Linear - Amplifiers - Instrumentation, OP Amps, Buffer Amps

Image Part Number Description / PDF Quantity Rfq
ISL55210IRTZ-T7A

ISL55210IRTZ-T7A

Intersil (Renesas Electronics America)

IC OPAMP DIFF 1 CIRCUIT 16QFN

560

EL2270CS-T7

EL2270CS-T7

Intersil (Renesas Electronics America)

VIDEO AMPLIFIER

27568

ISL28208FRTZ-T13

ISL28208FRTZ-T13

Intersil (Renesas Electronics America)

IC OPAMP GP 2 CIRCUIT 8TDFN

0

ISL28208FUZ-T13

ISL28208FUZ-T13

Intersil (Renesas Electronics America)

IC OPAMP GP 2 CIRCUIT 8MSOP

0

ISL28191FHZ-T7

ISL28191FHZ-T7

Intersil (Renesas Electronics America)

IC OPAMP VFB 1 CIRCUIT SOT23-6

240633000

ISL28218FBZ-T7A

ISL28218FBZ-T7A

Intersil (Renesas Electronics America)

IC OPAMP GP 2 CIRCUIT 8SOIC

321

ISL28271FAZ

ISL28271FAZ

Intersil (Renesas Electronics America)

IC INST AMP 2 CIRCUIT 16QSOP

31476

HFA1110IB

HFA1110IB

Intersil (Renesas Electronics America)

IC BUFFER 1 CIRCUIT 8SOIC

2549

ISL28108FBZ-T7

ISL28108FBZ-T7

Intersil (Renesas Electronics America)

IC OPAMP GP 1 CIRCUIT 8SOIC

0

ISL28417FBBZ

ISL28417FBBZ

Intersil (Renesas Electronics America)

IC OPAMP GP 4 CIRCUIT 14SOIC

0

EL5166IW-T7A

EL5166IW-T7A

Intersil (Renesas Electronics America)

IC CFA 1 CIRCUIT SOT23-6

93000

ISL28207FUZ-T7A

ISL28207FUZ-T7A

Intersil (Renesas Electronics America)

IC OPAMP GP 2 CIRCUIT 8MSOP

28

ISL28113FEZ-T7

ISL28113FEZ-T7

Intersil (Renesas Electronics America)

IC OPAMP GP 1 CIRCUIT SC70-5

0

ICL7612DCPA

ICL7612DCPA

Intersil (Renesas Electronics America)

IC GP OPAMP 1 CIRCUIT 8DIP

0

EL5166ISZ-T13

EL5166ISZ-T13

Intersil (Renesas Electronics America)

IC OPAMP CFA 1 CIRCUIT 8SOIC

0

ISL28278FAZ-TZ

ISL28278FAZ-TZ

Intersil (Renesas Electronics America)

DUAL OPERATIONAL AMPLIFIER

1000

ISL1571IRZ

ISL1571IRZ

Intersil (Renesas Electronics America)

IC OPAMP PWR 250MHZ DUAL 16QFN

0

5962-87784012A

5962-87784012A

Intersil (Renesas Electronics America)

OPERATIONAL AMPLIFIER

0

ISL28108FRTZ

ISL28108FRTZ

Intersil (Renesas Electronics America)

IC OPAMP GP 1 CIRCUIT 8TDFN

0

ISL1571IRZ-T7

ISL1571IRZ-T7

Intersil (Renesas Electronics America)

IC OPAMP PWR 250MHZ DUAL 16QFN

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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