Linear - Amplifiers - Instrumentation, OP Amps, Buffer Amps

Image Part Number Description / PDF Quantity Rfq
MAX9618AXA+T

MAX9618AXA+T

Maxim Integrated

IC OPAMP ZERO-DRIFT 2CIRC SC70-8

245812500

MAX4080TASA+T

MAX4080TASA+T

Maxim Integrated

IC CURR SENSE 1 CIRCUIT 8SOIC

17670

MAX3798ETJ+T

MAX3798ETJ+T

Maxim Integrated

IC OPAMP LIMITING 1 CIRC 32TQFN

25002500

MAX4495ASD+

MAX4495ASD+

Maxim Integrated

IC OPAMP GP 4 CIRCUIT 14SOIC

10727500

MAX4104ESA+T

MAX4104ESA+T

Maxim Integrated

IC OPAMP VFB 1 CIRCUIT 8SOIC

2500

MAX4215ESA+T

MAX4215ESA+T

Maxim Integrated

IC BUFFER 1 CIRCUIT 8SOIC

0

MAX4492AUD+T

MAX4492AUD+T

Maxim Integrated

IC OPAMP GP 4 CIRCUIT 14TSSOP

0

MAX9945AUA+

MAX9945AUA+

Maxim Integrated

IC OPAMP GP 1 CIRCUIT 8UMAX

5811500

MAX410BCSA+T

MAX410BCSA+T

Maxim Integrated

IC OPAMP GP 1 CIRCUIT 8SOIC

0

MAX44284HAWT+T

MAX44284HAWT+T

Maxim Integrated

IC CURR SENSE 1 CIRCUIT 6WLP

0

MAX4122EUK+T

MAX4122EUK+T

Maxim Integrated

IC OPAMP GP 1 CIRCUIT SOT23-5

1011

MAX4304ESA+T

MAX4304ESA+T

Maxim Integrated

IC OPAMP VFB 1 CIRCUIT 8SOIC

7500

MAX4377FASA+T

MAX4377FASA+T

Maxim Integrated

IC CURR SENSE 2 CIRCUIT 8SOIC

0

MAX406BCSA+T

MAX406BCSA+T

Maxim Integrated

IC OPAMP GP 1 CIRCUIT 8SOIC

0

ICL7641ECPD+

ICL7641ECPD+

Maxim Integrated

IC OPAMP GP 4 CIRCUIT 14DIP

662025

MAX4376HASA+

MAX4376HASA+

Maxim Integrated

IC CURR SENSE 1 CIRCUIT 8SOIC

218

MAX4018EEE+T

MAX4018EEE+T

Maxim Integrated

IC OPAMP VFB 3 CIRCUIT 16QSOP

0

MAX4436EUA+

MAX4436EUA+

Maxim Integrated

IC OPAMP VFB 2 CIRCUIT 8UMAX

10600

MAX9938TEBS+TG45

MAX9938TEBS+TG45

Maxim Integrated

IC CURR SENSE 1 CIRCUIT 4UCSP

0

ICL7621DCSA+T

ICL7621DCSA+T

Maxim Integrated

IC OPAMP GP 2 CIRCUIT 8SOIC

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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