Linear - Amplifiers - Instrumentation, OP Amps, Buffer Amps

Image Part Number Description / PDF Quantity Rfq
MAX4323ESA+T

MAX4323ESA+T

Maxim Integrated

IC OPAMP GP 1 CIRCUIT 8SOIC

5000

DS1843D+TRL

DS1843D+TRL

Maxim Integrated

IC OPAMP SAMPL/HOLD 1 CIRC 8UDFN

690

MAX4198EUA+

MAX4198EUA+

Maxim Integrated

IC OPAMP DIFF 1 CIRCUIT 8UMAX

2228800

MAX4289EUT+T

MAX4289EUT+T

Maxim Integrated

IC OPAMP GP 1 CIRCUIT SOT23-6

214

MAX4331EUA+

MAX4331EUA+

Maxim Integrated

IC OPAMP GP 1 CIRCUIT 8UMAX

85

MAX4041ESA+

MAX4041ESA+

Maxim Integrated

IC OPAMP GP 1 CIRCUIT 8SOIC

3081800

MAX4038EBL+T

MAX4038EBL+T

Maxim Integrated

IC OPAMP GP 2 CIRCUIT 9UCSP

456617500

MAX409BESA+T

MAX409BESA+T

Maxim Integrated

IC OPAMP GP 1 CIRCUIT 8SOIC

0

MAX4257EUA+

MAX4257EUA+

Maxim Integrated

IC OPAMP GP 2 CIRCUIT 8UMAX

368

MAX4037EUT+T

MAX4037EUT+T

Maxim Integrated

IC OPAMP GP 1 CIRCUIT SOT6

593660000

MAX4078EUD+

MAX4078EUD+

Maxim Integrated

IC OPAMP GP 4 CIRCUIT 14TSSOP

192

MAX4076EUK+T

MAX4076EUK+T

Maxim Integrated

IC OPAMP GP 1 CIRCUIT SOT23-5

75007500

MAX4204EUA+

MAX4204EUA+

Maxim Integrated

IC BUFFER 2 CIRCUIT 8UMAX

6

MAX4172EUA+T

MAX4172EUA+T

Maxim Integrated

IC CURR SENSE 1 CIRCUIT 8UMAX

1422

MAX9626ATC+T

MAX9626ATC+T

Maxim Integrated

IC OPAMP DIFF 1 CIRCUIT 12QFN

0

MAX9634HERS+T

MAX9634HERS+T

Maxim Integrated

IC CURR SENSE 1 CIRCUIT 4UCSP

1863

MAX4081FASA+T

MAX4081FASA+T

Maxim Integrated

IC CURR SENSE 1 CIRCUIT 8SOIC

1848

MAX4372FESA+

MAX4372FESA+

Maxim Integrated

IC CURR SENSE 1 CIRCUIT 8SOIC

59665400

MAX4123EUA+T

MAX4123EUA+T

Maxim Integrated

IC OPAMP GP 1 CIRCUIT 8UMAX

0

ICL7612DESA+T

ICL7612DESA+T

Maxim Integrated

IC OPAMP GP 1 CIRCUIT 8SOIC

25000

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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