Linear - Amplifiers - Instrumentation, OP Amps, Buffer Amps

Image Part Number Description / PDF Quantity Rfq
LM10CN/NOPB

LM10CN/NOPB

Texas Instruments

IC OPAMP GP 1 CIRCUIT 8DIP

2270

AD8042AR

AD8042AR

Analog Devices, Inc.

VIDEO AMPLIFIER, 1 CHANNEL(S), 2

750

LTC6101HVCIS5#TRPBF

LTC6101HVCIS5#TRPBF

Analog Devices, Inc.

IC CURR SENSE 1 CIRCUIT TSOT23-5

2180

MCP6422-E/SN

MCP6422-E/SN

Roving Networks / Microchip Technology

IC OPAMP GP 2 CIRCUIT 8SOIC

34

OPA356AIDBVTG4

OPA356AIDBVTG4

Texas Instruments

IC OPAMP VFB 1 CIRCUIT SOT23-5

0

AD712KN

AD712KN

Analog Devices, Inc.

IC OPAMP JFET 2 CIRCUIT 8DIP

0

LT6204IGN#PBF

LT6204IGN#PBF

Analog Devices, Inc.

IC OPAMP GP 4 CIRCUIT 16SSOP

334

ICL7612BCTV

ICL7612BCTV

Analog Devices, Inc.

IC GP OPAMP 1 CIRCUIT TO99-8

0

LMP2022MM/NOPB

LMP2022MM/NOPB

Texas Instruments

IC OPAMP ZERO-DRIFT 2CIRC 8VSSOP

1994

MAX4185EUB+

MAX4185EUB+

Analog Devices, Inc.

IC CFA 2 CIRCUIT 10UMAX

987

OP275GS-REEL

OP275GS-REEL

Analog Devices, Inc.

IC AUDIO 2 CIRCUIT 8SOIC

2500

AD706ARZ-REEL7

AD706ARZ-REEL7

Analog Devices, Inc.

IC OPAMP GP 2 CIRCUIT 8SOIC

2557

HA1-2539-2

HA1-2539-2

Intersil (Renesas Electronics America)

OPERATIONAL AMPLIFIER

107

TLC080IDGNR

TLC080IDGNR

Texas Instruments

TLC080 SINGLE WIDE-BANDWIDTH HIG

1040

LTC6079IGN#PBF

LTC6079IGN#PBF

Analog Devices, Inc.

IC OPAMP GP 4 CIRCUIT 16SSOP

1384

TSV631AICT

TSV631AICT

STMicroelectronics

IC OPAMP GP 1 CIRCUIT SC70-5

2440

KA324

KA324

IC GP OPAMP 4 CIRCUIT 14DIP

4252

LT6234CS8#TRPBF

LT6234CS8#TRPBF

Analog Devices, Inc.

IC OPAMP GP 2 CIRCUIT 8SO

0

OPA2343UA/2K5G4

OPA2343UA/2K5G4

Texas Instruments

IC OPAMP GP 2 CIRCUIT 8SOIC

0

TSV852AIYST

TSV852AIYST

STMicroelectronics

IC OPAMP GP 2 CIRCUIT 8MINISO

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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