Linear - Amplifiers - Instrumentation, OP Amps, Buffer Amps

Image Part Number Description / PDF Quantity Rfq
AMC1200BDWVR

AMC1200BDWVR

Texas Instruments

IC OPAMP ISOLATION 1 CIRC 8SOIC

442

LM2904VQDRG4Q1

LM2904VQDRG4Q1

Texas Instruments

IC OPAMP GP 2 CIRCUIT 8SOIC

61

LPV358MMX/NOPB

LPV358MMX/NOPB

Texas Instruments

IC OPAMP GP 2 CIRCUIT 8VSSOP

4533

TL971ID

TL971ID

Texas Instruments

IC OPAMP GP 1 CIRCUIT 8SOIC

99

LMV324IPWRE4

LMV324IPWRE4

Texas Instruments

IC OPAMP GP 4 CIRCUIT 14TSSOP

0

THS4042CDR

THS4042CDR

Texas Instruments

IC VOLTAGE FEEDBACK 2 CIRC 8SOIC

1794

OPA322AQDBVRQ1

OPA322AQDBVRQ1

Texas Instruments

IC OPAMP GP 1 CIRCUIT SOT23-5

4443

TL082CDE4

TL082CDE4

Texas Instruments

TL082 DUAL HIGH SLEW RATE JFET-I

3150

THS4500IDGNR

THS4500IDGNR

Texas Instruments

IC OPAMP DIFF 1 CIRCUIT 8MSOP

0

TL032CP

TL032CP

Texas Instruments

IC OPAMP JFET 2 CIRCUIT 8DIP

1503

LPC660IM/NOPB

LPC660IM/NOPB

Texas Instruments

IC OPAMP GP 4 CIRCUIT 14SOIC

606

OPA640P

OPA640P

Texas Instruments

IC VOLTAGE FEEDBACK 1 CIRC 8DIP

2096

TLC072CP

TLC072CP

Texas Instruments

IC OPAMP GP 2 CIRCUIT 8DIP

257

OPA322SAIDBVR

OPA322SAIDBVR

Texas Instruments

IC OPAMP GP 1 CIRCUIT SOT23-6

1632

INA2128UG4

INA2128UG4

Texas Instruments

IC INST AMP 2 CIRCUIT 16SOIC

0

LMP7721MAX/NOPB

LMP7721MAX/NOPB

Texas Instruments

OPERATIONAL AMPLIFIER, 1 FUNC, 1

9285

TLE2021MP

TLE2021MP

Texas Instruments

OPERATIONAL AMPLIFIER

1141

OPA2347YEDR

OPA2347YEDR

Texas Instruments

IC GP OPAMP 2 CIRCUIT 8DSBGA

2965

TLV2254AQDRQ1

TLV2254AQDRQ1

Texas Instruments

TLV2254A-Q1 AUTOMOTIVE ADVANCED

1546

OPA2347EA/250

OPA2347EA/250

Texas Instruments

IC OPAMP GP 2 CIRCUIT SOT23-8

1950

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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