343410000

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

TLV2470CDBVR

TLV2470CDBVR

Texas Instruments

TLV2470 SINGLE LOW-POWER RAIL-TO

0

MCP6001T-I/LT

MCP6001T-I/LT

Roving Networks / Microchip Technology

IC OPAMP GP 1 CIRCUIT SC70-5

0

MC33078DT

MC33078DT

STMicroelectronics

IC OPAMP GP 2 CIRCUIT 8SO

10708

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

OPA374AIDBVTG4

OPA374AIDBVTG4

Texas Instruments

IC OPAMP GP 1 CIRCUIT SOT23-5

0

LMV321M5X/HALF

LMV321M5X/HALF

OPERATIONAL AMPLIFIER

8500

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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