Linear - Amplifiers - Instrumentation, OP Amps, Buffer Amps

Image Part Number Description / PDF Quantity Rfq
AP4310AUMTR-AG1

AP4310AUMTR-AG1

Zetex Semiconductors (Diodes Inc.)

IC OPAMP GP 2 CIRCUIT 8SOIC

0

AZV321KSTR-G1

AZV321KSTR-G1

Zetex Semiconductors (Diodes Inc.)

IC OPAMP GP 1 CIRCUIT SC70-5

101227

AS324MTR-G1

AS324MTR-G1

Zetex Semiconductors (Diodes Inc.)

IC OPAMP GP 4 CIRCUIT 14SOIC

41

LM2904QTH-13

LM2904QTH-13

Zetex Semiconductors (Diodes Inc.)

IC OPAMP GP 2 CIRCUIT 8TSSOP

165000

LM358S-13

LM358S-13

Zetex Semiconductors (Diodes Inc.)

IC OPAMP GP 2 CIRCUIT 8SOP

3447

AZV358MMTR-E1

AZV358MMTR-E1

Zetex Semiconductors (Diodes Inc.)

IC OPAMP GP 2 CIRCUIT 8MSOP

0

AS321KTR-E1

AS321KTR-E1

Zetex Semiconductors (Diodes Inc.)

IC OPAMP GP 1 CIRCUIT SOT23-5

1877

LM2904AQS-13

LM2904AQS-13

Zetex Semiconductors (Diodes Inc.)

IC OPAMP GP 2 CIRCUIT 8SO

68412500

AS2333S-13

AS2333S-13

Zetex Semiconductors (Diodes Inc.)

OPAMP GENERAL PURPOSE,SO-8,T&R,2

3715

AP4310AUMTR-E1

AP4310AUMTR-E1

Zetex Semiconductors (Diodes Inc.)

IC OPAMP GP 2 CIRCUIT 8SO

0

AP358SL-13

AP358SL-13

Zetex Semiconductors (Diodes Inc.)

IC OPAMP GP 2 CIRCUIT 8SOP

0

ZXFBF04N14TC

ZXFBF04N14TC

Zetex Semiconductors (Diodes Inc.)

IC BUFFER 4 CIRCUIT 14SO

0

AZ4558CP-G1

AZ4558CP-G1

Zetex Semiconductors (Diodes Inc.)

IC OPAMP GP 2 CIRCUIT 8DIP

0

AP4310AMTR-AE1

AP4310AMTR-AE1

Zetex Semiconductors (Diodes Inc.)

IC OPAMP GP 2 CIRCUIT 8SO

0

AS358BGTR-G1

AS358BGTR-G1

Zetex Semiconductors (Diodes Inc.)

IC OPAMP GP 2 CIRCUIT 8TSSOP

0

AS324P-E1

AS324P-E1

Zetex Semiconductors (Diodes Inc.)

IC OPAMP GP 4 CIRCUIT 14DIP

0

AP4306BKTR-G1

AP4306BKTR-G1

Zetex Semiconductors (Diodes Inc.)

IC CURR SENSE 1 CIRCUIT SOT23-6

0

AS358P-G1

AS358P-G1

Zetex Semiconductors (Diodes Inc.)

IC OPAMP GP 2 CIRCUIT 8DIP

0

AP358NG-U

AP358NG-U

Zetex Semiconductors (Diodes Inc.)

IC OPAMP GP 2 CIRCUIT 8DIP

0

AP4313KTR-E1

AP4313KTR-E1

Zetex Semiconductors (Diodes Inc.)

IC CURR SENSE 1 CIRCUIT SOT23-6

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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