Linear - Amplifiers - Instrumentation, OP Amps, Buffer Amps

Image Part Number Description / PDF Quantity Rfq
ISL28006FH20Z-T7A

ISL28006FH20Z-T7A

Intersil (Renesas Electronics America)

IC CURR SENSE 1 CIRCUIT SOT23-5

6500

CA3260AEZ

CA3260AEZ

Intersil (Renesas Electronics America)

IC OPAMP GP 2 CIRCUIT 8DIP

0

EL5167IWZ-T7A

EL5167IWZ-T7A

Intersil (Renesas Electronics America)

IC OPAMP CFA 1 CIRCUIT SOT23-5

108148750

ISL28006FH100Z-T7A

ISL28006FH100Z-T7A

Intersil (Renesas Electronics America)

IC CURR SENSE 1 CIRCUIT SOT23-5

209

ISL28005FH20Z-T7

ISL28005FH20Z-T7

Intersil (Renesas Electronics America)

IC CURR SENSE 1 CIRCUIT SOT23-5

0

ISL28214FBZ-T13

ISL28214FBZ-T13

Intersil (Renesas Electronics America)

IC OPAMP GP 2 CIRCUIT 8SOIC

0

EL5111TIWTZ-T7

EL5111TIWTZ-T7

Intersil (Renesas Electronics America)

IC OPAMP VFB 1 CIRCUIT TSOT23-5

0

ISL28230CBZ-T7A

ISL28230CBZ-T7A

Intersil (Renesas Electronics America)

IC OPAMP GP 2 CIRCUIT 8SOIC

337

EL5120IYE

EL5120IYE

Intersil (Renesas Electronics America)

IC VOLT FEEDBACK 1CIRC 8HMSOP

25243

LM2904N

LM2904N

Intersil (Renesas Electronics America)

OPERATIONAL AMPLIFIER

13531

EL5362IUZ-T13

EL5362IUZ-T13

Intersil (Renesas Electronics America)

IC OPAMP CFA 3 CIRCUIT 16QSOP

0

ISL28194FHZ-T7A

ISL28194FHZ-T7A

Intersil (Renesas Electronics America)

IC OPAMP GP 1 CIRCUIT SOT23-6

230

EL5165IW-T7

EL5165IW-T7

Intersil (Renesas Electronics America)

IC CFA 1 CIRCUIT SOT23-5

33000

EL2125CS

EL2125CS

Intersil (Renesas Electronics America)

IC VOLTAGE FEEDBACK 1 CIRC 8SOIC

1887

ISL28430FVZ-T7

ISL28430FVZ-T7

Intersil (Renesas Electronics America)

IC OPAMP GP 4 CIRCUIT 14TSSOP

0

ISL28214FBZ

ISL28214FBZ

Intersil (Renesas Electronics America)

IC OPAMP GP 2 CIRCUIT 8SOIC

38897

CA3240AE

CA3240AE

Intersil (Renesas Electronics America)

IC GP OPAMP 2 CIRCUIT 8DIP

3381

EL5171ISZ-T7A

EL5171ISZ-T7A

Intersil (Renesas Electronics America)

IC OPAMP DIFF 1 CIRCUIT 8SOIC

0

EL5364IUZ

EL5364IUZ

Intersil (Renesas Electronics America)

IC OPAMP CFA 3 CIRCUIT 16QSOP

0

ICL7650SCBA-1ZT

ICL7650SCBA-1ZT

Intersil (Renesas Electronics America)

IC OPAMP ZERO-DRIFT 1 CIRC 8SOIC

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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