Linear - Amplifiers - Instrumentation, OP Amps, Buffer Amps

Image Part Number Description / PDF Quantity Rfq
TLC072IDGN

TLC072IDGN

Texas Instruments

IC OPAMP GP 2 CIRCUIT 8MSOP

320

OPA355UAG4

OPA355UAG4

Texas Instruments

IC CMOS 1 CIRCUIT 8SOIC

0

INA330AIDGST

INA330AIDGST

Texas Instruments

IC OPAMP GP 1 CIRCUIT 10VSSOP

465

TLC271AIP

TLC271AIP

Texas Instruments

TLC271A PROGRAMMABLE LOW-POWER O

13915

TLV2370ID

TLV2370ID

Texas Instruments

IC OPAMP GP 1 CIRCUIT 8SOIC

225

INA290A5QDCKRQ1

INA290A5QDCKRQ1

Texas Instruments

AEC-Q100, 2.7-V TO 120-V, 1.1-MH

3000

OPA188AIDGKR

OPA188AIDGKR

Texas Instruments

IC OPAMP ZERO-DRIFT 1CIRC 8VSSOP

0

INA240A3D

INA240A3D

Texas Instruments

IC CURR SENSE 1 CIRCUIT 8SOIC

0

TLV2334IPWR

TLV2334IPWR

Texas Instruments

TLV2334 QUAD LOW-VOLTAGE LOW-POW

8000

TLV2461AQPWRG4Q1

TLV2461AQPWRG4Q1

Texas Instruments

TLV2461A-Q1 SINGLE 6.4MHZ AUTOMO

26088

TLC2652MLB

TLC2652MLB

Texas Instruments

OPERATIONAL AMPLIFIER

582

VCA810ID

VCA810ID

Texas Instruments

IC OPAMP VGA 1 CIRCUIT 8SOIC

1223

INA111BP

INA111BP

Texas Instruments

IC INST AMP 1 CIRCUIT 8DIP

125

TLV2462IDR

TLV2462IDR

Texas Instruments

IC OPAMP GP 2 CIRCUIT 8SOIC

2962

OPA4348AID

OPA4348AID

Texas Instruments

IC OPAMP GP 4 CIRCUIT 14SOIC

874

INA2181A4IDSQR

INA2181A4IDSQR

Texas Instruments

26V, DUAL CHANNEL, BI-DIRECTIONA

3000

OPA2695IRGTT

OPA2695IRGTT

Texas Instruments

IC OPAMP CFA 2 CIRCUIT 16QFN

0

TLC272AID

TLC272AID

Texas Instruments

IC OPAMP GP 2 CIRCUIT 8SOIC

108

TLC2254AQDRG4

TLC2254AQDRG4

Texas Instruments

IC OPAMP GP 4 CIRCUIT 14SOIC

0

LMP8640HVMKE-F/NOPB

LMP8640HVMKE-F/NOPB

Texas Instruments

IC CURR SENSE 1 CIRCUIT TSOT23-6

1805

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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