Linear - Amplifiers - Instrumentation, OP Amps, Buffer Amps

Image Part Number Description / PDF Quantity Rfq
OPA378AIDCKT

OPA378AIDCKT

Texas Instruments

IC OPAMP ZERO-DRIFT 1CIRC SC70-5

18842

LMV324M-TI

LMV324M-TI

Texas Instruments

IC GP OPAMP 4 CIRCUIT 14SOIC

60500

TLV2711CDBV

TLV2711CDBV

Texas Instruments

OPERATIONAL AMPLIFIER

0

TLV2242IDGK

TLV2242IDGK

Texas Instruments

TLV2242 DUAL MICROPOWER, 2.5-V,

20796

LMH6619QMAKE/NOPB

LMH6619QMAKE/NOPB

Texas Instruments

IC OPAMP VFB 2 CIRCUIT 8SOIC

161

OPA363AID

OPA363AID

Texas Instruments

OPA363 1.8V, HIGH CMR, RRIO OP A

58256

VCA2612Y/250

VCA2612Y/250

Texas Instruments

IC OPAMP VGA 2 CIRCUIT 48TQFP

0

TLC2652C-8DR

TLC2652C-8DR

Texas Instruments

TLC2652 PRECISION CHOPPER-STABIL

7637

TLV197QDGKRQ1

TLV197QDGKRQ1

Texas Instruments

AUTOMOTIVE, SINGLE CHANNEL, HIGH

2196

TLV2221CDBVRG4

TLV2221CDBVRG4

Texas Instruments

IC OPAMP GP 1 CIRCUIT SOT23-5

0

UC3176QP

UC3176QP

Texas Instruments

IC POWER AMP 2 CIRCUIT 28PLCC

1935

LM346M/NOPB-TI

LM346M/NOPB-TI

Texas Instruments

IC GP OPAMP 4 CIRCUIT 16SOIC

0

LT1013DP

LT1013DP

Texas Instruments

IC OPAMP GP 2 CIRCUIT 8DIP

2370

OPA189IDBVT

OPA189IDBVT

Texas Instruments

IC OPAMP ZER-DRIFT 1CIRC SOT23-5

20755750

THS4222DGNR

THS4222DGNR

Texas Instruments

THS4222 LOW-DISTORTION HIGH-SPEE

10025

LM7171BIM/NOPB

LM7171BIM/NOPB

Texas Instruments

IC OPAMP VFB 1 CIRCUIT 8SOIC

387

OPA2180IDGK

OPA2180IDGK

Texas Instruments

IC OPAMP ZERO-DRIFT 2CIRC 8VSSOP

2

TLV6741DCKR

TLV6741DCKR

Texas Instruments

IC CMOS 1 CIRCUIT SC70-5

10302

MC3303N

MC3303N

Texas Instruments

IC OPAMP GP 4 CIRCUIT 14DIP

577

OPA990IDBVR

OPA990IDBVR

Texas Instruments

IC OPAMP GP 1 CIRCUIT SOT23-5

9562

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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