Linear - Amplifiers - Instrumentation, OP Amps, Buffer Amps

Image Part Number Description / PDF Quantity Rfq
TL074BCN

TL074BCN

Texas Instruments

IC OPAMP JFET 4 CIRCUIT 14DIP

142410000

LM318N/NOPB

LM318N/NOPB

Texas Instruments

IC OPAMP GP 1 CIRCUIT 8DIP

670

TLE2022CPG4

TLE2022CPG4

Texas Instruments

IC OPAMP GP 2 CIRCUIT 8DIP

0

OPA1678IDRGR

OPA1678IDRGR

Texas Instruments

IC AUDIO 2 CIRCUIT 8SON

1291

OPA2131UJ

OPA2131UJ

Texas Instruments

IC OPAMP GP 2 CIRCUIT 8SOIC

632

THS3092DDAG3

THS3092DDAG3

Texas Instruments

IC OPAMP CFA 2 CIRCUIT 8SOPWRPAD

10789975

INA128UA

INA128UA

Texas Instruments

IC INST AMP 1 CIRCUIT 8SOIC

113

LT1014DDWR

LT1014DDWR

Texas Instruments

IC OPAMP GP 4 CIRCUIT 16SOIC

5122

OPA2107AU/2K5

OPA2107AU/2K5

Texas Instruments

IC OPAMP GP 2 CIRCUIT 8SOIC

0

TLV9351IDBVR

TLV9351IDBVR

Texas Instruments

OPAMP

2401

TLC27L2ACPSG4

TLC27L2ACPSG4

Texas Instruments

IC OPAMP GP 2 CIRCUIT 8SO

0

OPA548FKTWTG3

OPA548FKTWTG3

Texas Instruments

IC OPAMP POWER 1 CIRCUIT DDPAK

23910000

TLE2142IDRG4

TLE2142IDRG4

Texas Instruments

IC OPAMP GP 2 CIRCUIT 8SOIC

0

TLE2064AMDR

TLE2064AMDR

Texas Instruments

TLE2064AM-D JFET-INPUT IMPROVED

4575

LM833P

LM833P

Texas Instruments

IC AUDIO 2 CIRCUIT 8DIP

1829

THS3111IDR

THS3111IDR

Texas Instruments

THS3111 SINGLE, LOW NOISE, HIGH

7202

TLC277IDG4

TLC277IDG4

Texas Instruments

IC OPAMP GP 2 CIRCUIT 8SOIC

0

LT1037CL

LT1037CL

Texas Instruments

OPERATIONAL AMPLIFIER

451

OPA2354AIDDARG3

OPA2354AIDDARG3

Texas Instruments

IC OPAMP VFB 2 CIRCUIT 8SOPWRPAD

0

RC4558IP

RC4558IP

Texas Instruments

IC OPAMP GP 2 CIRCUIT 8DIP

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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