Linear - Amplifiers - Instrumentation, OP Amps, Buffer Amps

Image Part Number Description / PDF Quantity Rfq
MAX4322ESA+T

MAX4322ESA+T

Maxim Integrated

IC OPAMP GP 1 CIRCUIT 8SOIC

0

HA3-2840-9

HA3-2840-9

WIDEBAND OPERATIONAL AMPLIFIER

937

INA103KU/1K

INA103KU/1K

Texas Instruments

IC INST AMP 1 CIRCUIT 16SOIC

0

EL5172IYZ

EL5172IYZ

Intersil (Renesas Electronics America)

IC OPAMP DIFF 1 CIRCUIT 8MSOP

0

MCP661T-E/SN

MCP661T-E/SN

Roving Networks / Microchip Technology

IC OPAMP GP 1 CIRCUIT 8SOIC

0

LMV932MAX

LMV932MAX

IC GP OPAMP 2 CIRCUIT 8SOIC

43904

UC3178QP

UC3178QP

Texas Instruments

IC POWER AMP 2 CIRCUIT 28PLCC

7801

ISL55004IBZ-T13

ISL55004IBZ-T13

Intersil (Renesas Electronics America)

IC OPAMP VFB 4 CIRCUIT 14SOIC

0

MCP625-E/MF

MCP625-E/MF

Roving Networks / Microchip Technology

IC OPAMP GP 2 CIRCUIT 10DFN

338

TLV2470CDR

TLV2470CDR

Texas Instruments

TLV2470 SINGLE LOW-POWER RAIL-TO

42350

OPA2277AIDRMT

OPA2277AIDRMT

Texas Instruments

IC OPAMP GP 2 CIRCUIT 8VSON

2024

LT1639HS#TRPBF

LT1639HS#TRPBF

Analog Devices, Inc.

IC OPAMP GP 4 CIRCUIT 14SO

0

AD620BRZ-R7

AD620BRZ-R7

Analog Devices, Inc.

IC INST AMP 1 CIRCUIT 8SOIC

5140

TLV2772AQDRQ1

TLV2772AQDRQ1

Texas Instruments

TLV2772A-Q1 DUAL AUTOMOTIVE, IMP

34300

INA2180A4IDGKT

INA2180A4IDGKT

Texas Instruments

IC CURR SENSE 2 CIRCUIT 8VSSOP

1016

LT1357CN8#PBF

LT1357CN8#PBF

Analog Devices, Inc.

IC OPAMP VFB 1 CIRCUIT 8DIP

302

CA6078T

CA6078T

OPERATIONAL AMPLIFIER

185

TLC2272ACPWR

TLC2272ACPWR

Texas Instruments

IC OPAMP GP 2 CIRCUIT 8TSSOP

59036000

ISL28633FVZ-T13

ISL28633FVZ-T13

Intersil (Renesas Electronics America)

IC OPAMP ZER-DRIFT 1CIRC 14TSSOP

0

EL5364IS-T7

EL5364IS-T7

IC CFA 3 CIRCUIT 16SOIC

26000

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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