Linear - Amplifiers - Instrumentation, OP Amps, Buffer Amps

Image Part Number Description / PDF Quantity Rfq
TL064IDR

TL064IDR

Texas Instruments

IC OPAMP JFET 4 CIRCUIT 14SOIC

34438

INA117KUG4

INA117KUG4

Texas Instruments

IC OPAMP DIFF 1 CIRCUIT 8SOIC

0

TLC073IN

TLC073IN

Texas Instruments

TLC073 DUAL WIDE-BANDWIDTH HIGH-

33500

OPA4342UA

OPA4342UA

Texas Instruments

IC OPAMP GP 4 CIRCUIT 14SOIC

831

LPV321DBVR

LPV321DBVR

Texas Instruments

IC GP OPAMP 1 CIRCUIT SOT23-5

2187

OPA1652AIDRGT

OPA1652AIDRGT

Texas Instruments

IC AUDIO 2 CIRCUIT 8SON

162

OPA341NA/250

OPA341NA/250

Texas Instruments

IC OPAMP GP 1 CIRCUIT SOT23-6

2578

LMP8278QMME/NOPB

LMP8278QMME/NOPB

Texas Instruments

IC CURR SENSE 1 CIRCUIT 8VSSOP

0

5962-9321604QHA

5962-9321604QHA

Texas Instruments

TLE2142AM HIGH SPEED HIGH DRIVE

66

INA293B5QDBVRQ1

INA293B5QDBVRQ1

Texas Instruments

AEC-Q100 -4-V TO 110-V, 1.3MHZ,

2998

TLC2274AQDRQ1

TLC2274AQDRQ1

Texas Instruments

TLC2274A-Q1 AUTOMOTIVE ADVANCED

6183

TLC27M7CPSR

TLC27M7CPSR

Texas Instruments

IC OPAMP GP 2 CIRCUIT 8SO

0

OPA735AIDR

OPA735AIDR

Texas Instruments

IC OPAMP ZERO-DRIFT 1 CIRC 8SOIC

0

LM2904QPWRQ1

LM2904QPWRQ1

Texas Instruments

LM2904-Q1 AUTOMOTIVE CATALOG DUA

0

THS4521SHKQ

THS4521SHKQ

Texas Instruments

THS4521-HT HIGH TEMPERATURE, VER

0

TLC085AIDR

TLC085AIDR

Texas Instruments

TLC085A QUAD 16V, 10MHZ, IMPROVE

19942

TLV2780CDBVR

TLV2780CDBVR

Texas Instruments

IC OPAMP GP 1 CIRCUIT SOT23-6

0

LMP2232BMME/NOPB

LMP2232BMME/NOPB

Texas Instruments

IC OPAMP GP 2 CIRCUIT 8VSSOP

81

INA293A1QDBVRQ1

INA293A1QDBVRQ1

Texas Instruments

AEC-Q100 -4-V TO 110-V, 1.3MHZ,

3862

TLV2452CDGK

TLV2452CDGK

Texas Instruments

TLV2452 DUAL MICROPOWER RAIL-TO-

68480

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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