Linear - Amplifiers - Instrumentation, OP Amps, Buffer Amps

Image Part Number Description / PDF Quantity Rfq
HA5025IB

HA5025IB

Intersil (Renesas Electronics America)

QUAD VIDEO CURRENT FEEDBACK AMP

22479

ICL7621BCPA

ICL7621BCPA

Intersil (Renesas Electronics America)

IC GP OPAMP 2 CIRCUIT 8DIP

236

EL5420CRZ-T7A

EL5420CRZ-T7A

Intersil (Renesas Electronics America)

IC OPAMP VFB 4 CIRCUIT 14TSSOP

0

ISL28236FBZ-T7A

ISL28236FBZ-T7A

Intersil (Renesas Electronics America)

IC OPAMP GP 2 CIRCUIT 8SOIC

0

EL5375IUZ-T7

EL5375IUZ-T7

Intersil (Renesas Electronics America)

IC OPAMP DIFF 3 CIRCUIT 24QSOP

2202

HA3-2525-5

HA3-2525-5

Intersil (Renesas Electronics America)

IC GP OPAMP 1 CIRCUIT 8DIP

0

HFA1135IB

HFA1135IB

Intersil (Renesas Electronics America)

VIDEO PREAMPLIFIER

2304

5962-9306301MCA

5962-9306301MCA

Intersil (Renesas Electronics America)

SAMPLE AND HOLD CIRCUIT

146

ISL24021IRT065Z-T13

ISL24021IRT065Z-T13

Intersil (Renesas Electronics America)

IC OPAMP VFB 1 CIRCUIT 8TDFN

0

EL5263IYZ-T13

EL5263IYZ-T13

Intersil (Renesas Electronics America)

IC OPAMP CFA 2 CIRCUIT 8MSOP

0

ISL28117FUBZ-T7A

ISL28117FUBZ-T7A

Intersil (Renesas Electronics America)

IC OPAMP GP 1 CIRCUIT 8MSOP

0

EL8172FSZ

EL8172FSZ

Intersil (Renesas Electronics America)

IC INST AMP 1 CIRCUIT 8SOIC

212

ISL28218FUZ-T7A

ISL28218FUZ-T7A

Intersil (Renesas Electronics America)

IC OPAMP GP 2 CIRCUIT 8MSOP

0

ISL28413FBZ-T7

ISL28413FBZ-T7

Intersil (Renesas Electronics America)

IC OPAMP GP 4 CIRCUIT 14SOIC

0

ISL28534FVZ-T13

ISL28534FVZ-T13

Intersil (Renesas Electronics America)

IC OPAMP ZER-DRIFT 1CIRC 14TSSOP

0

ISL28227FRTBZ

ISL28227FRTBZ

Intersil (Renesas Electronics America)

IC OPAMP GP 2 CIRCUIT 8TDFN

0

ISL28136FHZ-T7A

ISL28136FHZ-T7A

Intersil (Renesas Electronics America)

IC OPAMP GP 1 CIRCUIT SOT23-6

13

EL5106IWZ-T7

EL5106IWZ-T7

Intersil (Renesas Electronics America)

IC OPAMP GP 1 CIRCUIT SOT23-6

24000

EL5263ISZ-T13

EL5263ISZ-T13

Intersil (Renesas Electronics America)

IC OPAMP CFA 2 CIRCUIT 8SOIC

0

ISL28291FRUZ-T7

ISL28291FRUZ-T7

Intersil (Renesas Electronics America)

IC OPAMP VFB 2 CIRCUIT 10UTQFN

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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