Linear - Amplifiers - Instrumentation, OP Amps, Buffer Amps

Image Part Number Description / PDF Quantity Rfq
ICL7621BESA+

ICL7621BESA+

Maxim Integrated

IC OPAMP GP 2 CIRCUIT 8SOIC

0

MAX4483ASD+T

MAX4483ASD+T

Maxim Integrated

IC OPAMP GP 4 CIRCUIT 14SOIC

0

MAX492CSA+

MAX492CSA+

Maxim Integrated

IC OPAMP GP 2 CIRCUIT 8SOIC

132911000

MAX44243AUD+T

MAX44243AUD+T

Maxim Integrated

IC OPAMP GP 4 CIRCUIT 14TSSOP

0

ICL7642BCPD+

ICL7642BCPD+

Maxim Integrated

IC OPAMP GP 4 CIRCUIT 14DIP

2131450

MAX494EPD+

MAX494EPD+

Maxim Integrated

IC OPAMP GP 4 CIRCUIT 14DIP

200125

MAX4216EUA+

MAX4216EUA+

Maxim Integrated

IC OPAMP VFB 2 CIRCUIT 8UMAX

6300

MAX40658ETA+T

MAX40658ETA+T

Maxim Integrated

IC OPAMP TRANSIMP 1 CIRC 8TDFN

5882

MAX9929FAUA+T

MAX9929FAUA+T

Maxim Integrated

IC CURR SENSE 1 CIRCUIT 8UMAX

8347

MAX44261AXT+T

MAX44261AXT+T

Maxim Integrated

IC OPAMP GP 1 CIRCUIT SC70-6

30000

MAX4257ESA/V+

MAX4257ESA/V+

Maxim Integrated

UCSP, SINGLE-SUPPLY, LOW-NOISE,

300

MAX9919FASA+

MAX9919FASA+

Maxim Integrated

IC CURR SENSE 1 CIRCUIT 8SOIC

8573500

MAX414ESD+

MAX414ESD+

Maxim Integrated

IC OPAMP GP 4 CIRCUIT 14SOIC

714600

MAX4252ESA+

MAX4252ESA+

Maxim Integrated

IC OPAMP GP 2 CIRCUIT 8SOIC

97

MAX40006ANT+T

MAX40006ANT+T

Maxim Integrated

IC CMOS 1 CIRCUIT 6WLP

162500

MAX4234AUD+

MAX4234AUD+

Maxim Integrated

IC OPAMP GP 4 CIRCUIT 14TSSOP

508384

MAX4201EUK+T

MAX4201EUK+T

Maxim Integrated

IC BUFFER 1 CIRCUIT SOT23-5

284910000

MAX4322ESA+

MAX4322ESA+

Maxim Integrated

IC OPAMP GP 1 CIRCUIT 8SOIC

1683400

MAX4219EEE+

MAX4219EEE+

Maxim Integrated

IC BUFFER 3 CIRCUIT 16QSOP

3481700

MAX4383EUD+T

MAX4383EUD+T

Maxim Integrated

IC OPAMP VFB 4 CIRCUIT 14TSSOP

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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