Linear - Amplifiers - Instrumentation, OP Amps, Buffer Amps

Image Part Number Description / PDF Quantity Rfq
LM833NG

LM833NG

Sanyo Semiconductor/ON Semiconductor

IC AUDIO 2 CIRCUIT 8DIP

0

LM324ANG

LM324ANG

Sanyo Semiconductor/ON Semiconductor

IC OPAMP GP 4 CIRCUIT 14DIP

0

NE5534N

NE5534N

Sanyo Semiconductor/ON Semiconductor

IC OPAMP GP 1 CIRCUIT 8DIP

0

MC34071PG

MC34071PG

Sanyo Semiconductor/ON Semiconductor

IC OPAMP GP 1 CIRCUIT 8DIP

0

MC33502DR2G

MC33502DR2G

Sanyo Semiconductor/ON Semiconductor

IC OPAMP GP 2 CIRCUIT 8SOIC

0

LMV321SQ3T1G

LMV321SQ3T1G

Sanyo Semiconductor/ON Semiconductor

IC OPAMP GP 1 CIRCUIT SC88A

0

NCV33272ADR2

NCV33272ADR2

Sanyo Semiconductor/ON Semiconductor

IC OPAMP GP 2 CIRCUIT 8SOIC

0

NCS7101SN2T1

NCS7101SN2T1

Sanyo Semiconductor/ON Semiconductor

IC OPAMP GP 1 CIRCUIT 5TSOP

0

NCS2530DTBR2

NCS2530DTBR2

Sanyo Semiconductor/ON Semiconductor

IC OPAMP CFA 3 CIRCUIT 16TSSOP

0

LM1458CMX

LM1458CMX

Sanyo Semiconductor/ON Semiconductor

IC OPAMP GP 2 CIRCUIT 8SOIC

0

LMV321SN3T21G

LMV321SN3T21G

Sanyo Semiconductor/ON Semiconductor

IC OP AMP SINGLE SC70-5

0

MC33172PG

MC33172PG

Sanyo Semiconductor/ON Semiconductor

IC OPAMP GP 2 CIRCUIT 8DIP

0

TCA0372DWG

TCA0372DWG

Sanyo Semiconductor/ON Semiconductor

IC OPAMP GP 2 CIRCUIT 16SOIC

0

MC34072ADR2

MC34072ADR2

Sanyo Semiconductor/ON Semiconductor

IC OPAMP GP 2 CIRCUIT 8SOIC

0

TCA0372DWR2

TCA0372DWR2

Sanyo Semiconductor/ON Semiconductor

IC OPAMP GP 2 CIRCUIT 16SOIC

0

MC33179PG

MC33179PG

Sanyo Semiconductor/ON Semiconductor

IC OPAMP GP 4 CIRCUIT 14DIP

0

KA3403D

KA3403D

Sanyo Semiconductor/ON Semiconductor

IC OPAMP GP 4 CIRCUIT 14SOIC

0

LM2904VDMR2

LM2904VDMR2

Sanyo Semiconductor/ON Semiconductor

IC OPAMP GP 2 CIRCUIT MICRO8

0

KF351

KF351

Sanyo Semiconductor/ON Semiconductor

IC OPAMP JFET 1 CIRCUIT 8DIP

0

NCS2001SQ2T2

NCS2001SQ2T2

Sanyo Semiconductor/ON Semiconductor

IC OPAMP GP 1 CIRCUIT SC88A

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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