Linear - Amplifiers - Instrumentation, OP Amps, Buffer Amps

Image Part Number Description / PDF Quantity Rfq
MAX4220EEE+T

MAX4220EEE+T

Maxim Integrated

IC OPAMP VFB 4 CIRCUIT 16QSOP

5000

MAX4488ATT+T

MAX4488ATT+T

Maxim Integrated

IC OPAMP GP 1 CIRCUIT 6TDFN

12552500

MAX9634WEUK+T

MAX9634WEUK+T

Maxim Integrated

IC CURR SENSE 1 CIRCUIT SOT23-5

2396

MAX4434ESA+T

MAX4434ESA+T

Maxim Integrated

IC OPAMP VFB 1 CIRCUIT 8SOIC

0

MAX34406FETG+

MAX34406FETG+

Maxim Integrated

IC CURR SENSE 4 CIRCUIT 24QFN

983

MAX4472EUD+T

MAX4472EUD+T

Maxim Integrated

IC OPAMP GP 4 CIRCUIT 14TSSOP

0

MAX4206ETE+

MAX4206ETE+

Maxim Integrated

IC OPAMP LOGARITHMIC 1CIRC 16QFN

0

MAX4256ESA+

MAX4256ESA+

Maxim Integrated

IC OPAMP GP 1 CIRCUIT 8SOIC

4

MAX40007AUT+T

MAX40007AUT+T

Maxim Integrated

IC CMOS 1 CIRCUIT SOT23-6

22500

MAX44286HAZS+T

MAX44286HAZS+T

Maxim Integrated

IC CURR SENSE 1 CIRCUIT 4WLP

37500

MAX4330EUK+T

MAX4330EUK+T

Maxim Integrated

IC OPAMP GP 1 CIRCUIT SOT23-5

2052

MAX4289ESA+T

MAX4289ESA+T

Maxim Integrated

IC OPAMP GP 1 CIRCUIT 8SOIC

0

MAX9916EKA+T

MAX9916EKA+T

Maxim Integrated

IC OPAMP GP 2 CIRCUIT SOT23-8

19730

MAX4378TAUD+

MAX4378TAUD+

Maxim Integrated

IC CURR SENSE 4 CIRCUIT 14TSSOP

6055760

MAX4236AESA+

MAX4236AESA+

Maxim Integrated

IC OPAMP GP 1 CIRCUIT 8SOIC

50183100

MAX4382EUD+

MAX4382EUD+

Maxim Integrated

IC OPAMP VFB 3 CIRCUIT 14TSSOP

1757200

MAX4198EUA+T

MAX4198EUA+T

Maxim Integrated

IC OPAMP DIFF 1 CIRCUIT 8UMAX

1952

MAX406ACSA+

MAX406ACSA+

Maxim Integrated

IC OPAMP GP 1 CIRCUIT 8SOIC

1962400

MAX4381EUB+T

MAX4381EUB+T

Maxim Integrated

IC OPAMP VFB 2 CIRCUIT 10UMAX

0

MAX4173FESA+

MAX4173FESA+

Maxim Integrated

IC CURR SENSE 1 CIRCUIT 8SOIC

551

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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