Linear - Amplifiers - Instrumentation, OP Amps, Buffer Amps

Image Part Number Description / PDF Quantity Rfq
ISL28345FBZ-T13

ISL28345FBZ-T13

Intersil (Renesas Electronics America)

IC OPAMP GP 4 CIRCUIT 14SOIC

0

ISL28113FHZ-T7

ISL28113FHZ-T7

Intersil (Renesas Electronics America)

IC OPAMP GP 1 CIRCUIT SOT23-5

0

ISL28210FBZ

ISL28210FBZ

Intersil (Renesas Electronics America)

IC OPAMP JFET 2 CIRCUIT 8SOIC

0

EL8302ISZ-T7

EL8302ISZ-T7

Intersil (Renesas Electronics America)

IC OPAMP VFB 3 CIRCUIT 16SOIC

0

ISL1572IRZ-T7

ISL1572IRZ-T7

Intersil (Renesas Electronics America)

IC OPAMP GP 2 CIRCUIT 16QFN

0

EL5306IUZ-T7

EL5306IUZ-T7

Intersil (Renesas Electronics America)

IC OPAMP GP 3 CIRCUIT 16QSOP

0

ISL28114FEZ-T7

ISL28114FEZ-T7

Intersil (Renesas Electronics America)

IC OPAMP GP 1 CIRCUIT SC70-5

0

CA3140M

CA3140M

Intersil (Renesas Electronics America)

IC GP OPAMP 1 CIRCUIT 8SOIC

9882

CA3130MZ96

CA3130MZ96

Intersil (Renesas Electronics America)

IC OPAMP GP 1 CIRCUIT 8SOIC

0

HFA1412IB

HFA1412IB

Intersil (Renesas Electronics America)

QUAD PROGRAMMABLE GAIN AMPLIFIER

1747

EL5393ACS

EL5393ACS

Intersil (Renesas Electronics America)

VIDEO AMPLIFIER, 3 CHANNEL

300

EL5327CRZ

EL5327CRZ

Intersil (Renesas Electronics America)

IC BUFFER 10 CIRCUIT 24TSSOP

6418

ISL28227FUBZ-T7

ISL28227FUBZ-T7

Intersil (Renesas Electronics America)

IC OPAMP GP 2 CIRCUIT 8MSOP

0

ISL28158FBZ

ISL28158FBZ

Intersil (Renesas Electronics America)

OPERATIONAL AMPLIFIER

334

ICL7612BCPAZ

ICL7612BCPAZ

Intersil (Renesas Electronics America)

IC GP OPAMP 1 CIRCUIT 8DIP

1994

EL2280CS

EL2280CS

Intersil (Renesas Electronics America)

VIDEO AMPLIFIER

5097

EL5410CS

EL5410CS

Intersil (Renesas Electronics America)

IC VOLTAGE FEEDBACK 4CIRC 14SOIC

5440

EL2125CSZ

EL2125CSZ

Intersil (Renesas Electronics America)

IC OPAMP VFB 1 CIRCUIT 8SOIC

3783

HA1-2539-2

HA1-2539-2

Intersil (Renesas Electronics America)

OPERATIONAL AMPLIFIER

107

EL5172IYZ

EL5172IYZ

Intersil (Renesas Electronics America)

IC OPAMP DIFF 1 CIRCUIT 8MSOP

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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