Linear - Amplifiers - Instrumentation, OP Amps, Buffer Amps

Image Part Number Description / PDF Quantity Rfq
OPA691IDG4

OPA691IDG4

Texas Instruments

IC OPAMP CFA 1 CIRCUIT 8SOIC

0

INA253A1IPW

INA253A1IPW

Texas Instruments

IC CURR SENSE 1 CIRCUIT 20TSSOP

149

OPA703NA/250G4

OPA703NA/250G4

Texas Instruments

IC OPAMP GP 1 CIRCUIT SOT23-5

0

TLV274QDRG4Q1

TLV274QDRG4Q1

Texas Instruments

TLV274-Q1 QUAD AUTOMOTIVE 16V, 3

2200

TLV2374QPWRDL

TLV2374QPWRDL

Texas Instruments

OPAMP

0

TLV2444AQPWRQ1

TLV2444AQPWRQ1

Texas Instruments

TLV2444A-Q1 AUTOMOTIVE ADVANCED

4794

TLV2773IDGS

TLV2773IDGS

Texas Instruments

IC GP OPAMP 2 CIRCUIT 10VSSOP

12144

OPA177GPG4

OPA177GPG4

Texas Instruments

IC OPAMP GP 1 CIRCUIT 8DIP

0

TLV9002IDSGR

TLV9002IDSGR

Texas Instruments

IC OPAMP GP 2 CIRCUIT 8WSON

0

TLC274MD

TLC274MD

Texas Instruments

IC OPAMP GP 4 CIRCUIT 14SOIC

211

TLV6001QDCKRQ1

TLV6001QDCKRQ1

Texas Instruments

IC OPAMP GP 1 CIRCUIT SC70-5

251

TL972IDGKR

TL972IDGKR

Texas Instruments

IC OPAMP GP 2 CIRCUIT 8VSSOP

409

THS4012ID

THS4012ID

Texas Instruments

IC OPAMP VFB 2 CIRCUIT 8SOIC

160

TLV2313IDR

TLV2313IDR

Texas Instruments

IC OPAMP GP 2 CIRCUIT 8SOIC

2038

TL034ACDR

TL034ACDR

Texas Instruments

IC OPAMP JFET 4 CIRCUIT 14SOIC

556

TL070ACD

TL070ACD

Texas Instruments

OPERATIONAL AMPLIFIER

0

TLC27M2BCDG4

TLC27M2BCDG4

Texas Instruments

IC OPAMP GP 2 CIRCUIT 8SOIC

0

INA122PA

INA122PA

Texas Instruments

IC INST AMP 1 CIRCUIT 8DIP

2076250

OPA843IDBVT

OPA843IDBVT

Texas Instruments

IC OPAMP VFB 1 CIRCUIT SOT23-5

989

TL054CDR

TL054CDR

Texas Instruments

TL054 QUAD ENHANCED JFET PRECISI

190975

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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