Linear - Amplifiers - Instrumentation, OP Amps, Buffer Amps

Image Part Number Description / PDF Quantity Rfq
OPA642N/3K

OPA642N/3K

Texas Instruments

IC VOLT FEEDBACK 1CIRC SOT23-5

2760

TLC2272ACDG4

TLC2272ACDG4

Texas Instruments

IC OPAMP GP 2 CIRCUIT 8SOIC

0

OPA314AIDBVR

OPA314AIDBVR

Texas Instruments

IC OPAMP GP 1 CIRCUIT SOT23-5

604

TL074ACD

TL074ACD

Texas Instruments

IC OPAMP JFET 4 CIRCUIT 14SOIC

0

LME49720NA/NOPB

LME49720NA/NOPB

Texas Instruments

IC AUDIO 2 CIRCUIT 8DIP

1239

TLC2272IDR

TLC2272IDR

Texas Instruments

IC OPAMP GP 2 CIRCUIT 8SOIC

0

INA101AG

INA101AG

Texas Instruments

IC INST AMP 1 CIRCUIT 14CDIP

49

LMC662CM/NOPB

LMC662CM/NOPB

Texas Instruments

IC OPAMP GP 2 CIRCUIT 8SOIC

42309975

OPA2369AIDGKR

OPA2369AIDGKR

Texas Instruments

IC OPAMP GP 2 CIRCUIT 8VSSOP

287

TLV2324IPWR

TLV2324IPWR

Texas Instruments

TLV2324 QUAD LOW-VOLTAGE MICROPO

97000

TLC2262CPWG4

TLC2262CPWG4

Texas Instruments

IC OPAMP GP 2 CIRCUIT 8TSSOP

0

TL974IDR

TL974IDR

Texas Instruments

IC OPAMP GP 4 CIRCUIT 14SOIC

2892

LMH6643QMMX/NOPB

LMH6643QMMX/NOPB

Texas Instruments

IC OPAMP VFB 2 CIRCUIT 8VSSOP

0

LM224KN

LM224KN

Texas Instruments

LM224K QUAD STANDARD, IMPROVED E

9363

OPA227P

OPA227P

Texas Instruments

IC OPAMP GP 1 CIRCUIT 8DIP

527

INA129UA/2K5E4

INA129UA/2K5E4

Texas Instruments

IC INST AMP 1 CIRCUIT 8SOIC

0

OPA376AIDCKTG4

OPA376AIDCKTG4

Texas Instruments

IC OPAMP GP 1 CIRCUIT SC70-5

0

PGA204AU

PGA204AU

Texas Instruments

IC INST AMP 1 CIRCUIT 16SOIC

1896000

TL34072AP

TL34072AP

Texas Instruments

OPERATIONAL AMPLIFIER

0

OPA2172IDGK

OPA2172IDGK

Texas Instruments

IC OPAMP GP 2 CIRCUIT 8VSSOP

2298480

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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