Linear - Amplifiers - Instrumentation, OP Amps, Buffer Amps

Image Part Number Description / PDF Quantity Rfq
EL2125CSZ-T13

EL2125CSZ-T13

Intersil (Renesas Electronics America)

IC OPAMP VFB 1 CIRCUIT 8SOIC

0

EL5203ISZ-T7

EL5203ISZ-T7

Intersil (Renesas Electronics America)

IC OPAMP VFB 2 CIRCUIT 8SOIC

0

EL5104IWZ-T7

EL5104IWZ-T7

Intersil (Renesas Electronics America)

IC OPAMP VFB 1 CIRCUIT SOT23-6

0

EL5105IWZ-T7A

EL5105IWZ-T7A

Intersil (Renesas Electronics America)

IC OPAMP VFB 1 CIRCUIT SOT23-5

0

CA3420E

CA3420E

Intersil (Renesas Electronics America)

IC GP OPAMP 1 CIRCUIT 8DIP

4781

ICL7650SCBA-1Z

ICL7650SCBA-1Z

Intersil (Renesas Electronics America)

IC OPAMP ZERO-DRIFT 1 CIRC 8SOIC

0

ISL28227FRTZ-T13

ISL28227FRTZ-T13

Intersil (Renesas Electronics America)

IC OPAMP GP 2 CIRCUIT 8TDFN

0

EL5165IWZ-T7

EL5165IWZ-T7

Intersil (Renesas Electronics America)

IC OPAMP CFA 1 CIRCUIT SOT23-5

0

EL5175IYZ-T7

EL5175IYZ-T7

Intersil (Renesas Electronics America)

IC OPAMP DIFF 1 CIRCUIT 8MSOP

133

ISL28217FRTZ-T13

ISL28217FRTZ-T13

Intersil (Renesas Electronics America)

IC OPAMP GP 2 CIRCUIT 8TDFN

0

EL8170FSZ-T7A

EL8170FSZ-T7A

Intersil (Renesas Electronics America)

IC INST AMP 1 CIRCUIT 8SOIC

0

EL5210CS

EL5210CS

Intersil (Renesas Electronics America)

IC VOLTAGE FEEDBACK 2 CIRC 8SOIC

0

HFA1112IB

HFA1112IB

Intersil (Renesas Electronics America)

BUFFER AMPLIFIER, BIPOLAR, PDSO8

0

EL5263IS-T7

EL5263IS-T7

Intersil (Renesas Electronics America)

IC CFA 2 CIRCUIT 8SOIC

10700

ISL28286FUZ

ISL28286FUZ

Intersil (Renesas Electronics America)

IC GP OPAMP 2 CIRCUIT 10MSOP

676

ISL28207FRTZ

ISL28207FRTZ

Intersil (Renesas Electronics America)

IC OPAMP GP 2 CIRCUIT 8TDFN

0

EL5324IREZ-T7

EL5324IREZ-T7

Intersil (Renesas Electronics America)

IC BUFFER 10 CIRCUIT 28HTSSOP

0

EL5410CRZ

EL5410CRZ

Intersil (Renesas Electronics America)

IC VOLT FEEDBACK 4CIRC 14TSSOP

0

HFA1130IBZ

HFA1130IBZ

Intersil (Renesas Electronics America)

IC OPAMP CFA 1 CIRCUIT 8SOIC

0

EL8201IS

EL8201IS

Intersil (Renesas Electronics America)

IC GP OPAMP 2 CIRCUIT 8SOIC

33410

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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