Linear - Amplifiers - Instrumentation, OP Amps, Buffer Amps

Image Part Number Description / PDF Quantity Rfq
OP284ESZ-REEL7

OP284ESZ-REEL7

Analog Devices, Inc.

IC OPAMP GP 2 CIRCUIT 8SOIC

189

HFA7-0005/883

HFA7-0005/883

HIGH SLEW RATE OP AMP

616

OPA197IDBVR

OPA197IDBVR

Texas Instruments

IC OPAMP GP 1 CIRCUIT SOT23-5

3000

AD8041ARZ-REEL7

AD8041ARZ-REEL7

Analog Devices, Inc.

IC OPAMP VFB 1 CIRCUIT 8SOIC

2145

LM7372IMA/NOPB

LM7372IMA/NOPB

Texas Instruments

IC OPAMP VFB 2 CIRCUIT 16SOIC

889

LT1819CMS8#TRPBF

LT1819CMS8#TRPBF

Analog Devices, Inc.

IC OPAMP VFB 2 CIRCUIT 8MSOP

0

LOG101AIDG4

LOG101AIDG4

Texas Instruments

IC OPAMP LOGARITHMIC 1CIRC 8SOIC

0

AD8027ARTZ-R2

AD8027ARTZ-R2

Analog Devices, Inc.

IC OPAMP VFB 1 CIRCUIT SOT23-6

1139

LT1079ISW#TRPBF

LT1079ISW#TRPBF

Analog Devices, Inc.

IC OPAMP GP 4 CIRCUIT 16SO

970

SHC5320SH

SHC5320SH

Burr-Brown (Texas Instruments)

IC SAMPL/HOLD 1 CIRCUIT 14CDIP

5587

LT1884ACS8#TRPBF

LT1884ACS8#TRPBF

Analog Devices, Inc.

IC OPAMP GP 2 CIRCUIT 8SO

0

LT1078SW#PBF

LT1078SW#PBF

Analog Devices, Inc.

IC OPAMP GP 2 CIRCUIT 16SO

0

HA7-2841/883

HA7-2841/883

VIDEO OPERATIONAL AMPLIFIER

559

MCP6V28T-E/MNY

MCP6V28T-E/MNY

Roving Networks / Microchip Technology

IC OPAMP ZERO-DRIFT 1 CIRC 8TDFN

0

LT6013IS8#PBF

LT6013IS8#PBF

Analog Devices, Inc.

IC OPAMP GP 1 CIRCUIT 8SO

53

LM224DR

LM224DR

Texas Instruments

LM224 QUAD STANDARD, INDUSTRIAL-

23150

OPA890IDG4

OPA890IDG4

Texas Instruments

IC OPAMP VFB 1 CIRCUIT 8SOIC

0

AD8538ARZ

AD8538ARZ

Analog Devices, Inc.

IC OPAMP ZERO-DRIFT 1 CIRC 8SOIC

62

MC3403NS

MC3403NS

Texas Instruments

OPERATIONAL AMPLIFIER

2500

LM2904AVQDRG4

LM2904AVQDRG4

Texas Instruments

IC OPAMP GP 2 CIRCUIT 8SOIC

4139

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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