Linear - Amplifiers - Instrumentation, OP Amps, Buffer Amps

Image Part Number Description / PDF Quantity Rfq
OPA4340UA

OPA4340UA

Texas Instruments

IC OPAMP GP 4 CIRCUIT 14SOIC

136810000

TL071CDE4

TL071CDE4

Texas Instruments

IC OPAMP JFET 1 CIRCUIT 8SOIC

3000

TLE2022ID

TLE2022ID

Texas Instruments

IC OPAMP GP 2 CIRCUIT 8SOIC

270

OPA3691IDBQT

OPA3691IDBQT

Texas Instruments

IC OPAMP CFA 3 CIRCUIT 16SSOP

7864250

LMP7717MFX/NOPB

LMP7717MFX/NOPB

Texas Instruments

IC OPAMP GP 1 CIRCUIT SOT23-5

121

TLC075IPWP

TLC075IPWP

Texas Instruments

TLC075 QUAD WIDE-BANDWIDTH HIGH-

2520

OPA4353UA

OPA4353UA

Texas Instruments

IC OPAMP GP 4 CIRCUIT 14SOIC

214

TLV2731IDBVTG4

TLV2731IDBVTG4

Texas Instruments

IC OPAMP GP 1 CIRCUIT SOT23-5

0

INA281A2IDBVT

INA281A2IDBVT

Texas Instruments

-4 TO 100-V, 1-MHZCURRENT

880

INA2126E/2K5

INA2126E/2K5

Texas Instruments

INA2126 MICROPOWER INSTRUMENTATI

7800

TLC075IN

TLC075IN

Texas Instruments

IC GP OPAMP 4 CIRCUIT 16DIP

17900

OPA2350UA

OPA2350UA

Texas Instruments

IC OPAMP GP 2 CIRCUIT 8SOIC

858

TLV2374MDREP

TLV2374MDREP

Texas Instruments

IC OPAMP GP 4 CIRCUIT 14SOIC

3504

LMV932IDGKR

LMV932IDGKR

Texas Instruments

IC GP OPAMP 2 CIRCUIT 8VSSOP

82574

TL074IDE4

TL074IDE4

Texas Instruments

IC OPAMP JFET 4 CIRCUIT 14SOIC

0

TLE2021AQDRQ1

TLE2021AQDRQ1

Texas Instruments

IC OPAMP GP 1 CIRCUIT 8SOIC

0

TLC075AIN

TLC075AIN

Texas Instruments

TLC075A QUAD WIDE-BANDWIDTH HIGH

13150

OPA2322SAIDGST

OPA2322SAIDGST

Texas Instruments

IC OPAMP GP 2 CIRCUIT 10VSSOP

250

LMC6494BEMX/NOPB

LMC6494BEMX/NOPB

Texas Instruments

IC OPAMP GP 4 CIRCUIT 14SOIC

0

TLV2772QPW

TLV2772QPW

Texas Instruments

TLV2772 DUAL 2.7-V HIGH SLEW RAT

39100

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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